Originally Posted by dirtychevy99

but what is being over looked it think is your springs i wouldnt do anything until i got a set of dual springs just talking from experiance there just safe and your talking about putting some power out

Originally Posted by LMSeven

Valve springs aren't effected by N20 at all.

Originally Posted by whitegmc2002

A 500 shot on a stock bottom end i hope that was a joke.

Originally Posted by nastychevelle

so i should do something like this

5.3
706 heads cut for ls6 valves valves (basically just cutting the intake for a 2" instead of 1.89")
arp rod bolts
arp head studs
LS1 intake,PP billet fuel rails, and ported TB
218/224 .550/.550 114
ls6 springs
tsp pushrods
LT's
Nitro Dave's 78mm plate
175 shot


and it will be SD tuned for e85

heres the HP numbers i came up with on each of my shots

175 shot should but me around 445hp to the wheels (556FWHP x .8 to acount for 20% drivetrain loss according to dynosim rounded up)


200 shot - 470hp (586FWHP x .8 to acount for 20% drivetrain loss according to dynosim rounded up)

250 shot - 510hp (636FWHP x .8 to acount for 20% drivetrain loss according to dynosim rounded up)

Originally Posted by sharky05

I'd leave the heads alone. I'm not to sure about this, but the added cylinder pressure added by the nitrous won't like the added compression. but thats just what I heard others will chime in.

Originally Posted by LMSeven

IMO progressive controllers are easier on parts.

Originally Posted by TXsilverado

easier on the drivetrain but harder on the solenoids....id rather cook a solenoid over a motor/tranny or rear end myself so i run progressive.

Originally Posted by TXsilverado

easier on the drivetrain but harder on the solenoids....id rather cook a solenoid over a motor/tranny or rear end myself so i run progressive.