383lt1impala

iTrader: (33)

Well I was planning on doing a na/nitrous build on my 383 ls1 impala project. And I have some t62 garrets that I want to put into use. And I was wondering about what boost or hp level are the 6th bolts needed? Those turbos should boost about 1100hp at the crank. And that's what hp I would like to be at. also my ls1 block is a 3.9 bore is that safe to boost? And I have a iron 6.0 block here also should I use that instead? I have an eagle forged crank and rods. I'm sure those will do. Also I have an ms4 cam with a 112 lsa should I change to a wider lsa? Or just get a custom spec cam? Thanks for any useful imput.

elias_799

iTrader: (8)

i would use the 6 litre iron instead of the ls1 you got. cylinder walls would be thicker.

and i personally would get a cam with higher lsa

Super Slow SS

iTrader: (9)

+1, def. a different cam, maybe even a custom grind looking at that kind of power. There is a lot missing from the equation though, heads for one?

383lt1impala

iTrader: (33)

I have a set of ported 806s about under 300cfm@ .600 my real question is at what point do I need the 6 bolts?