Rebuilt 440 Six Pack ROARS on the DYNO

[@justpray365]

Takes me back to 1972. I bought my first car, a 1970 Dodge Charger 440 six pack. When I raised the hood and saw that beautiful six pack, I was sold. The sound of those three 2 barrels coming in was heaven. Thanks for the memory! I still dream about that car.

[@williamturner8422]

I love the interior on the 1970 dodge Charger. In my opinion it is the best looking interior of any of the older mopars.

[@tomstulc9143]

Truth is when you get up to 425 horsepower 500 foot pounds of torque in any of those big block engines that's as much power as your normal tires and drive train can ever use anyhow.

[@TheNecromancer6666]

The American Version of VTEC 🤣

[@winstonpratt604]

​@@tomstulc9143 well at least give Mopar credit for Matching Dana 60 Rear Ends to them in the 70's

[@rondellschuyler7074]

Love Nick how you always give extra attention to detail. The little things add up.

[@Hyprmtr]

I have that same setup in a boat. I used to run air filter box on my carbaiters but I found some nice velocity stack spark arrestors at Alberts performance in California that eliminates all coughing back through the carbaitors. Those would look sick in a car too. They are very low profile and would fit under the hood.

[@williewonder1282]

I have the Alberts velocity stacks on my 6 pack too! Love em!

[@sampowell1888]

Carburetors* lol

[@karljacob2439]

@@sampowell1888 😂

[@Hyprmtr]

@@sampowell1888 I think it sounds like he says carbaiters in the video. I been saying it ever since I first heard it a year or so ago. Lol

[@danielbutler578]

That stumble reminds me of my first car. It had the 352 T-bird engine and a model 4100 Autolite 4 bbl carb. The secondaries were vacuum operated using venturi vacuum off one of the primary venturis. It would stumble when you stomped the accelerator. I noticed that the vacuum actuator lever had 2 holes for the linkage and it was in the inner hole. I moved it to the other hole and it solved the problem. The first time I stomped it after the car nearly went sideways into a power pole. If you stepped into to get a full power, no spin takeoff she would get to about 30 mph and then you could hear the secondaries kick in. With that car that was your best takeoff. If you did a tire burning takeoff it would actually take longer to get up to speed. I had a limited slip rear end and it would spin both tires every time. It would pass almost anything but a gas station ⛽

[@Vance_Nickerson]

Love the big blocks. Looked like the rear carburetor was dripping gas at idle. Thanks Nick.

[@leelavoie6753]

440 6 pack Never gets old! A beautiful moment when Art and Function come together!!! Thank you Nick and the entire crew. My Monday is now complete. 😃👍

[@ginotassoni4597]

Greating from South Carolina Nick and crew. Love everything you do, viewer mail,shop stuff,etc...but the Dyno Room gets my blood pumping.💪Hope all is well with you,family & crew.👍✌

[@NicksGarage]

We love the dyno too, Gino. Thanks for watching in SC.

[@OlSgtLove]

That's a beautiful sounding 440 6 pack engine and as Nick's say " A Torque Monster " . Nick that was cool with you doing the Air Breather Test ...interesting to see the difference. Not many people today know how to tune the 6 packs to perfection. I fully agree on the ol gas engines too Nick , man if we could just roll the time back to about 1969 ...or so . Excellent camera skills George and always love hanging out at Nick's Garage!!!!! Yall be good 👍

[@NicksGarage]

You're the man, Sarge. Thank you.

[@danmyers9372]

I heard the term “torque monster” for years back in the day. It wasn’t until I started learning about engines much later that I learned that what this really refers to are engines with low HP levels compared to torque. Usually the result of restrictive heads that cause the engine to run out of breath at higher RPM’s.

[@OlSgtLove]

@@danmyers9372 Roger that Dan , I heard that term too, but I'm just using it from Nick ....love it when he calls those ol Big Blocks that . Hope your doing well and happy Dan .Best Regards.

[@Stevespoken]

My friend had a 69 charger rt in hs 440 6pk rebuilt in our senior year 3/4 race cam torque flute b&m kit 3.55 gear we had a ball that summer 12.o 1/4 but 4-6 mpg that car with 53.000 miles was 3300$ I 1974

[@paratrooperlane7022]

Nothing sexier than a 3 deuce set up.

[@User_76ytrl]

This engine is great i like with stock manifolds 🔥👍 keep going Nick, regards 🇬🇷❤️ from Greece

[@eugenecastles7475]

Good afternoon Nick and George, wow a 440 six pack on the dyno, it doesn't get any better than that on a Monday at Nick's Garage.

[@NicksGarage]

Right on! Glad to have you with us again, sir.

[@leeduke9518]

@@NicksGarage hey is there gonna be anymore episodes on the 69 charger 500 I have a 69 Roadrunner im gonna be building im putting a 440 6 pack in it but im gonna have my 68 chevelle done before it so im gonna put the 440 6 pack in the chevelle for now all the 68 chevelle guys hate me cause im converting it into a 69 model My 440 6 pack is 30 over with some sealed power low dome pistons 6 pack rods factory forged crank turned 10/10 and I have a Howard’s Big Daddy Rattler Cam hydraulic flat tappet with 346 heads and a offenahuser 6 pack intake The pistons come close to 0 deck but the dome definitely makes up for it if you had to guess what would you think it would be HP and TQ and compression ratio? (I’m gonna try and find the video you made where went over how to figure up the compression ratio but I can’t remember which one it was)

[@louiskats5116]

Goodday Eugene, Freezing cold here in Melbourne nothing like Quebec but for us Melbournian's it has been freezing cold for the last 2 weeks. It is a long weekend this weekend celebrating the Queen's Birthday on Monday. The big Mid State Mopar Show is on for the first time this Sunday in Bendigo about 100 miles north of Melbourne. I want to display Samantha with Nick's 440 Road Signs but the weather is expected to be shocking. Rain and Hail but will keep you posted. Great show in the heart of Bendigo around the town hall. First show since 2019. Hope you are well. Cheers Louis 👍

[@eugenecastles7475]

@@louiskats5116 Goodday Louis, I know that when it is warm here in Texas, that it is freezing cold in Melbourne. The car show a Bendigo sounds like a great event, I hope that you have better weather than predicted, and you can take Samantha, the road sign, and have a good time. Everything is good here in Texas. I hope that you are well, and that everything is ok. The 500 is just about finished, it just needs an alignment, final polishing, and a road test by Nick. Cheers to you and your family.

[@paulstuck5268]

Nick fatten up the end carbs with the air cleaner on.

[@kathypriddy8430]

Poetry in Motion. Every move, every adjustment has a meaning. Amazing understanding of the Internal Combustion Engine.. well Done Mate..

[@meowerstationone3793]

Waking up to the sound of a 440 6-pack roaring on the dyno. What could be better than that! Got some coffee in my Nick's Garage mug. Even better!!

[@mikestackhouse9001]

I just love the proof that air cleaner does not rob HP and torque even got slightly better. Equalling the factory HP of the venerable 426 Hemi is just amazing with a slightly better than stock cam. I know what it feels like to have that immediate rush when you hammer a 440 6 pak properly tuned! Thank you for making my day guys!

[@ThePaulv12]

Nick tested as stock a Hemi as can be made today and they make ~490HP from the factory. Massively higher that what the factory said they make. Check out his vids on the channel and in the hourglass symbol on mid screen right type in Hemi then 'Enter' and you'll find it.

[@judgegixxer]

The dumpster outside Nick's is full to the top with timing guns. lol

[@jeffjankiewicz5100]

440 Six Pack! Awesome 👍😎 goodbye tires, 500ft/libs will break them free 😁. Thanks for sharing this old school cool setup Nick. Brings back memories.

[@NicksGarage]

Right on.

[@sonyhk3824]

Let's take our places and see what Nick has prepared for us and what George has photographed. Cheers guys 👍

[@NicksGarage]

Welcome back, Sony.

[@sonyhk3824]

Thank you guys 👍

[@faerieSAALE]

If that is the original engine for the Challenger R/T then he owns a $IX Figure car. The car looked pristine too.

[@largelarry2126]

We had both, a 70 Challenger R/T 440 4V and a 70 Hemi Cuda both 4-speeds and both had super track packs with Dana's and 4:10 gears. The Hemi was a fully built street motor and the 440 was almost stock. Every time I drove the Challenger, I would over rev it trying to get it to pull but it hated any sort of higher RPM and felt like it had a governor, just way under carbureted with the AVS. Nice seeing Steve in the dyno room and keep pumping out the videos I love them.

[@frogwizard5637]

Six Pack Attack on the Dyno! Let's hear it roar Nick! Hi George!

[@NicksGarage]

Welcome back, Frog.👍

[@joelenglish7092]

Thanks Nick and all @ NICK'S GARAGE for bringing us this video !!

[@ronnieellsworth9223]

The 440 is one of Mopar's best engines. Back then too, you could get them any way you wanted the fuel system ( 1x4, 2x4, and 3x2 ). Thanks for the test. It was interesting to see the difference in power. Ronnie.

[@victorwilburn3498]

Nick: Nothing like that WOT sound! Once again, you let me..time travel. Great video. Keep it up👍.

[@nerradnosnhoj5122]

Nestle Quick Chocolate mix ..a Timeless Classic !....... Cheers from Saskatchewan

[@frankcherry3810]

When i was a young man I had the opportunity of ordering a 440 6 pack new. The biggest questions came over how able I was to properly adjust the carbs. I ended up ordering a new 351-C mustang cobra with the 4 bolt mains

[@Carl6231]

Very impressive on the horsepower and torque on that 440 six pack!

[@davidtolson4804]

I watched another mopar enthusiast called Simpson speed on you tube and they built a 440 stroked to 505 with trick flow 240 heads a solid .562 flat tappet cam and it made 668 h.p. with only 33 degrees timing. And now I watch you with a .030 over 440 and it makes 425 h.p. with the factory manifolds 😮. Both engines are pretty stout.

[@strattuner]

most powerful wedge in the world,everything you do to it,it responds,the innovations on this design is remarkable,power on tap

[@someguywithaphone5921]

Favorite all time engine combo. Earphones on, volume up. Thanks buddy!

[@NicksGarage]

Enjoy!

[@williamjones4483]

I used to have a 1978 Chrysler Cordoba that was completely assembled at Windsor Assembly. Quite a decent car. Came with the 400 cu. in. 2 bbl and A727 Torqueflite transmission

[@frankierutherford1888]

Don’t let the man get cha. Thanks Nick

[@robertorhymes]

Working on a 440 six pack Nick's Garage on a Mopar attack It's an excellent example let's take a sample I bet the torque and horses are ample Bulletetproof reliability that gives you tunable ability Nick has checked for leaks he wants to make a show for us horsepower freaks Nick can tell you everything just from the observations of the harmonic balancing This one is gonna sing Nick's Garage every Monday is just the thing

[@karaDee2363]

Great job Nick, and really impressed with the 500 lb of torque, and 425 horsepower.. and I enjoyed watching you do the Dyno pulls without you needing to chase after and correct greenhorn mistakes... The only thing I didn't like about this was the dead spot when the other two carbs kicked in..

[@nabil9240]

A silky smooth dyno session!

[@NicksGarage]

Thanks for joining us, Nabil.

[@steveshoemaker6347]

Nick & guy's l need to make a comment before l watch the video....Cause it is 14 minutes to 12 0;clock ans l want to make it the same day George posted this video lol....Thanks so very much....Shoe🇺🇸..... After l got out of Navy ....l was a Police Officer for a while and My patrol car had a 440 6 pack and it had a stumble as well....We could not ever get the stumble out....!

[@williamkroth9429]

At 23:35 the rear carb is dumping fuel at idle. I have heard this setup could be tricky. But that engine is indeed a beauty.

[@hillarylevenworth8824]

WK on top of Nicks miss!😁

[@terencerucker3244]

Man-O-Man, this sure takes me back to my high school days. I had a 440 GTX with this exact setup. Just loved the sound of my car idling in anticipation of getting her opened up. Cruising 4th street in San Rafael..... Ah, good times for sure! Thanks as always Nick.

[@electrolytics]

Yes please. Love the stock exhaust manifolds. Chrysler Power! Amen.

[@vaughnhill3437]

We have one that runs in our garage that has less than 100,000 miles on it outta a1976 dodge 1 ton van. Were gonna build a back up motor for our 71 dodge demon bracket car. It has a 650 to the rear wheels 440 in it now. Very violent car when you release the trans brake for sure.

[@gregdoherty6839]

Nick, I'm sure many of your viewers own their own garages. I personally would be interested in a Nick's Garage sign that I could hang on the wall of my garage. I bet others would be interested in that as well.

[@nickpanaritis4122]

Good idea. Will work on it. Thanks.

[@izzynutz2000]

Oh boy oh boy oh boy oh boy oh boy

[@NicksGarage]

Glad you are here, Izzy.

[@zAvAvAz]

500 tq. and 425hp. awesome dyno day. And awesome 1974 dodge charger!

[@RaymondL704]

Wishing I'd had you to tune my 70 RT back in the day Nick! It was modded a bit, Edelbrock intake, hooker headers, Holley 750, updated cam. don't recall model or spec now. After all that, never felt like the engine really reached its full potential. Keep up the good work Nick, learn a lot from every one of your videos!

[@larrybone4565]

It's hard to believe that 440 Six Pack was one of the best and most popular muscle car engine.

[@55desotomine]

Rear carb is dumping gas down the throat when closed, bad float maybe or trash in the needle and seat.

[@ericbeeman8717]

That deep throaty roar of a big block just sounds so bad ass and ya know one if ya hear it down the road to haha awesome

[@NicksGarage]

Sounds good from all angles. Except under the hood of the cop chasing you.

[@ericbeeman8717]

@@NicksGarage lol right while they're getting left in the dust and exhaust lmao

[@stevelioliopoulos4902]

Greetings Nicholaki from cold and winter Adelaide Australia. Not driving weather unfortunately.

[@NicksGarage]

KZbin weather!👍

[@brianwood9687]

Great idea! I have 69 roAdrunner 440 6 pack. I did exact same 25 years ago with quick fuel plates. I actually had to groove quick fuel plates with milling machine. Float was rubbing plate. I run 65 on center carb and split jetting on outboard carbs. I have played with Mopar six barrel pack for many years! Love that fuel line setup! Iron maiden!

[@deronborghi5929]

I'll have to add the cup and beer glass to the Nick's Garage collection

[@NicksGarage]

We appreciate the support!

[@bluecollar58]

I don’t remember peanut butter glasses but we had a cupboard full of jelly glasses and glasses they would give you at gas stations.

[@GeraldClouserjr]

So?..got to put 70 Cuda 6 pak back on road..43 yrs 20 plus yrs in the garage..just did not have a reason..Nick you just gave me the sign i needed..Jerry in Texas..peace!

[@SgtStedenko1]

I have the exact same setup with a custom six pack flat tappet hyd cam from Hensley Racing and and my center carb uses a billet metering block that accepts Holley jets. I also have TTI headers

[@larrybone4565]

My favorite muscle car engine

[@brucejones6794]

Peace Love and Muscle Cars forever. Thank you for the video Nick. Please keep them coming.

[@NicksGarage]

We intend to! 👍

[@4ondflor]

Great patina on that filter cover!

[@davidstuck2866]

this may sound odd. but back in 1977 when I had my 1973 Dodge Charger, I installed and tuned the engie and six pack. I found that by installing two different springs (from the Holley spring tuning kit for vacuum secondary's) in the vacuum diaphragms, I could tune the six pack so there was no stumble at all. since the 2 outboard carbs are linked together, it essentially acted like a dual rate spring. i found where it just started to stumble, then i went one spring firmer, and all of the stumble totally went away. just something to put in your bag of tuning tricks. by the way, I LOVE YOUR CHANNEL!

[@KENNEY1023]

The engine sounds really healthy, great job as always.

[@johnki325]

Back in the day I would use a vacuum gauge to adjust the 4 barrel carb on my 383. Worked well.

[@Tigerpaw1129]

Nick -Rich at idle One of the outside carbs was dumpimg gas at idle after the run.. float adjustment .

[@onedayiwillmakesomecontent]

We all need to crowd fund Nick a year's supply of timing lights, or Nick needs to switch to EFI and just plug a laptop in... 😉

[@blinkie1523]

Thanks for the 'Petrol' Gary. Hello Nick George & Steve, so once again Nick it makes little or no difference with or without, still a beaut engine just the same though. Steve's ride looks pretty neat in yellow sitting out front. The two new products for sale look way cool. Thanks for yet another beaut video, stay safe & well till next time.

[@bobjohnson2920]

You also increase cylinder pressure with each pull due to the rings seating in. I bet after 500 miles in the car you can get another 5-10hp out of it. And you will also be pulling in more fresh forced air from outside the engine bay with that air box.

[@cryipticcreep5586]

There are a lot of good Mill Builder's, but if had the money for a build it would go to this man 💯

[@darthgrundle2349]

Great job as usual Nick! Great seeing a healthy 440 Six Pack pull on your Dyno. Two of my best friends back in the early 70's drove Molar muscle. Joey had a 70 Four Barrel 426 Hemi Cuda, John had a 70 Six Pack 440 Challenger, both 4 speeds with Pistol Grip shifters. Of course they raced many times. Can't really say one was quicker than the other, whoever got the better launch off the line usually won, they were that close. I always leaned towards the 440...The Hemi back then was getting all the attention of a Beauty Queen with no mention of it's high maintenance costs!!!! Whereas the 440 was like the girl next door, always got the job done with no fuss and with legs just as pretty as a Beauty Queen!!!!!!

[@69dodgecharger440]

I thought I saw fuel dripping in rear carb when you were in two barrels! I had needle & Seat failure last year! 😵‍💫

[@ericball6000]

Dr. Nick, it is cool to see how a 440 6 pack works, when that throttle is wide open, it is pure Mopar horsepower, cheers.

[@lonewolf744]

The thing about old American Muscle Cars is their is so much sexy, classy and straight up badassery all wrapped up in one. Nick Is The Man. 🇺🇲🇺🇲🇨🇦🇨🇦

[@rogersmith7396]

And total impracticality. Daily driver with $6.00 gas?

[@greggsvintageworkshop8974]

She sounds awesome Nick, and the power and torque is amazing from just a mild cam and .030" over bore. Really NICE WORK!

[@rickbailey189]

Thank You so much Nick for demonstrating the true power of the 440 6 bbl. What a powerful engine indeed!

[@blessedhellride2615]

This is true, for the secondaries to work properly, air cleaner must be on these carbs, they are totally reliant on strong vacuum signal, which will increase with air cleaner in place, also you may have to change the springs in the diaphragms, increase the power valve size in center carb, and increase the size of metering plates in outboard carbs. these items all provide a smooth transition from low speed circuit to high speed circuit. You are very lean!!

[@BuddWolf]

Another great video post from Nick❤️👍🏼Thank you. We are indeed fortunate, to have you on KZbin, dropping your knowledge about the fine tuning, unseen or unexpected ways of getting that extra power from engines, testing them out, getting the results you expect,or you dig harder. Youve got a work ethic so rare these days. Always putting in extra time for costumers You brighten my day when I watch your videos. Thanks again and God bless you Nick.❤️

[@NicksGarage]

Thank you for your kind comment, Budd.

[@minnesotatomcat]

Very nice numbers! It really surprised me how there was very little to no power loss with the air cleaner on, I’d have lost that bet. Keep those big block mopars coming bud 👍

[@70stunes71]

This is why races between the 426 cars & the 440+6 cars were close. The 440+6 is an impressive engine for being a factory developed unit more than 50 yrs ago

[@jaystrock613]

It would be nice to have a set up that you could see the timing in the control room.

[@garyhopkinssr8561]

Hey Nick you and George do such a good job on these videos man I'm telling you I don't know any other video that I would want to watch these are the best makes me happier than a pig in mud by golly thanks again

[@bulldog161]

Hey Nick, I was 18 years old and I had a 1970 Plymouth sport fury with a 383 with a holly 4barrel and I had it in my dads shop to change the oil and filters and tune it a little and I drained the oil and changed the oil filter but I used some Varosol cleaner to wash out the pan of any grit etc. This 383 had a dual point distributor and I was going to set the new points I got for the tune up and I changed the plugs as well. I left the oil fill cap off the valve cover and I had my girlfriend engage the engine to turn the distributor to the top of the cam to set one set of the points. Well the varosol mixed with the old oil creating fumes that ignited and of course I was leaning over the oil filler and the flames briefly blinded me and toasted the hair on my arms and head. The lesson I learned was to never ever wash out an engine with Varosol. It scared the crap out of my girlfriend and me but we laughed about it when I could see again. I thought you may enjoy a laugh. Don’t work to hard.

[@ponyrang]

Wow, My best friend, Thank you for your hard work in making the video. I enjoyed the good video. Have a happy day.

[@pappy017]

Evenin Mr Nick!! Run 440!! Have a Great Week!!

[@NicksGarage]

Thanks! You too!

[@boblang409]

dripping carb after first pull gave the erratic idle.. typical holleys and after a couple revs back to normal. thanks good stuff.

[@cudaman-yq7pq]

There was such a thing as an RB 383. It was only available in 1959 and 1960 on the US-built Chrysler Windsor and Saratoga.

[@nickpanaritis4122]

Learn something new once in a while. Thanks

[@bobsclassiccarsparts8772]

@@nickpanaritis4122 I have a video of one on my channel. 383 RB Golden Lion

[@lainemann1421]

You are awesome 🤩 Nick , my favorite 440 ! Have had several 69 Plymouth Roadrunners 2 door hard tops not the soft top ones, a couple with 383 Magnum, one with a 440 Wedge , a 392 Hemi , and a 440 with 6 pack , loved them all especially the ones with the Dana 60 rear with 354 lock possi gears

[@viewonthelake1]

Another awesome Monday show. Nothing sounds as nice a a 440 6pk screaming away !!

[@gregosborn9004]

I still like the ram pickups I'm on my 4th one 2019 Just added a tuner from Holly I love it. Thanks for your show.

[@winstonpratt604]

71 GTX 440 4spd Dana 60 Cars are the greatest Mopar ever made imo 🤙

[@brunotulliani]

Good evening ladies and germs! That yellow Charger is just beautiful! That yellow just pops!

[@jamesshingledecker3158]

Strong motor, gotta love the overhead camera view when the extra 2 barrels kick in and you can see the fuel dump in!! 👍 Great videos Nick , I'm glad I found your channel...

[@NicksGarage]

We are glad you’re here.

[@kevinwoolmer5478]

Another fantastic show! I love the 6 pack/bbl vids. Always delivers never a let down

[@blessedhellride2615]

#3 carb is also dumping fuel from venturi at idle, adjust float level.

[@JackFlemingFan1]

Thanks for posting yet another excellent video Nick! I really enjoy watching and learning from you on whatever you happen to be working on.

[@Reapergames545]

Amazes me how many times the numbers start with XX9.9X and Nick hunts for the extra .XX and almost always finds it!

[@lainemann1421]

Also the Badest one l build myself had the 440 Wedge , Super T-10 trans with 11” flywheel, Lakewood Scatter Shield, in line Mr Gasket vertical shifter with seperate reverse , the Dana 60 with 354 lock possi gears l got out of a totaled in the front Super Bee 🐝, l had Centerline Comps on the rear with Mickey Thompson N50’s on15” rims that’s over 12 1/2” inches of rubber on asfault 😎

[@johnhayes9437]

A work of art - good job Nick

[@howard7907]

PEACE LOVE MUSCLE CARS Only at Nicks

[@nickpanaritis4122]

I wished the whole world the same.

[@CoastalAutoReactionCAR]

Gawd I love 6-Packs!

[@NicksGarage]

Here here.

[@MikeJBlues]

If I had to choose between a 426 hemi and a 440+6, 440 hands down. Awsome Monday!

[@shanewalker6451]

hi nick i reran the end twice and looked at your #'s sheet on the last run without air cleaner. i dont know if you noticed but the hp jumped at last minute at 5300 rpm to 427.3 indicating the engine may make more power at higher rpm. you have highlighted 426.5 at 4800 rpm

[@donaldhalls2189]

The straight 6 265 hemi with triple SU,s used to beat the XW 351 shacker here in Australia, on the quarter mile, if they outlawed gasoline I think we would go back to the moonshine days and produce our own fuel 🤣😂 all the best to yous and your loved ones

[@rogersmith7396]

Alcohol. Nitro methane.

[@OlSgtLove]

Hey , everyone! Hope everyone is doing well . Getting our Nick's Fix for Monday !!!

[@NicksGarage]

Thanks Sarge. Glad you made it.

[@OlSgtLove]

Always great to be here with yall ...Smile . Hope your doing great on this Monday ...Big Wave and Smile to yall .

[@jamiestanford3493]

You're the best Nick

[@NicksGarage]

You too.

[@delphi-moochymaker62]

I had a 440 six pack in a 72 'Cuda back in the day. Replaced the stock 340. I wish I had Nick around to keep those carbs tuned correctly! It wasn't easy. it actually got better gas mileage, than the 4 barrel double pumper, until you get into the throttle. 😏😏 Had the 272 rear end. Allegedly, you could bury the needle on the 140mph speedometer. Allegedly.