I have a 99 Camaro with a all forged 402 ported prc heads 10-1 compression with 36 lb injectors long tubes with stock ls1 I take manifold and throttle body and it made 434 hp to the wheels. So I put a 92mm intake and throttle body and bigger injectors and it still makes 434hp to the wheels does this seem right to anyone?

 

Same dyno? Same timing and AFR?

 

Makes perfect sense, if that stuff you worked on isn't The Bottleneck.

These aren't Honduhz. We don't go to the store and buy stuff and "add" HP. This is the real world. We gain power by finding The Bottleneck and uncorking it.

Maybe yours is the exhaust? the tune? the valve train? the ... something other than int, TB, & injectors?

Did it go any faster at the track? What did the curve look like? how did it change? (not just the peak #; THE CURVE)

 

Yes same dyno afr and timing

 

I haven't made it to the track yet but it feels like it has a lot more power

 

A 402 should definitely benefit quite a bit from a Fast 92 over a LS1 intake. I agree about taking it to the track though. If it traps a little better then it is in fact making more power

 

Cam, exhaust, intake, auto or standard.... details????


my build: iron 402, trick flow 215 heads, 238/242 .605/.610 @ 112 lsa cam, fast 92 Intake, pacesetter headers with hooker aerochamber muffler, slp lid. Factory maf. Made 478ish cant remember exactly. Thats through a standard transmission and m9 rear end. Compression was mid to high nine. I dont know about your heads so cant speculate on power

 

Cathedral port heads might be a bottleneck on a 402, depending on what heads you have.

 

Prc 2.5 ls 317 Heads, comp cam 233 239 duration lift 595 605 122 , iron block 402 forged lunati crank and rods Weisco piston, 92 mm intake and throttle body , 65lb injectors

 

The 10:1 compression is a bit low if staying N/A. The cam seems a little small. 233/239 on a 122, in a 402, is pretty tame. -8 degrees of overlap. I bet it runs good & makes great torque. If you could post a pic of the dyno graph. Be cool to see. I would definitely think a Fast 92/92 setup would make more power than a LS1 intake. On stock motors they do & you're not stock. What lid MAF do you have on it?

 

Volant intake I will get a dyno graph tomorrow

 

That LS1 intake is killing some power. Probably gain 30 hp with a Fast 92.