Big Power Jeep Straight Six Stroker Build on a Budget with Newcomer Racing

[@BucksSuperStereoWorld]

This thing is a monster of a straight six. It made 329.5 lb ft of torque and 304 HP! That's small block power out of a NA inline six that's smooth as silk!

[@TheHorsepowerMonster]

You got it. A five-grand redline isn't exactly sexy, but it is practical on a off-road engine where you want to maximize low-end torque anyway. Plus, like I'm sure you noticed, the builder was trying to get good power on a real-world build. This engine is going to be used everyday, and longevity is definitely an issue. Lightweight stock springs minimize wear on the cam lobes and lifters, but they don't exactly help stretch the redline to the moon. Thanks for watching!

[@Welcometofacsistube]

GT3582R LSVTEC EJ8 First. Rpm is directly related to airflow. This is an older bigger ci engine. It doesn’t need to rev to 10k rpm to make any power like crappy 4 bangers Second; stroker motors don’t help an increase in rpm. If anything the inhibit rpm. Thirdly; this particular type of build isn’t for a race car. It’s built for torque. The more torque at a lower rpm is more useable power. Reving the shit out of an engine is always the goal of a build.

[@BucksSuperStereoWorld]

I had to edit my original post because I jumped the gun on what I said and didn't think about the 4.0s of the past. I made a comment about the 5000 rpm redline, but I didn't take into account the fact that the 4.0s don't need to rev high due to their ability to make torque. I've driven quite a few Cherokees and Wranglers with the 4.0 and even some AMCs with the 4.2 and they were always extremely reliable, extremely smooth, and they always produced alot more torque than people gave them credit for. Besides, in an offroad based vehicle, you don't need high revving capability, you go with an engine that makes good torque down low, which is why so many people love the 4.0 and is also why you hardly ever see a Jeep stuck. This option being available to the Jeep community who stick by their beloved 4.0 just makes it that much better. Once again, I let my mouth run before I saw the dyno numbers...it's hard to argue with horsepower and torque!

[@TheHorsepowerMonster]

That's cool. It's always good to read comments that understand different engines serve different purposes, not some keyboard warrior yelling that if an engine doesn't have twin turbos and make 1,500 horsepower it's junk! Thanks again.

[@BucksSuperStereoWorld]

@@Welcometofacsistube You're right, I am an import guy who has a 612 whp Civic coupe and ran my mouth before I took into consideration what this engine will be used for. My turbo 1.8L DOHC 4 cylinder revs to 10k rpm because it was balanced and built to make power that high, but my Civic is a drag car, not an offroad capable vehicle. That being said, this Civic is my 54th vehicle since I was a kid, and the other 53 were a mix of imports and domestics which included cars like a 800 HP 74 Camaro Z28 that my brother now owns, a 70 Buick Skylark GS, a 69 Roadrunner 383 4 speed car, a 70 Charger that I built a high compression 440 with a 4 speed for, but I've also owned Eclipses, Eagle Talons, a turbo 92 Acura Integra that made 412 whp, and even an AWD swapped 92 Plymouth Colt hatchback that I swapped a fully built 4g63t into that made 500 whp and would destroy Corvettes. I've always been a fan of a good build, but more importantly I've always been a fan of the underdog, and it doesn't get much more underdog than a lowly common Honda Civic. All in all, I just like horsepower and going fast on or offroad.

[@xtal567]

What is sad, is one day guys like this will go the same way guys that rewound starters and alternators did. Their knowledge will be lost like the knowledge about steam and old Iron. Such passion.

[@lifetimeofwork]

To be replaced by people with equal passion for the technologies that replace the ice.

[@keatonrink8446]

The last of the Mohicans as my co worker would say

[@PaulSter]

I completely agree.

[@PaulSter]

@@lifetimeofwork boring. I don't care about the numbers either. Building ICE is an experience. It's visceral. It's primative, albeit with the new EFI and ignitions if one so chooses. Friend of mine bought a crate SB Chevy 383 stocker. 480hp per dyno. The smells, the sounds, the challenges. Electro dudes just don't, or won't get it.

[@supie5063]

It's already happening.

[@socialghost4400]

Finally someone giving some credit to the excellent Jeep straight-six engine 👍 ...subscribed

[@ericduncan7421]

The best motor ever made. Can’t beat them.

[@TheSchmed]

The best Jeep motor ever, better than the “panty” Star. I’ve seen some that were literally a “block of rust”, with 200K miles, still going strong. So easy to work on, everything reachable for a driveway mechanic. Gotta say though, do love the cartridge filters on the 3.6 Pentastar motors.

[@clutch4141]

One of the best motors ever built

[@jeepmanxj]

The problem with the amc i6 is over it's life it had been great and crap. So to have the really good ones you've got to hodgepodge them together over multiple generations.

[@codyshowalter7128]

Literally one of my favorite engines next to fords last desirable gas 300 straigh six

[@rayceeya8659]

That engine is one of the toughest ever designed. Honestly, anytime you see a straight 6 with 7 mains, you know the bottom end is bulletproof. These make for great daily driver engines that you can have some fun with on the weekend too.

[@trumanhw]

Not to mention, the Cherokee is the ultimate utility vehicle. About the smallest turning radius, unlikely to get stolen (even in areas with a lot of dem teeeeeens), good interior space, and is still masculine looking. My absolute favorite car. I've owned at least 4 of them and I'm looking at getting another!!

[@chevydyall7619]

Don't worry bout 1000hp LS builds. This is why I love this channel. So much different stuff. Keep up the awesome work

[@TheHorsepowerMonster]

Thanks!

[@geoffmooregm]

I feel the same. I love the odd stuff. The reason I stopped paying for magazine subscriptions was because all you ever saw was cookie cutter builds with V8's from the big 3. I want to see the odd stuff like some V6's, I6's rare V8's and even some old I4's like the Superduty 4.

[@vee950]

Yes everyone is LS ing everything its getting old

[@donaldleavy4379]

Chevy Dyall maybe you could weld an LS Block to the right side Of This Block. & Call It An Ls Conversation L6

[@fobbitoperator3620]

Looking forward to seeing that high rpm head build. Imagine this I-6 with 7k-8k rpm capabilities. BRUTAL!!!

[@rbotton6272]

the Jeep 4.0 in itself is a great inline six design....but adding a stroker crank kit for 4.6 liter displacement really opens up the torque,horsepower numbers!!

[@luisVAZQUEZ-hp4gc]

Which one it’s better 4.0 strokes 6 or stroke 7

[@trumanhw]

Honestly, the stock torque isn't bad ... acceleration is decent up to about 45 mph. It's above 55 that it becomes a brick. But this would be awesome! imo, I think it needed horsepower more than it needed torque (yes, I know how it's calculated and they are fn of each other). Thus, this is one of the only ways I've seen that does create that torque bc valve float precludes higher RPM and you need more torque at the upper end to get the HP.

[@grad0n]

My 10 y/o 4.6 stroker ate the cam this summer. I definitely will build another!

[@dieseldemon8562]

Very nice! Rest in pieces Dana 30...

[@bengarcia1091]

I just dropped a brand new 4.0 in an XJ I built and that's exactly why I didn't do a stroker! I almost did but then started to think about everything I would end up braking behind it and said nevermind. Not to mention I got a long block with a warranty for 1600 bucks! So for 5 grand no thanks.

[@TopDedCenter]

I would love to see a part 2 where they outfit the motor with the suggested 24#/hr injectors, larger fuel pump and anything else suggested to meet these numbers. (like a larger diameter throttle body, and doing a dyno pull on stock computer vs tuned computer)

[@BarnBear]

One of The Best tutorial-type videos that I’ve ever seen.

[@TheHorsepowerMonster]

Thanks a lot! And thanks for watching!

[@arthurdombroskie3083]

That's very respectable power out of that engine.

[@UncleSpuddy]

I'm honestly flabbergasted it made over 300hp. Expecting budget build numbers of like 250-270hp at best.

[@TheHorsepowerMonster]

Thanks. He does some pretty cool stuff with his engine builds.

[@headlesnorseman701]

The torque curve is what got me. This is probably a blast to drive in something with gears

[@bradmetcalf5333]

I remember wanting to do shit like this as a teen and being broke as hell. Now I'm grown with a good job and dont even know where to begin. Thanks for this video. It was awesome.

[@kennethbrown5784]

I love inline 6 builds keep them coming

[@TheHorsepowerMonster]

Very soon hope to follow up with a seriously big horsepower turbo six build. Should be fun. Thanks for watching!

[@MrRandomcommentguy]

Love the smoothness of a straight 6...

[@meadows408]

Now I wish I had one of my old Jeeps back, the 4.0 with a 5 speed, two wheel drive was a sleeper. I used to give kids driving small beemers fits going stop light to stop light.

[@nunyabizness199]

They don't like that very much...😂

[@mgxmaddguiness7066]

I still drive my almost 27 year old TJ I bought new. It now has a header and dynomax super turbo muffler. It loves to be run and shifted. Pure delight.

[@BigRig003]

Very respectable numbers. Makes me think of the old days when Hudson hornet only used straight 6s. Very badass

[@johnderekmitchell1510]

And walked all over everything else.

[@BigRig003]

@@johnderekmitchell1510 pretty much.

[@wowchad]

All big semi diesel engines too😎

[@manitoublack]

More great content. And great to see some non-V8 American content. Let's see that turbo build👍

[@omegarugal9283]

the 4.0 is all american

[@manitoublack]

@@omegarugal9283 grammer error on my part. Only the Americans were making iron on iron motors in the 90's🙄. Meant to read. "Non-V8," American motors.

[@paultavres9830]

Check out LS V8 to V6 conversion

[@TheHorsepowerMonster]

Racing

[@manitoublack]

@@TheHorsepowerMonster it's a novel, yet unconventional solution to a very specific problem. Arising from a rather unique set of circumstances 👍.

[@kansaigarage6696]

Best 4.0 videos on the internet. Keith is a beast!! So much motivation and innovation by him

[@murderdoggg]

You have to love it when a stroker motor is still over square.

[@VinnyMartello]

Stock Buick V8 is under square haha. With a 350 Buick you need to bore it 60 over in order for it to be over square. I have a 350 Buick in my 66 C10 and it pulls trailers like a champion.

[@maccliff2115]

I had a 2002 Grand Cherokee Laredo 4x4 4.0L six cylinder I bought it in 2006 and sold it in 2018 I drove it everyday. It was a trooper that served honorably. The engine has 170,000+ miles. Still ran fine. Everything else was slowly going out. Door locks windows, lights, brakes, tires. Needless to say I sold it. I miss it. I didn’t have the money to fix it up and breath new life into it. It will never be forgotten.

[@vwkaferman]

Makes me miss my 4.0 Jeep Cherokee. Always wanted to do a 4.6 stroker in that beast. Hell, stock out of the box with no lift, they were actually pretty quick for what they were.

[@oveidasinclair982]

We have the 4 liter straight 6 in our Jeep Cherokee, dad loves that engine, he said he was going to keep that SUV until the wheels fall off. This should be some time because he garages it every evening and we're always hitting the local U-pick salvage yards when ever a new arrival comes in, his 15 year old Jeep is almost showroom condition. Great video, really enjoyed watching it.

[@Dr.Westside]

Keep it until the wheels fall off then buy new wheels.

[@allanking6608]

I have a stoker inline 6 ,, love it . Going on 6 years now , I'm hard on it , making my 37's smoke all fours

[@aaronhuff4484]

Your not smoking all 4 of anything.....especially 37s. Not with a damn 4.6

[@Badassing]

Aaron Huff Easily can with the right gearing. Smokes all 4 of my 35s with a stock 4.0L and 5.13 gears

[@blackopsrocks]

@@Badassing yea no...not a chance. My wifes lq4 6.0 4.10s wont rip all four 33s.

[@Badassing]

Tristan Wolff Rubber in fenders show otherwise. Do a 5k neutral drop in 4L and all 4 tires will smoke. Now I’m not saying a full on burnout. It just smoked all 4 tires. There’s supercharged 2.5L Jeeps spinning all 4 tires. Even 37s.

[@blackopsrocks]

@@Badassing 5k neutral drop low range...come on man...meanwhile our 6.0 rips 60 mph rolling burnouts and gets 19mpg all day long.

[@johnbehneman1546]

LOVE IT!!!! I worked at a Jeep dealer in OC while I went to school. I have a soft spot for Jeeps. Many happy memories!!!

[@johnludtke4416]

That torque curve is pretty impressive.

[@ORflycaster]

That was my first thought. A nice, impressively flat torque curve in the 300ft/lb neighborhood. That's a very usable Jeep motor.

[@blitzroehre1807]

Dang, those AMC Jeep engines sound soo nice and smooth! This one though you can hear it getting more throaty as it pushes out the extra power. My old Cherokee nearly lulled me into sleep on a few occasions during long drives just from the lovely purr of the engine

[@matthewf2066]

that torque curve is awesome... perfect for a rock crawler!!!

[@allstar930]

Man, I'm a Jeep guy and I love this video. My dad always wanted to put one of these built Jeep motors into a classic British sportscar.

[@jeremyburleson8466]

Rovers

[@bradleytribble419]

These engines always make my hair stand up when they rev up. So powerful and awesome.

[@johneason6540]

What a torque monster. I love it when guy build straight sixes.

[@jbj27406]

It's a pleasure to watch this man work.

[@NeoVoodooTech]

I'm sad I can't watch this with my grandpa. He passed a few years back was a mechanic in the Army and he loved this engine so much he drove 1000 miles just to pick one up for his Jeep. I remember he let me take it to the store and I being 16 at the time tried to do a burnout and almost broke it. Man he would have had a blast driving one of these bad boys!

[@Al-mx6ru]

That's as much power as my 5.3v8 Chevy 04.AMC gotta love them.7mains strong.ran forever legendary l6s.

[@ALABAMAHEADHUNTER]

I own an engine machine shop here in Alabama . We do a lot of industrial engines . I have had 3 jeep engines come through that are used in the oil fields that are used to burn off unwanted gases . The first one I rebuilt came in and I assumed it was just a 4.0 liter engine because it was a 4.0 liter block . When I installed the first piston and turned the engine through the top ring came out of the cylinder . I had to order the pistons through the company that built the pump . They never would or could tell me what c.i.d. the engine had .But it had a different crank and rods than any jeep we had ever worked on before . The crank was forged steel and the rods were regular I beam rods but were very different from a factory rod . The piston looked like regular 4.0 pistons but the pin location was higher . Since then we have rebuilt 2 more of these . Always thought jeep folks would love to get a hold of one of these engines .

[@TheHorsepowerMonster]

That's crazy. I'd love to see one of those someday. Thanks for watching!

[@champslongton6018]

Finalllyyyyy someone showing love to the 4.0 :))

[@bigbird-xm]

This year I pulled the trigger in Feb/2024, I order a turbo T3/T4 turbo with a 0.57-mm compressor wheel with 0.50 a/r compressor housing and 0.63 a/r turbine housing. The 4.0L Loves a good Turbo and the turbine spool-up-sound is very rewarding running up a big sand dune. Cheer's

[@clayyates6822]

This is why i own and drive an xj 95 jeep,400k on the clock but still pulls like a train..4.0!!

[@joshuanicholsjr5327]

awesome love those 6cy can't beat them they last forever have 3 jeeps now that have over 250 thousand miles on them, the 6cys of all the brands has always been the most reliable and can be built to get more power out of them then the stock motor great stuff thank you

[@carportchronicles1943]

I wish I could of had one of those back when I had my old CJ7. I never would have had to down shift to go over a mountain pass.

[@mikevonkleist6767]

Really cool seeing enthusiasm for an old school OHV straight 6.

[@bjjbrawler1]

The high-output straight six was a great engine. I owned one, so torquey!!!

[@moedigzz]

Took a 4.2L carb straight 6 shortblock and put a 4.0L efi head on it. I also used a offenhouser intake manifold, a holley 650 carb, dual valvesprings, and the biggest camshaft offered by comp cams. She's been getting beat on for over 5yrs without skipping a beat. Makes great power and torque.

[@masterps100]

moedigzz nice!!! I’m doing the same thing minus the cam, I have a quadrajet 4bbl that I was going to install but thought it might be too much carb. Any issues with your 650?

[@thetriode]

@@masterps100 old commentbut I wouldn't sweat the qj. They ran em on 4.3Ls.

[@seahorse5677]

Legendary 4L Motors, they don't build em like they used to

[@Jdalio5]

Nope and they ruined a brand because of it.

[@blackopsrocks]

No...because nobody really believes 180hp and 13mpg is a good thing.

[@davem4193]

@@blackopsrocks don't know where you came up with 13mpg. My 99 Cherokee 4.0, 5 speed averages 25 mpg and my 05 Wrangler Unlimited 4.0 automatic averages 19 mpg. That's commuting down a 2 lane road with speeds from 35 to 55 mph. Stock tires on both. 99 has 276K miles and 05 has 266K miles.

[@blackopsrocks]

@@davem4193 so...not normal normal commuting...got it. My 8300 lb diesel super duty can avg 25mpg if I do 50mph all day so my point is still valid. I like the 300 ford i6 myself but im sure not going to say its worth the cost to horsepower...as soon as you push more power, the longevity and durability (the reason we all like the 4.0) goes out the window.

[@davem4193]

@@blackopsrocks my real world figures disprove your original point so your best argument is that it's not an average commute? Got it. Define an "average" commute. Even when I was commuting down the highway in my 99 Cherokee at 80mph I was still averaging 23 mpg. Sounds like you pulled your 13mpg figure out of thin air.

[@derekheuring2984]

I wish you were around 25 years ago. I bought a used 1988 Cherokee after decades of being a CJ guy. The 188 hp of the 4.0 was a quantum leap over the 65 hp L Head and F Head just as your stroker is over the stock 4.0.

[@BigEightiesNewWave]

I had a 90 RENIX/AW4 loved it.

[@mazevx2451]

Would be super nice to see this engine working its way up the trail in a nicely built LJ

[@frankieford7668]

I did a similar build for my Jeep 20 years ago...The power was a night and day difference....Made the Jeep a blast to drive...started breaking transmissions and Axles....but it was worth it...👍

[@TheHorsepowerMonster]

Awesome!

[@frankieford7668]

@@TheHorsepowerMonster My buddy had an early 80s Z28 with a 4speed....i cleaned his clock ...light to light ...with my 84 Laredo...Porting the cylinder head and the intake manifold..with the addition of an iski 252 Super Cam had to have added 100hp to that engine...600 vac secondary with a light spring kit....It was a "Jeeper Sleeper"....Sheared the 2 piece axles more than once...before i installed a Mosure 1piece Axle kit....It was a hell of alot of Fun... Had to cut one rib of grill...to get the Cam in....🤣😂🤣 what we do for Power....👍

[@nateyoung6331]

Love that torque curve

[@Geordo1960]

Look at that smooth engine. I miss those straight sixes.

[@larrymartin8146]

Nice!!! We still have 2 Ford 300’s on the stand for a late model roundy round. Competes very well against the high dollar all aluminum V6’s. I love odd ball engines and motors that look all stock but just rip.

[@wowchad]

Look stock except for sweet exhaust plumbing 👍🏼😁😎

[@jeffsewell412]

Down here in Australia, this engine is pulled out and replaced by the 4litre DOHC Ford barra engine, its 185kw DIN on unleaded. there is a turbo version at up to 310kw. The barra was made in Australia for our falcon. The Jeep engine is old school now days.

[@juliecallaghan8592]

Ford barra motor had been compared and come out on top of a toyota 2jz..best 6 cyclinder engine to date ..and cheapppppp

[@mountainmanmcbeachfront5296]

Do you have to install it upside down

[@dodgeramman7521]

Built almost same mtr.back in 1981 but used 400 chevy rods&pistons 11:1's Cam was a moon cam 540lift.ran a offy manifold with 500cfm motorcraft carb.splitheader block was bored 125 over.4.2 head was port&polished with 2.5 valves.Ran it in a 72 gremlin dirt track no dyno back then but ran 0-60 in 5 seconds.sold that engine for a grand and guy put it in a 66 4dr.american ran 12:2 in 1/4 mile.Cost back then to build was a grand.

[@rexhavockusnavy1644]

I Believe THAT for a Fact! SWEET

[@Blakews221745]

i got myself a 284 stroker motor from a 4.0 258 crank punched .060 over basic 3 angle valve job crane cam h-260-2 on a chassis dyno, all the drive line, auto trans, transfer case, 3.55 gears, and a full front accessory, it made 250 horse and 350 tq iirc. took it mud racing after some upgrades and managed to kill it a few times, rebuilt and killed again.

[@BucksSuperStereoWorld]

I had to watch this again just to hear this engine idle...it sounds so good.

[@pattyoneill91]

Dude, these motors are great. Look here at 13:50. You have horsepower that goes up but you have INSTANT and CONSISTENT torque from like 2500 to 4500 rpm man. Just awesome. Torque on demand. They may not be the best at making power but man, I'm sure there's tons of head designs that could be experimented with if one has the money, tools, time, you know, basically all the means to do so I'm truly in love with a couple engines: The amc i6 The Chevy 454 The Cummins B series Duramax diesel V8 The power stroke V8 and the idi version before it(very underated indirect injection diesel) And finally, I'm also in love with all the recent gm V8's with the direct injection and such. I think it's so awesome we have these old pushrod designs and are literally sticking GDI in it. Incredible. It's truly a great time to be alive, so many interesting things and a golden age of tinkering ! 😍😊

[@joevald3]

It's one hell of a good build . Damn good value

[@JeepCherokeeful]

One of the best, the engine family was in production for almost 40 years;)

[@rayoliver6807]

77 YEARS FIRST DEVELOPED BY NASH IN 1947!!

[@VinnyMartello]

And that will be a very reliable 300hp. A hundred thousand miles from now it will be making 290hp.

[@MrRoughknuckles]

100,000 miles heck ya

[@thelickedspoon]

THEN YOU JUST REBUILD AGAIN!

[@anonymously-anonymity]

This is fact, i got one sitting at 100,000

[@james8518]

Don't know if I missed it but, he didn't break in the hyd. cam with that style of lifter and cam you're supposed to start up and run above 2500 rpm for I believe 20minutes(maybe they just skipped that part). he just started it up and went with a dyno pull. plus he never had the waterpump hooked up and moving water? other dyno video's I see they always have the waterpump moving the water.

[@TheHorsepowerMonster]

You are right, proper break-in with a flat tappet cam is critically important. They did that, but I didn't shoot it because breaking in an engine is important. They also use an external water pump on the dyno. The idea is to eliminate the search for a properly sized belt to turn just the water pump for every engine that goes on the dyno. Just makes life simper for the engine builder. Thanks for watching.

[@james8518]

The Horsepower Monster thanks for the reply back and the explanation. I liked your video and looked at his website. And the more I think about it the hp numbers he's getting with factory rods and crank heads is awesome. He's getting more horsepower than a competitor I just watched. And I spoke out of turn and his price is right in line including dyno, shipping etc. Actually alittle cheaper. I'll will edit my previous post.

[@critterIMHO]

That torque curve is amazing. Maybe it’s time to start searching for an old gremlin.

[@theronnking]

Nice work with the video. It takes work and time to make something like this! Kudos to the camera and editor!

[@TheHorsepowerMonster]

Thanks very much! Thanks for watching

[@modeverything1]

Nice to see that people still build and modify older engines and not just swap an LS! Lol May have missed it but what was the compression ratio?

[@dingomanz7]

Probably between 9.5 and 10. The Golen Engine Service 4.6 stroker crate engine is 9.5cr

[@TheSlayton1234]

Its under 9

[@paytonr8361]

I can tell you if you can read the casting number on those pistons

[@jasonlenihan9854]

I don’t think you would want to gamble long range if your a cj7 owner with a t5 transmission. Its a great video and very talented man though

[@michaelmyers7425]

the bone stock iL6s were torquey as is, i can't imagine how this would sit you down in a box Cherokee. I WANT ONE !

[@LokiLL999]

Wizard Mechanics are some of my most prized humans. Love this Wizard here. 🙌 Loki-LL

[@willhooke]

It's the same power and torque that a 5.7 L Gen III was putting out in 2002 in my old Holden Statesman Great build 👍 304 hp ~ 226 kw 329 ft/lb ~ 446 nm

[@jaratt85]

Currently you can find 4.0L short blocks fully refurbished for $1000.. or 1500-2k for long blocks. (I literally just looked it up) Pretty insane that those engines pumped out 190HP from the factory when most V8's were still only at 220 at that point, and in the early days (late 80's) were still only putting out 135.

[@dawabbitt3079]

190hp / 6-cylinders = 31.66hp per cylinder. 220hp / 8 cylinders = 27.50hp per cylinder. That's a difference of a mere 4 hp per cylinder. Far from insane.

[@nickstamboulis6097]

Man this video is giving me an itch. Been dying to give my xj a little extra oomph. Not really to do anything crazy. Just some weekday daily driving and weekend toying around. But I already built it up and love to have it with a little more capable power. Just not sure which route. Torn between strokering it, throwing in a tdi, or maybe even put in a turbo. But I like that sound it makes strokered.

[@tomashton1781]

How about doing a 4 banger 2.5 throttle body engine up grade for a jeep.

[@TheHorsepowerMonster]

That would be a fun one! Thanks for watching.

[@rickrichter9445]

My ‘98 XJ has 195K on it. I keep thinking when that engine goes I’ll go the stroker route-still waiting! No smoke, no oil burning, no oil leaks, fires up every time. Man those AMC engines are tough.

[@TheHorsepowerMonster]

Yes, they are famous for being tough as nails.

[@gasfiltered]

This is a cool engine. Looking at that hp curve, the extra couple hundred for good valve springs would be worth it. Can had just barely started to drop out when the valves bounced

[@onemeangreen]

Great video thanks for sharing. A few years back I wanted a stroker and bought one in Ocala Florida, thinking hey a warranty and drop in saves time, NOT! Nuff said, most jeep people have heard the horror stories by now of that place. After 200 miles and the engine being pulled three times I said forget it! My friend is a crazy great machinist well know and he helped me set everything up. We found problem after problem with the previous build. Apparently they didn't understand valve spring bind for one, that explains three wiped out cams. After porting, chamber CC and quench planning, proper cam set up, roller rocker from Harland, throttle boring, better cam specs, all the vale tricks you mentioned I could grab third gear rubber "35" tires" and was quite happy. This 5k price tag is pretty low in my book but would like to see the numbers with the factory 92 up MPI. I was thinking on another build maybe even turbo but would truly consider this option! People always cite or comment doing V8 swaps as being cheaper, once you buy most of the adapter, spend the time sourcing everything, buying a used motor and possibly rebuilding it the 4.0 stroker is a great deal. And if you like to travel in your Jeep being able to still go in a parts store and say I need a hose or belt for a 4.0 looks pretty simple. Lets not forget some states are crazy emission happy too, is that an original motor? Many V8 swaps require moving the motor forward so now add in drive shaft, radiators and so on. Yes I have been that route. Good luck to all happy Jeeping, Oh and last but not least, lets not forget how tough these motors are and the torque down low.

[@TheHorsepowerMonster]

Those are all excellent points. Glad you finally got your engine sorted out!

[@onemeangreen]

@@TheHorsepowerMonster Meant to ask, any thoughts on the aftermarket aluminum heads? Yes pricey, but cooling, weight and possibly being able to lower chamber temp so run more advanced timing?

[@TheHorsepowerMonster]

Yes, the Edelbrock head is definitely better mostly because it has a modern combustion chamber. Keith Newcomer and I hope to test a stock head and the Edelbrock back-to-back someday soon.

[@onemeangreen]

@@TheHorsepowerMonster I didn't mention by name since its proprietary wasn't sure that was cool:) I cant wait to see the results!

[@carguy1150]

Want to see a ford 300 straight 6 build

[@dan102061]

Me too

[@insolentstickleback3266]

Me three.

[@dunnebug]

👍ME 4👍

[@ssimon64]

Yeah 👍

[@christopherking2012]

The only ford engine I like. Cannot be killed. Had one traded in during cash for clunkers, bounced it off red line for a day w/o oil and coolant, damn thing still didn't die. Once it cooled down it always started back up.

[@MikeSmith-nu9wt]

You didnt have to line bore the mains to accomadate or match the block , with a different crank ?

[@TheHorsepowerMonster]

If the journals are the same, no. The only time you need to line bore the mains are if you are going bigger with the main journals or if the block has been overheated and warped.

[@knobrush]

That 4.0L makes 44 more hp and 15 more lb ft of torque than the 4.7L "High Output" V8 in my Dakota. Would love to have that engine in my Dakota!!

[@repnatl]

That HO 4.7 blows up under factory hp numbers lol

[@knobrush]

@@repnatl If I had the cash, I'd swap in the Corsair 4.7L. My HO is so weak, it's like having the 3.7L V6.

[@dingomanz7]

I had the 4.7HO in my 02 GC overland. That thing absolutely ripped and never gave me any problems. Had tons of torque from really low RPM. After a few years I added an intake and the Kolak exhaust system but suspect it made limited difference in HP/TQ.

[@knobrush]

@@dingomanz7 My HO only runs ok on 93 octane and I'm not paying 70 cents more a gallon so I just live with it. From a stand still if I mash the gas I can barely chirp the tires, and I've got the 3.92 gears. Sucks, I should have bought the regular V8.

[@dingomanz7]

@@knobrush What year is your Dakota? In my GC Overland HO I could easily tell the difference between 93 and 87 octane particularly above 3.5k RPM. I've never chirped the tires on account of Quadra Drive II being AWD. The 4.7 HO in my jeep is more powerful than the HO in the Dakota's due to different camshaft and manifold.

[@joejoe-qn4hu]

I did 4.0 head conversion which i Ported and polished port matched my Clifford intake on my 82 cj5 jeep 4.2 had 350cfm holley 2bbl an split header with 2 flowmasters. It made such a huge difference in power and torque. Everyone thought i put a v8 in it cause the sound and way it ran i could bang 2 gear and yank driver wheel.

[@TheHorsepowerMonster]

Sounds like a fun build!

[@rockymontana1]

Nice,I'm wondering if we will see this engine in a vehicle so we can see it perform...This is a nice build and look forward to more 6s being built.I wouldn't mind seeing a 90 degree 6 kick ass...

[@GLDENGLOVES]

I've been running one my friend built about 8 years ago..it's right at 300 hp in a Jeep cj5 with one ton axles

[@rockymontana1]

@@GLDENGLOVES What transfer case are you running behind them 300 ponies? That thing must be a pissa to drive.

[@markhicks9864]

i have a 95 cherokee 4.0 ho. want to build it for my son. i will keep this channel so when my rich uncle gets out of the poor farm, I'M IN.

[@dorsk84]

I want to see this done with "street legal" '02+ ECM. Cause that's what I got ...'05 TJ

[@EnfieldJoe]

My 70 El Camino came stock with a 250ci inline 6 & Powerglide. Would love to put one of these "Buzzin Half Dozens" in my Elko! At just about every car show people ask me when I'm going to swap in the LS....no way, more bragging rights with an inline!

[@deansapp4635]

Why not start the dyno at 1500 rpm ? Alot of us would like to see torque numbers from 1500 to 2500 rpms as well

[@AB-80X]

You never run the engine at wide open down there. And if you tow something that lugs your engine down that far at wide open, you need to revaluate your setup, because that's not how you use an engine.

[@TheHorsepowerMonster]

It is really hard on an engine to put in on a dyno at start a pull that low because the pull is always at wide-open throttle. So to protect the pistons and rods, most engine builders won't start a pull until at least 3,000 rpm or so. Hope that helps!

[@deansapp4635]

@@TheHorsepowerMonster Thanks !!!!!!!!!!!!!!!

[@barrygoodson4952]

Well I now know who will get my Cherokee motor when I'm ready and I'm not far from you guys at Newcomer racing. Mine has 315,000 miles on it but still running strong. I plan to keep this car so I was already looking for someone who would build the stock motor. I want to keep it with all original parts and drive train as long as it's possible. Thanks for this video just what I was looking for ! I want a real street sleeper.

[@evalpacer1396]

I'm amazed you got a 950 cfm carb to work on a 280 cube motor. What jetting did it end up using?

[@zuestoots5176]

@@noidontthinksolol Unless it uses vacuum secondaries.. Only allows what the engine uses.. Q-Jets where as big as 750cfm on a smogged out 350 yet, you could carry that Q-jet all the way to around 700hp if you knew how the carb worked. I read somewhere about some guy running a stock Q-Jet on a car running 11s in the quarter. Very efficient carbs

[@bertgrau9246]

@@zuestoots5176 That's correct, Pontiac used a Q-jet on a 250 cubic inch inline 6 put in early firebirds worked very well . The Q-jet was factory rated at 750 & 800 CFM

[@scanadaze]

Mine next????. I have a 2006 Jeep Grand Cherokee with just about 200,000 miles. No smoke. Yet you never know how much longer it will run. Yet one of those, now we are talking power. Very cool build.

[@TheHorsepowerMonster]

Thanks! Just hit up www.NewcomerRacing.com when you are ready. Thanks for watching!

[@Whiteandsonsgarage]

That’s so sick, I need this one in my tj

[@vee950]

I need it in my zj

[@scottgarboden4529]

My brother is building a stroker for his 97 TJ. He has a special set of pistons that have a higher wrist pin height to allow him to utilize the longer 4 liter rods. This will give his engine more torque. He also is installing the larger ls valves and porting his head like the one that was in the video. His engine should in theory easily put out more power than the one in the video. His time working at an engine machine shop has taught him the tricks to squeeze all of the horse power that is available in one of these engines when naturally aspirated.

[@timewarpvideo6244]

I need one of those!

[@orated762]

I'm extremely impressed with your knowledge of 4.0 , I have no idea what your talking about. Thanks

[@TheHorsepowerMonster]

Thanks for watching!

[@leonardmacaulay9833]

I have a 74 Gremlin that would be a great home for this build.

[@barryfields2964]

The Gremlin gets a bad rap, I love them. They were actually well built dependable cars, for the era.

[@TheHorsepowerMonster]

That sounds like fun!

[@AB-80X]

Why waste your time with the small stuff. You can shoehorn an RB in there:D

[@sonsralarstoo4273]

... in the USA everyone was brought up w V8 in the blood but inline 4 or 6s are fun and great learning tools ... Especially the 4 cyl imo , super easy to understand and visualize each of the four strokes ...

[@fortj3]

Drop that engine in a Gremlin or Javelin and watch the jaws drop at the traffic lights.

[@shanepowers7566]

Or a Spirit GT

[@eddiepatterson5025]

Gremlin for sure with a TKO 5speed and 3.73 or a 4.10 posi would be sweet

[@Truckerdaddy]

Hell I would just throw in a TJ or CJ and run the trails with it. With that much power you could go just about anywhere with the right gears

[@bdd1469]

@@eddiepatterson5025 I'm using a jeep wrangler bell housing with a aisin ax15 5 speed from a 2wd dodge dakota, and a 4:11 ford 8.8 rear axle....if I can ever find a clean affordable 70-71 Gremlin. They got rare and expensive in the last few years....

[@jonathansparks7558]

fortj3 ROFLMAO!!!!! That setup will definitely turn some heads for sure

[@benjaminsmith7228]

I have an edelbrock aluminum head comp cam with all the supporting mods. Now I just want a quality rotating assembly with forged pistons.

[@joefrazier3086]

I love all the great information.. Thank you

[@TheHorsepowerMonster]

Thanks! And thanks for watching!

[@316fabrication]

Hey. I put a turbo in my jeep just rebuilt the head and throwing 11psi of boost and making 300 to the wheels. I just was wondering if you could make a 4.6l striker for a turbo build that all forged interals

[@TheHorsepowerMonster]

He can. We've got plans for a turbo Jeep build in the near future. www.NewcomerRacing.com. And thanks for watching!

[@316fabrication]

The Horsepower Monster ok awesome cuz if you will have the long block I will definitely be considering buying one

[@paulkaufman4901]

This is very impressive and encouraging for me because I love my 4.0L engines. I wonder how much torque it makes at 2,000 RPMs. When I'm crawling, I like to stay between 2,000 - 2,500 RPMs to keep driveline lash down (5 spd stick).

[@osrr6422]

For a six cylinder, that torque curve is sexy.

[@joedavis2692]

Could the aftermarket build a cross flow head for this enging? If not, why? Same with the Slant 6.

[@foch3]

Pushrod's are in the way.

[@joedavis2692]

Thanks Gabe

[@doddgarger6806]

As shown in this build the factory head is just fine, no need to change it...

[@doddgarger6806]

300+ hp and 330 ftlb supposedly just from a cam swap showed its not necessary that's what I meant... It's so cost prohibitive compared to a $200 cam lol..

[@wvXvxvXvw]

@@doddgarger6806 What video did you watch? This was a complete, 100% overhaul. It has a stroker crank, increased piston bore with new rods and pistons, port work, cam and a $5,000 price tag.

[@SOU6900]

Nice to see a "local shop" on this channel.

[@paladin0654]

Real "off roaders" want torque.

[@splooof]

yea this is what they did lol

[@robsorgdrager8477]

I have always had a spot for straight sixes . My favorite is the Ford 4.9 second are both jeep mills. I'd love to see more sixes in performance builds.

[@Thelankylarrikin]

Suppose you haven't seen the Ford 4.0 barra engine hahahah

[@robsorgdrager8477]

@@Thelankylarrikin I have. But getting em here is a bit difficult.

[@Thelankylarrikin]

@@robsorgdrager8477 that's tru mate, over here there a dime a dozen, can pick up a complete taxi long motor for like $200 and can make decent numbers with only head work and turbskis

[@robsorgdrager8477]

@@Thelankylarrikin I work for Volvo and the closest I get is the 3.2 six cylinder, it's a close relative. I would love to do a fox body Berra build I think that would leave a pile of socks and doors laying all over the place 😏

[@davidjessee7701]

I would love to have thos this motor in my 92 yj with a Holley sniper.. That would be cool... And expensive

[@DUNEATV]

That motor in an XJ would be just awesome!