chetmo

iTrader: (10)

OK so i built this car with nitrous in mind, and i love the juice, its addicting, but im debating on going the boost route, after much searching I have these Questions:

first (firebird 347 ls1, 10.4 CR with .04 gasket, 3600 stall built tranny, 3.73 rearend 10 bolt)

car made 414 rwhp Na, and decent 500's on a small shot

A.my concerns, If i can get the CR down to 10-1 what realistic boost numbers can I run with a little P1 blower?

B.my cam is a 232 234 598/601 112, how bad does this need to be changed

C.I have 42.5 lb injectors, and am seeing 73ish% ICD

D. im trying to get into the low-mid 500 hp range, close to my n20 numbers

TheBlurLS1

iTrader: (8)

You might be able to leave the CR and put on a meth kit. Spraying in a bunch of meth might save you some dough on a fuel system too.

You could buy the fail safe that Snow sells and wire it into a timing controller to yank a bunch of timing and light up a warning should the meth fail.

chetmo

iTrader: (10)

my buddy has meth on his kenne bell mustang, it lights up when he is below a half a tank, really nice setup, meth is what 3-400 bucks?

chetmo

iTrader: (10)

forgot to add:

fuel system: walbro 255lph, return style fuel system, 97-98 vette fuel rail, 42.5# injectors

98Camarod

iTrader: (43)

I've got the 42.5 injectors also. I'm running 99% with my 7lb spring and n/a it was right around 70%.

chetmo

iTrader: (10)

thanks, so i could benefit from a bigger injector, thicker headgasket, possibly different cam.

cablebandit

iTrader: (37)

my 408 is 10.4:1 c/r...cam is 228/234 113+1
93 and meth kit for the street.

chetmo

iTrader: (10)

thats real similiar to my setup on the 347

Johnv

Put a set of 317 truck heads on, get some 60 # injectors and you will be good to go.

chetmo

iTrader: (10)

seems they can be found decently cheap, how is the flow on them? compared to my patriot stage 2's?

chetmo

iTrader: (10)

any other input? do you guys think I would be fine with a P1 since im doing a low boost application <10 lbs

98Camarod

iTrader: (43)

I'd sell the stage 2 heads for a recoup and put the 317's on. Then their would definitely be no problem with less than 10lbs

ls1290

iTrader: (20)

A) A set of 317or 6.0L heads will safely drop the compression level to 9.6:1. No need to screw around with a thicker head gasket. A P1SC or D1SC will safely run on that compression level.

B) Not the most optimal, but the cam should make some good power.

C) You will be pushing 42# injectors, so get some bigger ones.

D) You should be able to break the 500 rwhp mark with a P1SC and easily break the 500 rwhp mark with a D1SC.