Hi,

I have a 383 stroker with forged internals, aluminum heads, holley SR & 950pro ECU the engine is just a hair under 10.1 compression I'm going to be installing a procharger with intercooler and wanted to know with the compression I have how much boost can I run and still be on the safe side? I was told 9lb would be "ok" would like some advice

thanks

 

Procharger says 15#'s with 9.5:1 compression, you have forged internals which is a plus

 

altitude?
camshaft?
head style?

I would like 6-9psi is "safe". I think even intercooled, 15psi on 10:1 CR is wayyy too much, even with 91 octane.
But that's why new driven sprokets are so cheap, you just swap to get the right boost level.

 

Heres the fully details on the engine, altitude not sure? Illinois is that gives you any thing?

Full MSD Ignition AL6, Pro Billet 8366 dizzy, coil & wires


Block: 350 bored over .030, eagle forged stroker crank, H beam 5.7 rods, SRP -16cc dish pistons 9.8:1 Compression



Heads: Dart pro 1 aluminum heads, 200cc, 64cc chamber, 2.02/1.60 3 angle valves, gasket matched to flet-pro 1405 and to the Steath Ram Heartland sharp 1.5 roller rockers



Cam: Comp Cam XR269HR-12

 

I think 6-9psi is pushing it.
That's 10:1 with a very tame cam. Even intercooled, you won't get much boost.

 

what would you safe boost level for my setup ? I was told being its all forged internals 9 would be safe but I dont know so i'm looking for input

thanks

Robert

 

dude 10#'s should be safe, i'm pushing 14# on a stock bottom end 9.5:1 305 short block, as long as your tune is good you should be fine.

 

Cam is too small.

8-10psi if you change the cam, and have proper quench.

That cam is going to put the DCR too high. You'll end up having to lock your advance in around 22 degrees.


-- Joe

 

I would think it would be fine. LT1 kits make around 6-8 psi and they're 10:1. Run a bad tune and too much timing and it'll surely detonate though.