Nice build and dyno! Very close spwc wise to what I am building myself. Which is an 11:1 383 out of a Vortec truck engine. Assault racing 205cc head castings ported by Lloyd Elliot. A 215/224 @ .050" custom grind Comp cam with 1.7 rockers for 0.578" lift. Running a marine dual plane MPFI intake and Thorley Tri-Y headers. Feel it should make close to 500 hp and a little over 500 ft/lbs. Running it with a later model 24x PCM and EFI connection reluctor. All stuffed into my 1997 G3500 Express van backed to a 4L80E and 10.5" 14-bolt.
@@jrod264winmag yes .578 is a healthy lift number. But for a lt1 383 that cam has very small duration. Its all subjective but generally ppl like at least a 230/236 duration cam with a 383 lt1. And thats considered a mild street cam.
@@chevycamaro4323 My engine builder builds some mean street sbc engines with 218/228 cams with 510/525 lift. I've seen them on his dyno. People over cam street engines all the time. I hope you know this.
@@jrod264winmag lol trust me i know this ! Your mentioned 218/228 duration cam is comparable to the classic hotcam for lt1s. Which is perfectly streetable for a 350ci lt1 with stock heads. This guy has a 383 with big flowing heads. Im very seasoned with the lt1 platform. But sure throw a 215/224 cam in a big headed 383 if you want all low-mid range power. My LE 215/224 .533 lift cam peaks around 5800 rpm on my stock headed 350 lt1. Builds torque as low as 1200 rpm. So i would consider it tiny for a 383. And im actually in the process of getting a splayed 4 bolt fully forged 383 build with 195cc afr heads and will be going with a 230/234 .580 lift cam and even this cam will peak under 6000 rpm and will be mild in my 383. Good street cam. I hate over cammed cars, no low end torque !
I’m getting a Golen 383 short block assembly eventually. It has forged internals and it will be bad ass!!! My 350 LT1 will be insane after the short block!
@@ElteeMullet In fairness he doesn't state what heads he has. Could be stock heads, could be ported stock heads, could be AFRs.....etc. He just said he's getting a 383 short block, and short blocks don't make the power, the top end does.
Don't forget, its on an engine dyno with no accessories attached. So the numbers report much higher. That engine probably makes in the 380-400whp range. Thats still not a bad number for a small cam engine.
I have a 93 C4 with a built 383, AFR 195 heads, Comp Cams 224/230 lt1 grind, 24x reluctor set up with coil on plug + Holley ECU, forged h beam rods, forged Wiseco pistons, 1.6 rollers, zero decked, 11.2-1 pump gas, 425whp @ 6k, 434 wftlb @ 4k with at least 365 from 2K to 6K. That is over 500 crank hp but it was an expensive build. The throttle response is immediate. It is ultimately going to be a dedicated track car...right now it is just street and autoX whenever that starts back up. This summer I'm going for another tune (running a bit rich now) and will run it up to 6500.
What's the seat timing of the comp cam, and what sort of average power did it do on the dyno. Very similar to my build. Haven't dynoed yet. Engine is going in the car as we speak at a buddies shop.
@@justingray3236 Sorry I missed your question. I'm very close to having my engine start up on a homemade engine stand. I have to send my Torqhead ecu out to get a base tune. Howell wiring harness should be here this week. Also gonna order and test a new Aeromotive stealth 2 fuel tank (93-97 Camaro style) for the fuel source for the engine stand. Also need -AN hoses since my stock fuel rails have been converted to connect AN fittings. Also need a new adjustable fuel pressure regulator. For my Camaro my stage 3 T56 is in. My 12 bolt rear and full BMR suspension is in. Just need a clutch. Other than those items and the every day nuts, bolts, and hoses, I'll be ready soon this year. Probably end of summer I'll be dyno ready...
Also gonna order a 2,000 dollar cooling setup for a 93-97 Z28 from Wizard Radiators and Performance. Also gonna order up a scanning tool from HP Tuners to data log with my air/fuel ratio gauges.
@@cuzz63 Hell No. Everythings been closed and once everybody opens up again, there's gonna be a back log so I don't expect anything getting done until the Fall at the earliest.
That small cam not doing it any justice, he could just about reach those numbers with a h/c package with a stock bore. A Le2 or custom grind cam would easily gain it another 40-60 hp. Maybe he got the small cam for emissions I'm guessing, still a good pull though💪💪💪
I think the 98 Tahoe has a 5.7 Gen2 vortec motor. You can get inexpensive SBC heads and a CAM. Not worth swapping to a LT1 unless you already have a LT1 to put in.
Im currently building an LT1 383 stroker. I was told that LE2 heads and a CC503 cam wasn’t enough for it. I guess that was a lie. Look like I need to find a new mechanic. 😆
It is 3 .004" feeler gauges ------ At 12 O'clock, 4 O'clock and 8 O'clock ( between the crank and the seal housing nubs)...then tighten and double check. A sleeve would be nice but I have no machining skills.
