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L98 383 Stroker build 10 psi

6418 Views 20 Replies 7 Participants Last post by  S281
Hey so this is my first build and I'm trying to do it right the first time.
I'm building a 383 stroker for my 1986 Z28. Heres what I have

L98 block bored .030 over
Stroker assembly from
crank stroke 3.75
5.7 forged rods
12cc dished pistons
splayed main caps
novi 1000 with 10-11lbs pulley
1.6 crane gold rockers
hardened pushrods (stock length)

So with 64cc chambers the compression ratio should be 10.2:1 :yikes:

I know thats way too high to run 10psi so I want to know what size chambers should I be looking for 68cc, 72cc or..... size runners 190cc or 210cc?

Also what size cam? I want it to be a hydraulic roller cam.

I was thinking and airgap intake

btw it is a carbed motor. Unsure on carb setup aswell.

All help would be really appreciated. :beer:
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With those internals you should be good with that compression, if you're really worried throw it on E85 and back off the timing.
Lol what's going on bro. I don't know much about carb setups or LT based motors, but from what I see on LS motors you should be able to do quite a bit bigger cam than that, and I would definitely go bigger just because you're doing a blower setup. On an equivalent LS motor with a similar setup I'd be going with something like a 228r which is 228/228 588/588 and probably go with a 110 or 112 lobe separation angle. You'd get a raunchy as hell idle, and the lower LSA you'd still have good bottom end, and the cam is big enough that you wouldn't be giving up much top end, but what you do give up will be made up for tenfold by the blower.
How does the cam have anything to do with boost on a blower? It's belt driven and from everything I've seen on places like LS1tech you want a good sized cam with a low LSA for a blower. Honest question
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