NegadivOne

I am building a 331 stroker, gt40p heads, e cam, with about 9 or 9.5:1 CR. It is going to be NA for now but eventually I want to add a supercharger. Should I go with 24 or 30 lb injectors?

stanglx2002

24's thats what i have in my stroker the 30's are to big i ran rich

Quik

you can run with 30s with a proper tuned setup

but for that setup go 24s

vfast

with a tweecer ,which you'll need if you use a S/C use can change the pulse of the injectors and use the 30's

luckythirteen13

id run the 30's with a dyno tune

schwindty

Thats alot of COmpression for charged, if you want to run a fair amount of boost lower compression is better dude

vfast

it is..I run flat tops about 9.0 with 15 psi..I'd say I'm close to the block cracking edge

NegadivOne

Yeah its a bit steep but if i do add a supercharger it will be in 2-3 years after college. Even then i would probably only run maybe 8 lbs of boost. I dont want the compression so low that it will suck for the whole time its NA.

silver91gt

wow, 15lbs of boost, what kind of hp you making vfast?

Quik

9.0 is fine for compression. its actually stock. hell 9.5 is fine

you guys are so worried about little things. yes ideal CR is around 8 to 8.5 but up to 10.0 works

with a tune its safe. now if you tune a car for peak numbers it wont last, if you tune it for longivity it will last