Cheap Chevy 350 Power! 400+ hp Vortec Heads LT4 Hot Cam Dyno (L31 Budget)
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- เผยแพร่เมื่อ 12 ก.ย. 2024
- Gotta love vortec heads! The low buck 350 L31 hits the Dyno! The results were better than I expected. This is a super simple build and an easy way to make 400+hp and 400+ ftlbs of torque out of a 350.
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Hei Distributor
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Holley 750
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Vortec Exhaust Porting
• Vortec's - How to Kill...
Shim Head gasket
• Finding the REAL Head ...
Beehive Valve Springs
• Beehive Springs on Vor...
Intake Manifold
• Best Deal on a SBC Vor...
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Awesome video! Pretty insane HP. People definitely sleep on the SBC with all the LS buzz. Just picked up a 283 to teardown/build, pumped!
I built a 283, one of the first motors i built and it ran really strong in a 89 s10 with a th-350 trans. Motor was .040 over 289ci, had a set of stock vortec heads, rpm air gap, and a comp 268H .454/.454 lift with a 650 holley dp
Awesome output on the budget build. I would like to see the same engine (L31) with a base 383 kit with the same cam to see the difference.
Would be interesting for sure
Car craft did the same expériment in their february, march and april issue 2004. Incredible!!!!! I built Few of them, and with ported heads it should!d gain 30 more HP!!!!
he did port the heads
2 weeks ago I guessed 395HP spinning to 6300!!! I wasn't too far off and I'm glad it made even more than expected!!! I love it made even more torque but a pretty square motor in the numbers!! I can't wait to see the next video with the spacer!
Edit: I cannot believe how easy it is to build 400+hp nowadays! Just 20 years ago, you had to buy a Z06 to get 400HPs in a small block!!!
Why do you say that? 20 years ago I had a very similar setup in my 1983 G20. 5.7L Vortec with a Hotcam, GMPP Vortec Q-Jet manifold and headers. 407 hp and 438 tq.
Also 13.50s @ 101 mph in that 5,300 lbs 3.08 geared pig.
@chrisreynolds6520 That's awesome! I'm happy you shared that. Without knowing how much you spent 20 years ago to make 400HP, I guess I was comparing the cost and abundance of 400hp now vs the cost and abundance of 400hp in the 2003 where vettes and vipers had that kind of factory HP. I know it was possible to build a 400hp motor 20 years about, but by today's standards 400HP isn't uncommon. For example, an explorer ST cranks out 400HPs and some KIAs are boasting over 500HPs.
@@HOMEWORK4.0 Low mileage junkyard L31, cam, springs, retainers and an intake manifold. My van already had a Q-Jet, HEI and Thorley Tri-Ys on the 305. My Hotcam came out of a friends LT1 Camaro that he put a CC306 into. Really want to crank out some power from one of these on top-end, use a CC306.
@@chrisreynolds6520whats a CC306?
Heck yeah, I'm impressed! Those are bigger numbers than I expected too. Vortecs rock, and the LT4 Hot Cam seems to be a good street piece. I'm a big fan of this kinda combo; mild cam and decent heads. This is so streetable.
Awesome power on a budget build with a streetable cam.
Perfect mill for 55-57 Chevy and manual transmission
I set up. The Vortec heads make the difference, my option. “I’m an Ol Camel hump “ guy. Keep up the work very very informative.
Thanks man appreciate that
Wow you did some great work those were killer results! I never knew vortecs could be ported to gain much
Got an L31 sitting that I'm getting ready to do pretty much the exact same build to and drop into my 85 Trans Am and those dyno number got me excited.
That’s extremely impressive for how small the cam is, I’d love to see what the power curve would look like with something in the 225-230 intake range on a 106 lsa.
A vortec headed build with more cam, more duration and tighter LSA is up next 🤘
@@cuttersperformance is this setup already done?
What a great, simple, solid build! SBCs FOREVER!!
Lukes is Canadas best kept secret! He grinds cranks in house, balancing, line boring, etc. Truly a one stop shop, and very knowledgable guy.
Hell yeah he is!
It will go to his head if I compliment him, so let’s say my account was hacked. 😀
@@scotts439 😂
@@cuttersperformance can you port a set of vortecs for my build.
I'm not surprised. Simple combos usually work best.
outstanding! HP with some heads, and freshing up!!
Built my 355 v2 based on your videos. Almost the same except for enforcer heads and 10.27 compression
What a great job you did with this one. You have obviously learned your budget porting lessons well.
Installing same combo except using the GM ZZ4 cam. Now I k own what to expect. Thank you.
Isn't it funny that no one was making this sort of HP when these first came out yet not much has changed in parts dept !
Crazyyyyy Vid. And this is why we love SBC. . I think exhaust side porting, cam and headers was key in this combo. As always keep up the great work Pat.
Thanks Jerry!
@@cuttersperformance when I've been doing this for forty years at the dealership Chrysler and GM Master certified
I remember when you couldn't get any parts that were reliable back in the 80s when I started my career things were a lot different
@@MichaelMatt-ts2mv nack then you need ported double humps 11 to 1 a 244x@050 HFT cam were lucky to see 380-400 depending. Its all in the heads
thats some awesome numbers! I'm not that surprised though, vortec engines have easily unlockable extra power.
i pulled a 98 vortec from a pickup with 140k on it, re sealed it, new timing set and hardware, GM ramjet cam, edelbrock intake, shorty headers and slid it into a 93 OBS to replace the blown TBI 350 and wow!! that truck never had that much power before, not 400 hp but waaaaay stronger than TBI or a stock vortec. just from that small RV level ramjet cam, intake and headers and exhaust. it is a different animal.
idk how much HP i have from that combo, never dynoed. maybe 325-350HP and like around 375 torque? just a guess. its a really strong vortec either way and runs great.
thatnk you for making these videos, so appreciated.
id say around 330hp, 375 ft lbs
Really love the vortech stuff!
These numbers are right inline with my flat top 383. It has ported 906 Vortecs, Edelbrock dual plane intake and a Brawler 750. It has just over 10:1 and made 456/462. The cam was a Comp roller, I think it was pretty close to the lt4 hot cam, 224 @ .050
What head gasket did you use?
Great build! This engine in a little Nova with a stick and 3.73’s would be a blast.
100%!
I have built a few with flattop pistons and the lt4 hot cam. A friend has one in a 3rd gen camaro with 150 shot. Kicks ass on the street!
Yes sir! Been waiting on this. Thanks for all you do Pat!!!
Sorry for the delay! Thanks for the appreciation 🍻
I did the exact same build with a 93 LT1 camshaft and 1.6 rockers. Was very surprised at how strong it runs.
We had a 96 t/a
13 .06 all day long
Long tube 1-3/4
True dual w/ xpipe and dynomax bullets
1.6 rockers
3000 stall
Stock cam and gears!!!!
6:40 .... the GM camshaft you mentioned, 208/221 - .474/.510 - 112LSA, its the exact same camshaft used in the ZZ4 crate engines when available at the time. Nice engine, but this modified vortec 350 is a nice upgrade, even with less compression, 9.3 vs 10.1(zz4) with L98 corvette aluminum heads, known to flow less than the stock vortec heads. I'd gladly take this budget buid vortec 350 over my ZZ4 crate engine currently running in my '79 malibu 2dr coupe anytime.
Love that I found your channel, doing the exact build I'm looking to do. I'm getting the last things dialed in on my 84 ls camaro but ive been doing a ton of maintenance and refreshing on a 88 TA LB9 T5 car I bought. Here soon I'm hoping to snag a marketplace L31 for cheap and either way I'd like to take it to a local shop to be refreshed. I'm set on the lt4 hotcam as well and your videos have only reinforced it for me.
I want to keep it a TPI car with a super simple reliable setup that will still be able to be my fair weather daily driver but have enough power to get out of its own way. I'm definitely going to have great low end with the TPI but definitely not going to see near your hp numbers. I scored an old school Street & Performance TPI Intake /w Ported SLP High-Flow runners so hopefully it'll be enough to let the hotcam cook a bit.
Hey just wanted to say love your content! I'm getting ready to put a dirt track motor together with the help of a friend and I'm excited!
Thanks man appreciate it
Dude! Im completely impressed. Your doong a great job with your videos!
Thank you I appreciate that
This is basically a direct copy of my build.Complete stock bottom, followed your porting videos (i do have the mexican castings with Manley street flow valves) GMPP dual plane and a Comp Cams XR276HR and roller rockers.. I always guessed it to be in the 375hp range with a Qjet on top
This little motor reminds me of a engine build back in the popular hot rodding days with the eq heads with the other work done on the engine and I have the engine build specifications with the magazine the kiss for sure
Awesome video and build! Great Job! 😎
I built an L31 vortec 350 crate motor stock bottom end put a comp cams Big Mutha Thumper hydraulic roller 4 degrees advanced for valve clearance mild porting on the heads with guide plates screw in studs double springs and 1.6 roller rockers speed master single plane with 750 brawler went 11.s in my 3200 lb nova and Rev to 7000 all day
Hell yeah 🤘
I have a very similar L31 ported VTEC heads xr288hr with LS9 valve springs super victor intake . The pistons are 604 crate flat tops. Stock rockers I ground out the slot . Doesn't stop pulling in rpm, the tach recall said 7800rpm.
Nice chill video. New sub here brother. Bad ass job!
I have this exact same set up on my car with the summit roller cam 8803. .550/.550. I’d guess my engine is 415hp, 425tq, which my cam is just a little bit more than the cam you used. I’m extremely happy with my engine and I’d absolutely do that exact build again
I have the summit 8802, and looking at the specs it's almost a 1 to 1 rip off of the GM hot cam. Only real difference is that it hits .525 lift with the 1.5 rockers instead of needing the 1.6 Rocker that the hot cam needs to achieve the same lift. Very happy with how it is working with my SBC, where the old comp cam I had would fall on its face at high rpm. It even plays nice with my Ebay gt45 turbo!
I'd like to build one with 11:1 compression, and install a 24X reluctor under the timing cover so a 0411 PCM could run it, with 60 LB injectors, and E85.
😂
Absolutely love ur vids and how informative you are! Curious what octane were you running?
I believe 91 on this engine but it can run on 87
Well done!! that compares to my BP3503CT1 Vortec motor from Blueprint engines almost 1:1 (Of course you cannot buy that Blueprint engine any longer What your doing here showing the rest of us how to build something like these fantastic Vortec engines that really go the distance and make awesome daily drivers along with easy to work on, low cost on replacement parts and maintenance is a breeze. Keep the Vortecs alive, I believe they are one of the best GM engines ever made that are affordable. The LS line up is for sure all the craze these days, that said dollar for dollar i'd put the challenge out there the Vortec holds up well.
I called it at the beginning infact I was 10 hp shy on my guess vroom vroom love those vortecs brother
Really sweet to see the lt4 cam results because I have the lunati 270 voodoo roller for my 383. Identical valve timing as the hot cam just different lobe profile and .549/.565 lift with 1.6 rockers, ground 6.5° advanced vs the lt4's 2° advance.
385ci somewhere low-mid 9.1 compression. Budget afr 195 heads with 5 angle valve job, smoothed runners, port matched, thin rings, 0.040 quinch, performer quadrajet intake. 450hp I'll be happy but any closer to 500hp I sure wouldn't complain. No matter what it puts out it'll be a major upgrade from the bone stock 120hp/210tq 1985 tbi 4.3 in the el camino running on 5 cylinders😂😂 poor ol gal can't even maintain 60mph at the moment 😢
Very impressive! But, when you think about the LT4 engines that went in the 96 Vettes, it really shouldn't surprise us. Those cars would really get it!
I am surprised that the usable power band extends all the way past 6000 rpm with that cam.
Really looking forward to the videos on port work done to those Vortec heads. I've always heard it's easy to go too far with them.
Again, awesome results!
Yeah they are very easily over ported on the intake side
His cam is the hotter GM ASA Racing LT4 Hotcam, not the production 96 LT4 cam. LT4 cam is 203/210 @ 0.050 vs 218/228ish @ 0.050 for the Hotcam.
Just watched Tony Angelo chassis dyno a 6.0 Chevy and really your budget engine is pretty close to a 6.0 Chevy with a lot bigger cam. Old school small blocks are still awesome.
since you are running carbs... do you bring the RPMS up to around 1700 and look at the air fuel ratio display. see how close it is to 12.7. change the idle feed restrictions to fix this off idle lean or rich..
many holleys ship with 0.031" idle feed restrictions .. those are about right for 327, 331 engines.. 347 to 360 engines need a 0.032" idle feed restriction..
if you bring the rpms up to 3700 to 4000 and hold steady.. if its lean.. go up a size on the primary main jets.. if its rich.. go down a size and retest..
I'm surprised.
Very exciting to me.
This engine are amazing 👏
Really wished you had run some basic 1-5/8" long tube. Or even shorty, block-huggers for some real-world numbers since this engine recipe would be great for street-going, weekend cruiser hot rods that wouldn't be running pricey, high-flowing 1-3/4" headers. I don't think the smaller headers would've hurt output too much. But it would've been nice to know how much they did.
The headers used are a chassis header unlike alot of dyno headers you see, but yeah would have been interesting to see the what 1 5/8 would change, honestly probably not around though. Also believe it or not those 1 3/4 headers are like $315 (Hooker racingheart)
I'm in the Niagara area. I'll make it a point to look Luke up, when the time comes. In the meantime I have to get my engine out (when the snow flies), and then make a few decisions. An L31 might just be in my future due to the flat tappet issue. Then again, I may just need an oil pump. And a cam, lifters, valve springs, rocker arms. lol
Yeah, he's just a one man show and has lots of nice equipment. I currently have two blocks there right now getting done
I'd be interested to see how an Edelbrock pro flo 4 would compare to the carb on this setup. Both power & fuel efficiency.
Pat im hoping for about the same hp and i have alloy heads 10.2:1 comp and hotter cam...
your little engine has done very well....good job..... Brett
Thanks man!
i built one for my k1500 was 465hp and 480 foot pounds used david vizard recipe speedmaster heads flat top pistons with quick fuel slayer 750 cfm lt4 hot cam from wilhoits oklahoma city
Thats really good for this cam, what displacement?
355@@cuttersperformance
flat top pistons and eldelbrock performer rpm air gap intake wilson manifold
@MichaelMatt-ts2mv that very impressive torque for a 355 and that cam. Ive made similar hp with similar heads and cam but not that torque
i had wilhoits grind the cam with 107 LSA@@cuttersperformance
Awesome info ,awesome work 😊
Great video as always! I may be pulling my L31 this winter and doing a 383 stroker with some AFR heads and a Thumpr cam, so I would be selling an LT4 Hotcam with about 3000kms on it, and selling the stock 062 Vortec heads with Beehives and 1.6 roller rockers as well if you'd be interested. I am in Edmonton.
Always looking for heads, shoot me an email pcperformance1@outlook.com
Is this the same Tim that was at the C10 nats in salt lake in June??
Dont use a thumpr cam get a real performance grind that works it will still sound good
Those blow too much torque right out the tailpipe crappy vacuum manners needs lots of intial etc.
@@gordocarbo I am not a concerned about performance, just more of the sound. This truck never sees high rpm. But I will take a look at other options if you have any to recommend?
Very impressive. Had to sun after this
Pat, what’s your thoughts on the Summit 8802 cam, that’s supposed to be an LT4 Hot Cam copy without having to use the 1.6 rockers? On paper it looks very comparable, and for the price = Gold! Any input you can offer? This is the cam I’m going to run in a stock Vortec bottom , like yours, and I have followed ALL your Vortec head vids- so hoping for similar results…… I still have to measure (like you informed me!) the clearance on my full roller aluminum rockers, with the 787 retainers and either the .050, or .030 offset keepers (like you also have taught me!), and make sure it’ll clear, or grind the wings down to fit given the minimums you said I should look for! You are almost a Demi-god on how to make these Vortecs rock!! I called Felpro about using their .015/ .016 steel shims on my 100,000 mile short block and built Vortec heads, and they recommended using spray high tack (Indian head/ permatex) on both sides and torque down before dry. Thoughts?
ALSO! huge question! I lapped my old valves in, but thought- as cheap as new Engine Tech valves were for stock Vortecs, I decided to buy new valves. Question- do I now need to lap the new valves in also, so they seal right, or are new valves fine without lapping?
Everything I’m learning- I’m learning from you, brother!!! THANK YOU!!!
yeah that cam will work just like the LT4 hot cam, the summit cams are great quality.
Careful spraying some of the felpro shims gaskets as they have a rubber film on them that will react and peel when sprayed with copper spray. If it's a bare shim gasket then yes the copper spray is a great idea to prevent water seepage.
Never a bad idea to lap in new stainless valves on old seats.
Cheers! Pat
Damn dude! t hat little vortec ROCKS NOW😮!and for very little $$
Thanks man! Certainly better than I expected
Call in sick to work and get that next video out! lol!
Series is badass.
I have PRW roller rockers as well 1.5 self aligning
i was surprised great biuild
Nice job……they can keep that 604 crate motor……especailly when you can build your own at literally a fraction of the cost…..$8900…..psshh they done bumped their head…you can get an all aluminium LS3 for that kinda money
Haha true! 😄
Yes. If got a ram jet and want to boost it with is type cam. I bought one of the bigger GM lt 1lt 4 cams
Great cheap as chips SBC combo 👍🇦🇺
Your builds are incredible and so details detailed with dyno facts.
thanks for sharing the engine details
Appreciate that! More budget builds done and being dynoed soon!
I’m pulling my L31 out of my Silverado for a project I bought for my son. We are searching for a rowdy cam we can put in it since we likely will be ditching the efi (nobody) willing to help us on a swap harness.
Yeah, wow. I wasn't expecting it to be in the 400s. My guess would have been 375-ish.
Yeah i was quite suprised aswell. I was hoping for 400 but I thought it would be a stretch
Name change 👍👍 . Congratz on 20k !
You're the first to notice! Haha
Awesome video thanks
Well done!
Awesome video 🤙🏼.. I got a question do u have part #s for a whole reseal kit (gaskets) and also for a fully stock everything vortec 350 what is the best cam u can say will work cam only ? I do have intake n carb already
Love this! I built my 98 5.7l on a budget using your videos with beehive springs,retainers, offset keepers, magnum roller rockers,and extreme energy cam(.495/.502). I also added a bbk 80mm throttle body using the oem plenum. My question for you is engine management…im swapping the 4.3 out for this built 5.7. The truck is a 5speed manual. Do i get my computer flashed for my cam set up or do i go aftermarket? Something with a autotune feature maybe?
Your best bet would be to find a good local tuner that could custom tune it for you on a wheel dyno
Cutter is right find someone close to you and see what they recommend if able to use stock style computer you may save some cash is your 5.7 and ls
Nice build
Love it man
From what ive heard the 604 is very undercammed and with a nice bigger cam they pump out around 480hp all day long with just a cam swap, the 604 is a class engine for short track and i believe come sealed, i have a buddy that ran pro stock that was his dads on 1/3 mile banked track and they can run a sealed 604 with a 4bbl but he has a 11:1 350 that dynoed arounf 500hp but they have to use a 2bbl. I thought it was the 604 but its the built 350 thats itting in the corner of his garage collecting dust i said tell you dad to sell that to me for super cheap for my 92c1500... Hasnt happened but as far as i know he just runs the 604. He said oh you dont want it you cant run it on pump gas but i told him with the right cam its doable. He also has a winters quick change, he wants $500 likely get it for like $400 maybe less maybe not but theres no hubs on it just housing and axls poking out and i have zero knowledge of those rear ends as far as set up and id likely end up with way more than $500 in it? But it would be cool as hell being able to change gear ratio in minutes and just having a quick change sitting under a chevy truck. It would probably hold up on the street like i would use it? but ive heard they dont hold up well with a bit of power and some traction on the drag strip.
Would like to see what a tight LSA cam would do. 106-108 say. A la Vizard.
Some different vortec combos with tighter LSAs coming up
Nice build, will be building one similar! Did you just do arp conrods or mains as well.
Just the rods
Great job man! What about an old lazy 400 sbc one day.
There is currently a 400 on the stand! Not sure what direction to go with it though
@@cuttersperformance I wonder how it would perform with vortec heads with the same mods and cam used in this engine.
Im gonna copy your setup for my 87 camaro but I'm gonna use the tpi instead so my hp gonna be lower but my torque gonna be insane for a 350
Awesome
Wow! I thought the Fast burn heads would have made a big difference. Perhaps the cam was perfect for the Vortecs but holds the Fast Burn back?
Do you think this would run with the stock vortec intake? I mean everything you’ve done to the heads but with msd ignition parts paired with upgraded spider injection in the stock intake? With computer tuning of course. 98-02. I could 0411 swap it as well but I think I could get it to run decent with the stock 99 computer. 99 Tahoe Limited is the piece in question.
Have you ever done a test with an Edelbrock Performer Air Gap manifold for Vortec heads
Ive done it with air gap style intakes but haven't tried it with one with a cut divider. Next one I have on the dyno I will try it out
Good video thanks bro
Very good videos you putting out on L31 Vortec SBC. How does this LT4 Hot cam perform from idle to middle range rpm? Does it kick in straight from idle to 5000 rpm? Or does it kick in from like 2000 rpm to the red mark? I have a L31 Vortec SBC I want to swap cam shaft. I am not sure if a LT4 Hot Cam is the right cam shaft for me. I am not in to racing. This is a Truck (1980 Chevrolet C 10) I am using as a dayli driver, sometimes towing and sometimes to do traffic light "racing". I am rarely goin to push it to high rpm range, to 5000 rpm. I am going to use pump gas. I love it when I push down the throttle pedal from idle to the red line and feel my back is pushed to the car seats. Like instant action. Is a LT4 Hot Cam is not the right one for me? I would be grateful for any recommendation. Thanks.
That's very nice,ypu think if pump thr compression up to 11to 1 will be better or possibly? Maybe better rods can be rev higher?I have a gm performance engine 350,357hp 407 torque, I need just a little more,thanks!
What can i do and keep my stock fuel injection? Want to keep cruise control
I'm sure I've missed it somewhere, but did you switch to screw in studs? Do you think this combo would be good for drivability in a street rod? Thanks, love your videos.
It has factory studs. Screw in studs are always a good idea, but not fully necessarily if the open pressure is kept under 300 lbs. This engine would have great drivability 👌
HI, JUST WONDERING WOULD THOSE VORTEC HEADS WITH THE LITTLE PORTING YOU DID BE BETTER THAN THE STOCK 1995 ALUMINUM LT1 HEADS ? I'M HOPING FOR 450 HP FROM STOCK HEADS, WITH A LITTLE BIGGER CAM, RPM AND SPRNGS
the LT1 heads and the Vortec heads flow similar as GM basically used the Lt1 design for the Vortecs
Hey man, I’m going back through your older videos. Would one make similar power utilizing stock fuel injection?
hot
Do you remember where the intake centerline was installed? I think the Hot Cam is ground +3 advance (109 ICL) if installed "straight up".
I’m picking up a set of 305 vortec heads for my 305sbc I’m building I think ima get a 268 comp cam to pair with it and if I want more speed I’ll add a turbocharger kit later to it…
Just built a similar simple build using the stock L31 shortblock. Added flat top pistons, 292/296 Trickflow hyd roller cam and AFR Enforcer heads. Would love to know what kind of HP it makes. Just loaded a video of it running on my channel.
Have you ever used the Vortec heads they sell on Rock Auto? They are ITM and Enginetech brands. They say they are new so I assume they are making their own castings. Would they compare performance-wise to an original GM casting?
I haven't, but I'd love to try a set. Flow test and dyno
I was not aware you were Canadian (shout out). I have a L31 4-bolt in my 97 C2500 that needs replacement. I'm trying to sell the truck as a complete parts truck, but if it doesn't sell by fall/winter, I'm likely going to keep it and drop an engine in it. That being said, it would be interesting to find out how much power you could make with the stock Vortec intake, aftermarket replacement MPFI Spider, and a PCM tune.
Already done that in my 1997 Express van. I used the Lunati Bare Bones 218/228 hotcam and advanced it to a 104 ICL. 1.6 rockers for 0.536 lift. Ported the stock lower manifold. Used a BBK 80mm throttle body and an upper plenum that I had epoxied the gasket groove in and ported to 80mm. Used a 454 throttle body gasket. I built a custom 4" air inlet to the OEM air box and used a LS7 cartridge maf in a 100mm Spectre tube. Then put Thorley Tri-Ys on the stock GM dual 3" to the muffler exhaust. Swapped the muffler for an 8.1L replacement with dual 3" in and single 4" out. 4" tail pipe for an 8.1L 3500HD fit the 97 van perfectly, hangers and all. After I tuned the 0411 in it, the thing made 330 hp and 350 tq at the tires on a Mustang dyno through a 4L85E and GM 9.5" 14-bolt in a 105°F shop with the clutch fan screaming while we were chilling out inside the van with the ac on. My buddy was in the driver seat running the van and dyno while I was in the passenger seat tuning the thing. It ran nearly continuously for 5 hours of pure beating on it. At the end of the session it was really dialed in idle, part throttle, and WFO.
Dyno'd it 3-4 years ago with a truck club I was a member of at the time for the fun of it too. Always get some laughs when a conversion van rolls on the dyno.
th-cam.com/video/F-gjMNvpLzM/w-d-xo.html
I have like the exact set up now I wonder if using the hot cam lift and changing the lsa to 108 and duration 232-242 would gain any power? I’m new to this
Thats abit too much duration for the compression of this engine. But a 228 to 230 @.050 on a 108 would be a nice choice for this engine
What is the part number and the specs for the LT4 hot cam?I'm getting ready to build a vortex 350 and was curious on this set up.
All the info youll want should be in this video
th-cam.com/video/OkQpDNfbeIk/w-d-xo.htmlsi=LX1bLB8NQf6lUO6c
What timing chain are you using in your L31 with roller cam? I'm doing a build following your videos,keep up the good work. Love all the info.
The next video will be going over all the parts used
What was your connecting rod clearance, if you remember? I got around .001 some a little less, but I was measuring with plastigauge.
. 0018 to .0021