350 Goes To The Dyno, Nobody Guessed Right

Here is a recap of the dyno of the SBC 350

[@markwise9868]

Engines like this are often more fun in a true street car. Low maintenance, runs on pump swill, plenty of torque and no obnoxious exhaust note for the neighbors to complain about.

[@ictcarguy3162]

That engine makes more than enough power to break every factory drivetrain piece behind it despite being a mild build. Nice work build target achieved!

[@my87z28]

Yup, I had a ‘87 Z28 years ago. I put a mild (450ish hp/tq) 383 in it. The rear lasted about 4 weeks and the 700r4 lasted about 5 months.

[@scotttimpany2845]

I thought exactly the same thing. Factory driveshaft and rear end is history on Day #1.

[@hendo337]

That's exactly what I came here to comment, with a 700R4 1st gear and that much TQ if she romps on it that 10 bolt is toast.

[@chrisreynolds6520]

Would not break any of the factory driveline parts in my 97 Express Van. 4L80E and 10.5 14 bolt in it.

[@ultimatejay]

Not bad, by the time you throw an alternator and belt driven water pump and power steering pump, torque converter, trans and drivetrain it will have about 330hp to the wheels

[@chubbs5188]

I’m gunna disagree with you Eric…. Runs smooth, great street power, no oil leaks, and no headaches…it’s a bragging engine. Awesome job!

[@jamesingram4649]

Lots of similarities 360” sbc 200ik’s edelbrock rpm air gap Wilson 4 hole 2”spacer 750 hp no power valve locked out 38 degrees probe .125” domes comp solid roller 254/260 108 lobe sep. in an 85 Firebird that was a 2.8 4.10 gears 275 drag radials th350 with tci 3800 10” ran a beat so far of a 10.98 at 123 1.48 60’ with foot brake.

[@zAvAvAz]

Hey eric can you help build me a torque monster 350? 1981 to 1970.5 clone its a 378 has a 1.195" piston , 6" rods, 3.66" stroke crank in an undecked 4.052" bore block, pistons are flush. i shall need to save up and get some heads from you it may be some years. i am really slow, like working on this for a dozen years already. i haven't specified a cam or final compression , maybe these heads would work? intend to run a dual plane, have an EPS endurashined right now , although i shall probably use the performer RPM. i put more cubes so i can have greater torque and kept the rod ratio at 1.64:1 for a street machine daily driver with great power. runs manual brake system. and manual steering. high ratios so those are settled. Automatic Th350 transmission modified heavily custom close ratio gearing. Although thinking of using a TH400 or a 4 or 5 speed manual as i still have the clutch pedal for the 81 canadian experimental yet may go clutchless. There is no stall yet. nor a driveshaft or rear gears , has posi. no ignition yet, no heads, no carb yet, headers shall be custom 180* long tubes built by me with long collector, muzzle break box and custom built mufflers. i also want to try a 3.66" crank in a 400 small block to build a 397 c.i. with a 4.155" bore. Just as soon as i get an undecked 400 2 bolt block with a good stock deck that checks out.

[@bumstead1383]

If you built that engine for me and got those results I wouldn’t care what stankin color you painted it. Lol….hellz no

[@BillWilliams-p4o]

What do you think about Rhoades lifters? That has a laser cut "leak"

[@generalsixty2133]

Nice build ! I just dyno'd my 388 sbc jet boat build. It's zero deck .039 quench 10.6 compression. 4 relief flat top Icon pistons. The heads are what I had laying around and are considered wrong for this combo. Old school Victor Jr 220cc race units with .208/.160 valves, 5 angle grind. The head ports are bigger than the Air Gap intake ports. No material on the intake to match so I left it alone and used fel pro-1206 intake gaskets. The cam is a step nose retainer plate Comp billet core with iron gear. 2 degrees advanced, 230/236 , 598/598 on a 113 LSA. 1.5 comp ultra magnum steel rockers. I used low buck Elgin drop in roller lifters with factory dog bone retainers and tray. The valve springs are what #'s worked. Crate 502 GM BBC springs. It ended up liking 38* timing and a 1-3/4 open spacer on the stock Air Gap intake. Carb is a Quick Fuel QR mechanical 750. Secondary jets are 80 pinned at .090". Primary air bleeds are .031" sec are .035. Made 474 torque /4900 475 hp /5400

[@MrGregroberts55]

That HP seems extreme for who it's for, I would think some 1.94 heads, flat tops, something like a 275 hp 327 cam, 600 cfm carb would be around 300 hp, better low end response and gas milage. My two cents...

[@jimkillen1065]

I only know what i been told and seen on some dyno charts . First off is your better off with a bit smaller cam and better heads . A good set of heads can make a cam carry out farther than it normally will . So this is in my option for the dyno reading here thanks for the videos

[@bryang9158]

The heads Eric has on this build are good for a easy 600 hp ,so better heads than this I DNT think would improve anything on this build ,these heads the way he ported them are allready way overkill

[@allenbrixey1122]

I've broken the spider gears of the old 7.5 inch 10 bolt. Right at the starting line doing a dry hop. That little 350 is a easy 12-13 second engine in that firebird.

[@donaldconnolly220]

hy. per. you tec. tic......pronounced

[@jimmy_olds]

RIP right rear tire. For what it’s worth, I had a 3rd Gen Camaro and installed a torsen style limited slip, had excellent street manners. Just in case she gets sick of blazing that RR off when she’s not even trying to.

[@terryenyart5838]

Excellent low-budget build!! Congratulations, Eric. Nicely done. Surprised me with lower compression & small cubic inch. Great video & dyno info as well. Thank you

[@BuzzLOLOL]

HP is from the improved head air flow...

[@Anarchy-Is-Liberty]

I was guessing it was going to make somewhere between 360-380hp. This thing is a beast! Gotta be the head work you did and that roller cam!

[@jonathanlawson4667]

Why would you guess so low lol there's a big misconception that a gen1 sbc can't make power and that's just absurd lol every young kid thinks a LS makes 1000hp and a gen 1 makes 150hp lol

[@waynebollentin989]

@@jonathanlawson4667 lol I know right. The advantage the LS has is the stock heads flow great and they’re stronger but you can build a gen 1 to make a ton of power also. I was actually expecting to see little more of it.

[@ryangulley2051]

@@jonathanlawson4667 a ls is leaps and bound better.head flow 320 cfm and way stronger bottom end

[@jonathanlawson4667]

@@ryangulley2051 it's not leaps and bounds lol you can splay bolt a sbc and it's just as strong. The sbc still beats the LS by leaps and bounds today my friend just depends on how you build them. Sbc won KD this last weekend 13K race and beat out all those LS you speak about and the sbc running a flipping carb as well 🤣🤣🤣🤣🤣🤣 you guys who say that nonsense obviously haven't ever built anything before

[@gordocarbo]

@@jonathanlawson4667 For a gen 1 to make the same it takes more cam timing than the ls thats all. See guys get told on forums to replace thier BBC or 400 with a junkyard 5.3 and get pissed when the car can barely break 13s. haha

[@my87z28]

Dude, 420/420 with that compression, loose quench, lower performance intake and 215* of intake duration, is really good. I estimated 385/415. I knew the tq would be decent, but I expected peak hp to come in closer to 5500-5600, mainly due to the intake. Your sister’s not going to know what to do with triple the hp/tq she has now.

[@johnherdener6801]

425 HP is a pretty stout street engine, especially with that flat torque curvve.

[@jjmccloud]

Where you find a balanced rotating assembly for $570? Sign me up lol

[@BuzzLOLOL]

Do a search, Eagle cast cranks have a reputation for snapping...

[@Levisnteeshirt1]

I'd say the intake was the restriction since the spacers didn't change anything,, a 604 crate motor blueprinted will be in the 440 range both for HP and TQ with a single plane intake ,, 750 carb ,, did see one make 451 hp , matched the track record so I think it was an accurate Dyno run ,,604 crate cam is 208/222-112 @050 , 1.5 rocker , 490 lift range ,, they have around the same compression, ,,

[@hoost3056]

Hi Per U Tek Tik pistons The heads are not too big.....big flow out of a relatively small port means big velocity. Add in the dual plane intake it will pull on the carb hard.

[@thetriode]

That's nice power, I hoped my 383 with stock World SRs and a 276HR would make that kind of output. I bet you're getting 16-18" of vacuum as well and as you said a smooth, lope free idle.

[@deanerbes5725]

For a street only car without a posi...I wouldn't change a thing. Great build!

[@randylankford5775]

Impressive little engine. Nice street car engine.

[@fmsracing442]

Why so much exhaust duration, 17 more degrees than the intake? I can see how that helps above 5000 rpm, but it will hurt gas mileage and if Oklahoma ever requires an exhaust emission test for that car, you will have to change that cam.

[@larryw5429]

Doesn't want lumpidy lumpidy lump lump.. Then has 570 lift cam in it lol! Sweet!

[@richgurley610]

I don’t think the lift gives you lumpity lump .

[@55Dag]

Are you from Enid? I'm originally from Enid. I got a 383 from that machine shop where you did your dyno. Small world.

[@WeingartnerRacing]

I grew up in Enid.

[@____MC____]

Not everyone wants or needs race car engines. It went above and beyond my expectations. Way better than my 355 with a xe284h cam with 1.6 rockers.

[@brianholcomb6499]

I was right about one thing 🙄🙄🙄🙄! When you just stick something together, of course with everything being right machine work wise, they always make better power than you would think 🤔🤔🤔🤔! When you spend a ridiculous amount of time trying to make everything perfect, they always seem to let you down 🤬🤬🤬🤬! It just seems to be that way! My guesstimate was based on china heads & box 📦 intakes 🙄🙄🙄🙄! I should have figured higher because you did the heads! But the 385hp 400tq is what we’ve seen on stockish rebuilds 🙄🙄🙄🙄, which we rarly do! 425 & 425 is pretty good for a engine someone just wants to put around with! I’m sure if you actually tuned on it, it would easily make more 👍🏻👍🏻👍🏻👍🏻! But it’s not needed! (I get it!)That engine will last her forever 👍🏻👍🏻👍🏻👍🏻! Even though the figures say 600 cfm is plenty! The restriction @ WOT would be a bunch 🙄🙄🙄🙄! Every single time we would stick a bigger carb on, 750/830! (because customers already purchased the small carb due to all the estimated sizing charts 🙄🙄🙄🙄) they always picked up power! They only loose if you have something way too big! Did you look 👀 @ the 406? I wouldn’t be afraid to bring it to the dyno you were at, this time! When I said camshaft was off, I didn’t mean the grind! I know you said you degreed it also! But I found a really high end racing engine builders engine with the timing chain off 1 tooth 🙄🙄🙄🙄! Most would say absolutely no way 🤬🤬🤬🤬! But it was! (Yea timing chain with aluminum rods 🙄🙄🙄🙄!) Nobody could figure out why it was a pile of shit 💩💩💩💩! It would also break #8 connecting rod, every 6 passes or so 🙄🙄🙄🙄! Luckily it was a aluminum rod engine 🙄🙄🙄🙄! Which I actually hate 🤬🤬🤬🤬! But in a few cases it is necessary 🙄🙄🙄🙄! I have seen people use the wrong oil pump bolt 🤬🤬🤬🤬! They actually torqued it right into the rear thrust bearing! Then wondered why it wouldn’t turn over 🙄🙄🙄🙄! I also have seen SBFs with the main caps outer lug broken off! The one that goes around the dowel pin! But they did torque up good & they do run fine! I do think the 406 will run fine the way it is. Especially if he will shift it higher! We have had people ask us to purposely kill torque down bottom! Because they couldn’t get the vehicle to hook up 🙄🙄🙄🙄! Those few actually made it down the track faster! Mainly in dirt circle track! Because the tires would just bite instead of spin! Anyway I’m really glad it worked out 👍🏻👍🏻👍🏻👍🏻🇺🇸🇺🇸🇺🇸🇺🇸! I’m sure your tired of all the internet experts 🙄🙄🙄🙄! Have a good week! Remember that those pistons are called HYPER U BUSTIC 😜😜😜😜🤪🤪🤪🤪! Well for people trying to run them over 7000 on nitrous 😂😂😂😂! Your sister is probably never going to go over 4000 rpm 😂😂😂😂!

[@MikeSmith-px7ec]

Yup people have all banded together like sheep that the ideal head for a 350 is a 180cc and for a 383-406 it's a 195cc. But there are plenty of ways to build a engine as seen here. Big, high flowing heads will work great with a smaller mild cam because the cam will make the torque and the larger heads will still flow to higher rpms and make the horsepower. If the same engine was done with a smaller 180cc I'll bet it would've made peak power around 5300-5500rpm instead of 5800 and it wouldn't have broken 390hp.

[@pdubowner]

Lmfao. This dude's "basic" engine for his sister who doesn't give a bleep is better than most guys "full build's"

[@marccres6619]

Ok say what you want ,but my 383 ,with zero deck, Afr CNC ported, custom chamber, big valves, huge cam 680 lift 108 lobe separation, 830 carb. Love is but the power difference is like quick and fast.

[@docsmallblock6584]

The way I see it, if it's got 8 cylinders, any kind of decent head and any kind of cam it should make 400hp! That little 350 is doing good, really good, with a single wheel squeal, well you already know! That one should last her a lifetime!!! 👍🏻👍🏻👍🏻🇺🇸🇺🇸🇺🇸

[@dennisrobinson8008]

I see it the same.

[@benhoke6330]

Great numbers with a 215 cam ! I think with Holly controlling the timing and fuel and 1 5/8 headers it could see 440 tq.that is a great combination for a street car!Good job Eric and thanks for sharing 👍

[@quevicular]

WEIRD how the horsepower started to go up again at 6300

[@95Sn95]

The why not 383 thing yeah I get it but people these days are soooo quick to dismiss 350s as pffff just a 350... 350 can make killer HP and it's simple no custom parts no block mods not that is complicated but still. Take ford the 302 is so common that when people build a stroker 8.2" people are like wow a 347 man that's killer it should make soooo much power ohhhh. Why aren't they saying ahhh 347 not bad guess if going for a mild low hp street build, ahh it's ok not bad but it's no 363, nope people act like a 347 is badass combo especially crazy seems if the deck height isn't an issue a regular old run of the mill 351 gets you basically the same place (actually 4ci more), but with 351 you have better intake runner geometry, better piston geometry and stability and as a bonus big inch stroker options but once again you have a 351 and people will say only a 351... Coulda built a 408.... There's no winning it's all perspective. Imo if your not racing a little more doesn't matter. I've thought of tossing boost at my daily driver 95 mustang gt but I thought when will I use it... To pass a car on my 20 min commute, a fun healthy NA HCI 5.0 engine will def suffice to have fun and save myself thousands and headaches. These gotta have a 383 guys bug me and I e priced it they are not the same price especially if it requires a different flywheel and harmonic dampener/ballencer and piston choice is important from compression ratio changes, it's all good it's not rocket science but not as no brainer as some claim. Rant over.

[@douglash3129]

Hi Eric, The people that are questioning your choices I guess don't know how well your name and reputation carries in motorsports! It's not like you're a newbee .Thanks for your Knowledge and sharing it Eric!!👍👍👍👍

[@95Sn95]

Boy that's a lot of engine for "I just want more power than a 2.8" lol, I'd say a v6 would have hit that requirement outa the park lol....don't get me wrong I'd do the same a firebird should only have a v8 A cool not practical or most powerful but neat would be the baby lt1 L99 4.3 V8, it would make good power get really good fuel economy and just different and with your grinder magic and good cam it would make well over the original 200hp and look pretty sick with the LT1 style intake. Just off the wall bench racing type idea, your sis is getting a nice mill it's basically what I've been wanting to toss together for my truck I would just have a more aggressive lumpy cam even if its not ideal gotta have that lope even if drivability suffers some because you know it's more important to look better than feel better!

[@tommyjm83]

Hey bud question building a 355 sbc. Wanting to make it a bad ass street/strip engine. Going in a 83 c10 truck. I want 10.5 to 1 cpr heads in gonna run afr 195cc. Howards hyd. Roller cam 227/ 233 duration 560 /560 lift 110 lsa torker 2 intake 650 Holley with this set up what kind of power you think I'll get out of her? 93 octane

[@scotthatch4653]

What was peak airflow on the flow bench with intake installed at the lift of the camshaft?

[@thereluctantgearhead4544]

Mahle makes a nice .026 thick, 4.125 bore graphite head gasket that works pretty good. Part # 1264MHP I believe is the part number.

[@nashvilleoutlaw]

Interesting dyno results. I'm building a 385 similar to this with about the same intent but I don't requirea perfectly smooth idle. Just an 87 octane burner with stock stall and vacuum for the creature comforts. I have Afr's version of your heads on order. Planing on a simple 60 grit chamber and bowl blend. Under 9.5 compression for 87 but will be about. 040 quench. Pistons will probably be the thin ring KB hyper 18cc dish. Eyeballing something like the lunati voodoo 219/227 on a 112lsa. With a 1.55/1.6 rocker arm combination would put the lift about. 549int/.548exh. Waiting to spec the heads before ordering pistons or cam. They cant get here soon enough 😂

[@joeshumo9457]

Guys in the comments talking about how to get more out of this combination, and here I am thinking about how it could be made even lower compression and idle even smoother. In an 88 firebird with a T5 and a ten bolt posi with just under a ten inch wide all season tire, I would want about 360 hp by 5,500 and just under 400 torque. Thats enough to blow the transmission, rear end and tires off of it on regular tarmac. Anything more would just feel like a grenade. Especially if it has the 700r4.

[@peanutbutterjellytme]

It’s definitely a bragging engine. You built exactly what your sister (the customer) wanted.

[@KS-dg5zh]

I built a stock cast piston 350 with stock vortec heads,howards hydr roller 510 lift,summit air gap intake ,670 avenger, summit 1 5/8 headers.made 415hp 425 trq.only spun it to 5,500.the vortec heads do a good job of making good power for people with a low budget. Use same combo with a set of alluminum vortec head with a little more compression (quench) it would make about 50 more hp

[@paulthompson8480]

Edelbrock do a 350 with less head but more cam same numbers HP TQ . Proof that good good breathing cylinder heads need less cam . From what I`ve seen unless you go stupid with the heads a slightly larger head is ok . As u go larger in heads u flatten the midrange 5-20 hp/tq but not drastic .A very large exhaust primary pipe does the same . What A dyno does not tell u is throttle response . Highly suspect your heads have a way larger mcsa /pinch than an Edelbrock . What did the pinch measure ???

[@thereluctantgearhead4544]

Hyper U tech tick how we say it around these parts. Or Hypertechs for short. I painted my first engine build yellow back around 40yrs ago. It was a 400 Pontiac from a 67 Firebird. Ran pretty good for a kid building it. I had a uncle that had a 69 C-10 drag truck he raced on the street back in the early 80s, it had a tunnelram equipped 377ci SBC in it putting out 600+hp with a Jerico 5spd in it. The engine was painted yellow. He shifted that thing around 8800rpm. Ran mid 6s in the 8th, I was impressed with it, so I painted my engine yellow too. It was a popular engine color choice back in the day.

[@stevenbelue5496]

Thats the way ive always thought it was pronounced. Theres a lot of brands in the industry i wonder if i pronounce right.

[@stevenbean9706]

my message got erased for some reason i had one with an 900cfm not for the fuel but for the air made 500-480ft lbs but had pop tops floating pins . you should have a few carbs to try instead of spacers the spacers have never done much.thats gonna be totally different with a sniper

[@gordocarbo]

Torque curve is what matters on the st. Great combo there! Too many look at only peak hp and make judgements, couldnt be more wrong

[@gk5891]

I guessed 425 torq at 4000 amd 425 hp at 5500. That's what happens when you have enough head and don't have to try to crutch it with to much cam. You don't need tight lsa to make torque when you are not trying to crutch a poor head. PS Given the rpm it made peak torque and horsepower, the conservative dyno and lack of jetting and timing changes I suspect I guessed low.

[@tomashton1781]

ive heard about reducing the rocker ratio on the exhaust valves to trap more cylinder pressure, any thoughts on that?

[@hereinmissoula]

Heads saved you . Intake and cam not optimal at all. Single pattern cam with your same intake lobe and a 106-108 Lsa would make 30+more ftlbs in my estimate . Bleeding off a lot of midrange cylinder pressure

[@Torquemonster440]

106-108 lsa would idle like crap.. especially in a 350ci engine.. More power definitely, but his sister wants a smooth idle.. not absolute max midrange power.

[@hereinmissoula]

@@Torquemonster440 even with a lsa of 108 , 215 duration will not have poor idle quality

[@BuzzLOLOL]

@@hereinmissoula - 215 duration will lope at a 600 RPMs idle...

[@BuzzLOLOL]

Intake duration, LSA, and intake manifold is great for his sister's daily driver... maybe a tad less exhaust duration... for better MPG...

[@Levisnteeshirt1]

My buddies shop has a Dyno ,, his parts rep says most shops 1st question is , " how do I make it read higher ? " My pal goes for accuracy and other people wonder why his stuff beats them at the track but not the Dyno ,,, these guys doing crate motor rebuilds are the worst

[@scotttimpany2845]

Better hp numbers than I thought too. The cam is relatively mild. Cool

[@finnroen2334]

Thank you. I have been lookning forward to this video. :) Just want to say I posted that I guessed about 1.2 lb/ft pr. CID. 425.1 lb/ft divided by 355 CID = 1.197 lb/ft pr. CID, right? Not way off I think. Mild engines like this can not rev and therefore always produces the same amount of horsepower and torque. :)

[@mikef-gi2dg]

I think the wide lsa and small dual plane calmed it down and smoothed it out for a very flat torque curve. I think it's a great drop it in, go have fun engine, I want one! I would have though the big numbers would kill bottom end, good thing the engine didn't care what I thought. One tip....never tell the engine IT'S NOT AN LS-XX... and it will continue to make you happy.

[@kevinclancy.]

great video, this was a lot of fun to watch, great job

[@blownaway4371]

What I've run into was decades ago I tore down a 350, and to make a long story short, didn't pay attention to mixing up a short headbolt with the oil pump bolt, which is a little longer and pushed into the main bearing, deforming it. But original pump. Just smoothed out. Now I just get a stud for the pump

[@WeingartnerRacing]

It’s very common mistake.

[@Fatt-billy.racing]

As a engine builder its not always about max horsepower. Its about giving the customer what they want and need

[@brucenicov1224]

For an 80s F Body that is PLENTY. She will run real hard…..

[@vinmandich7756]

You know what is mind blowing it wS only a year ago when you made video go check process now and comment I tore Mt car apart started to do build and has sat since Xmas I can't do it afford it when 3 yrs ago the cost of parts in my race engine is less then the price to build a bottom line bomb

[@stevenbelue5496]

Give yourself credit, the heads is where its at, and YOU did that.

[@frankkoppen7281]

waiting to see, ear to ear grin/ smile from your sister on her 1st drive. don't deprive us that fun video. lol probably best to leave the one wheel wonder in it till she gets used to the power. ( easier to control , for people not used to loose rear )

[@georgekalafatis7286]

As you all know especially mechanics if they would have fired that one up that would have lasted a whole 10 seconds

[@alonzahanks1182]

its a strong engine it would make more bigger carb 358 is what used to be in nascars easy 13 second car

[@jeffrykopis5468]

Not only did the non-spacer pull make 2-3 more AVERAGE power, but it'll actually fit under a 3rd gen F body hood.

[@dennisrobinson8008]

I didn't look at specs but nowadays the 350 should be at least 450hp and 450 ft lb.

[@blown572hemi]

In my opinion, this is a sweet combination. Should bring her a lot of carefree miles and could hurt some feelings

[@stevedriver1476]

great engine for a smaller car, like a nissan or mazda or anything under 1100kgs.

[@shoominati23]

Eric, I'm aiming to do a turbo engine based on a dart 400 SBC block taken to a 427 with a stroker crank. Everyones telling me I won't be able to make power with a 4 inch bore and boost. What do you have to say to that? I really dont want to change my planned combination because weight comes at a premium and I dont really want to go to a big block platform If I can help it

[@WeingartnerRacing]

With a 4 inch stroke you have a short compression height on the piston so it is not as thick. You really don’t need stroke with boost.

[@YerkitRacingChannel]

Thanks for sharing Eric! enjoyed the video. I wouldn't have thought you would have pinging issues as the quench is really loose for a NA motor and larger quench areas help with detonation and allow for a bigger tuning window.

[@bobroberts2371]

For some dyno fun, watch / listen to this vid " F1 dyno test engine " on the channel " Rodrigo Coutinho "

[@BrandonSolid]

Great street engine.

[@victoramato4692]

What I believe happened with the oil pump bolt, and I've seen it before, they used a short outer 4 bolt main bolt and not an oil pump bolt. They're not long enough. Only catch 1/4" of threads or less and once pump vibrates it breaks those protruding threads. When laying out your bolts for mains make sure there isn't one longer one! That's the oil pump bolt! It'll fit the main because those bolt holes are open and that bolt won't bottom out. Oil pump bolt is about 1/4" longer. I'm retired machinist. Seen this at least 6 times.

[@WeingartnerRacing]

Nothing happened to it. This is a two bolt main block with arp bolts. Oil pump is a stud.

[@mikie9077]

what 've seen on utube if you cut the divider down is like adding a 1 inch spacer

[@rogerowens5669]

Plugs will tell you a lot lot of people don't pay attention to that Golden Days pull the plugs dropped oil pan

[@bdugle1]

First, you built the exact engine your sister needs (wants) for her Firebird. I guessed higher on torque and horsepower because I thought the heads would carry more torque higher in the rpm range. I’m guessing the low profile manifold held it back. In the car the shorty headers you’ll likely use will kill some of that torque, but it’ll drive well regardless. Great results Eric!

[@jonathanlawson4667]

Yeah needs a raised airgap intake with a spacer

[@BuzzLOLOL]

@@jonathanlawson4667 - Looks like a raised intake, just no airgap...

[@BuzzLOLOL]

10 degrees less exhaust duration prolly would have been more 'exact'... torque come in sooner... better MPG...

[@davidncw4613]

Good stuff ty. I was way off at 375, In my defense it is only 9 to 1.

[@jeffyoung2089]

👍👍 Thanks for the information at the end!

[@markthegunplumber8376]

Basically I built the same engine Vortec L31 truck roller engine because I was afraid of all the cam failures lately. Same pistons stock bore same rings .024" quench and 9.72-1 compression according to the Diamond Pistons cal. sheet .028" chevy performance head gaskets and same bearings and Lunati 20080721 cam 270/278 and 515/530 and AFR enforcer heads. I have yet to install it. It's a tried and true recipe from many youtube vids and it makes from 413 to 440 hp depenging on the dyno etc. I'm putting it in a 1989 Chevy C2500 truck with a 700R4 with a 2000 stall Hughes converter and a stock 373 gear rear end and should be a tire fryer and fun to drive and dependable. The orig. TBI engine was 190HP and should be night and day difference. Thanks for the dyno Video.

[@strydyrhellzrydyr1345]

What... Did u just say.. any rum Diddy rum... What????

[@donaldconnolly220]

so. you ignored your sisters wish and you builr a total all. out.

[@strydyrhellzrydyr1345]

Oh wow... I can hear it.. listen to her... She's still building.. even at 5800... I could hear the jumping sound in the video before you bring it up

[@jesse75]

Another aluminum head engine. Boring.

[@broz1969]

I love the internet "experts" chiming in... It will ping on 91.... lol... I bet most of the internet engine "experts" never even built an engine.

[@WeingartnerRacing]

There is a fair number of idiots in the world.

[@tomstrum6259]

Absolutely Best little Sister motor Build !! .....For That little Short duration cam, It Really cranks out the HP..... Your relatively high Lift Cam gets the Job Done !!

[@JAXTRUX]

I said 420 when you were asking for guesses

[@jalbarado1]

Locked out at 36 will cause hard to start problems when it gets hot.... will need to set up that distributors mechanical advance....

[@WeingartnerRacing]

The sniper will have a different timing curve but peak will be 36degrees.

[@douglasvance2938]

I have painted my engines yellow since I was building models as a little kid, still do 😊

[@mariocooldude9092]

Hahaha 😂

[@gordocarbo]

Mine are usually a lighter gloss gray. Looks great against aluminum polished or not and shows any leak early on. Black makes 0 sense to me

[@martinprehjan9944]

Where was this Dyno located? ...at Munster's mansion??? ...take a look at the spider webs!!! I dig it!!! 21:52 Hey dyno man? Cousin IT is calling you! Now in a serious note: Great job on this motor, for a low buck 350 CID rebuilt/install you cannot hope for anything better that this! Based on what I am seeing this is a solid 375HP/TQ motor! More than enough for your sister and an everyday driver/racer! She must be proud of this motor!

[@EricErnst]

Damn. I wish I would have had time to watch the previous video and guessed a number. I would have guessed about 440 hp@6000.

[@NateDalton]

Eric - I know this was posted well over a year ago, but do you remember where the intake center line was placed? Cam box showed 112+2 but I didn't know if you installed straight-up (110) or advanced.

[@WeingartnerRacing]

110

[@NateDalton]

@@WeingartnerRacing Thanks for taking a moment to reply. I appreciate it.

[@Dr_Xyzt]

She's a charm! I called the torque, but got the RPM off by over 30%. I wasn't even on the dart board for the power figure.

[@coryholbrook4643]

If that engine is in the car now I’m just going to bet the champ oil pan had to go. I have 3 of those things I tried fitting into my ‘86 Firebird and none fit, even stock appearing one. At least not with stock exhaust routing. Maybe you put long tubes on her car. I didn’t like any of them that were available at the time I built my car. Haven’t seen the other video but based on the specs you’ve given and the flow rate of the heads, and at what RPM it made it’s highest hp, even with the low compression and garbage quench, I’ll say 430-440hp.

[@scotttimpany2845]

It''ll make more than 2.5x the power at the tires versus the old engine - probably with just a hint of rump-ditty-rump

[@hendo337]

Hopefully she doesn't have a heavy foot the stock rear and trans are probably in jeopardy 😂🤣 Great work.

[@oikkuoek]

Tbh, those were my initial numbers, but then I thought it would sound like a weed joke.. :D :D Nice package! It has a lot of range, and smooth delivery. A solid street engine. The car's rear end could use some LSD, though..

[@thereluctantgearhead4544]

Those Fel Pro rubber coated steel shim .015 thick 4.125 bore gaskets work pretty good also.

[@krisjones1286]

Biggest issue is she satisfied, nothing else matters. I have seen people happy with MUCH less and some mad with 100 hp a hole. I wish I had a dime for every time I read or heard vizard mis quoted because people don't follow things all the way to the end. I have a 2.8l puking chicken and just about the same build going. Hopefully I get similar numbers because anything near 400 is really fun on the street and can still get enough economy to cruise to neighboring towns. Great job

[@EricErnst]

I'm commenting mid video. Great choice with the sniper setup for your sis. I love mine.