Rocket468

I am happy with this build but.. i think something is holding it back. I see others with less cubbies with smaller heads/cams making more power. I think somethings holding it back from another 30-40hp. It made 471 RWHP 470 RWTQ Which should i change out?



Its a 413ci LS2
Trick Flow 225cc heads
GM MLS 6.0 head gaskets
Callies forged steel crank 4.1 stroke
Callies Compstar H-beam rods 6.125
Wiseco forged pistons / Total Seal rings
Compression ratio 10.8:1
Comp cam VRX5 camshaft 236/238 .601/.605 113 LSA
Comp lifters 850-16
Katech timing chain
Yella Terra ultra lites roller rockers 1.7 ratio
Kooks 1 7/8 LT headers w/ 3”HFC
Vigilante 3400 stall converter triple disc
LS2 90mm P&P throttle body by Vengeance Racing
Ported intake
K&N CAI
Fast 57lb/hr LS2 fuel injectors

airforcemanss

iTrader: (23)

fast 96/96 combo and definately a cutout.

btw, what catback are you running?

look up member "alignc5"

Rocket468

Thoughs numbers are thru a cutout. I have a magnaflow catback. I just not to sure if my cam and heads are the best combo. I just think i should be making more power.

99Ls1fever

iTrader: (3)

IMO, I have done a few engine builds my self. I would want the Compression to be higher. 11.5 to 12.0 . On my 408 I had 11.3 and put down 531 n/a. Parts are in my sig, but I would imagine you would need a bigger cam too! 24x/24x 64x 61x size camshaft.

Ron@Vengeance

iTrader: (51)

I made 535/530 in my C5 Z06 413 using TFS 235s/VRX5 camshaft/11.8:1 compression... The heads/cam you have is more than capable of producing the power.

Rocket468

This is jeffs old tbss. I am loving driving this thing I just think its got more in it somewhere. Like there is a weak link somewhere holding some horses back. I just trying to get it ironed out staght before i go with what we talked about and it not perform quite so well. The TFS 235, Custom cam, and the TVS2300 and of course the DevilsOwn alky kit


For gigles I was going to make a 4" intake for it i think the kn filter kit might be choking it. Do you think the ported tb and manifold could be holding it back?

Ron@Vengeance

iTrader: (51)

Truck needs DMH Dual Electric cutouts and it would be set. That 470RWHP you are making is thru an unlocked 3600 and a TBSS drivetrain spinning heavy *** aftermarket wheels. That combo would produce 530rwhp in an M6 F Body

airforcemanss

iTrader: (23)

the ls6 intake from what ive seen and read is better than the ls2. so put that in perspective with awesome heads with a good camshaft the intake/tb fast 96 combo is what you should look into. call ron

Rocket468

Yea, i know its pretty heavy I need to weight it Like the trailer hitch, maybe some differnt rims if i can find some lighter ones that look decent for track time. I already put down better times at my local track

Already talked to my guy at source interlink about car craft. So i want to do the stuff we talked about first.

Rocket468

Just an update, I picked up 12hp on the dyno ditching the kn intake system this is with no other changes.