randall 32

iTrader: (3)

Im going to build a 402 stroker from ls2 block. I'v been planning to stay na with some afr 230 heads. But also thought about installing a F1A kit with forged internals and I have a set of AFR 210's I could use or a set of 317 heads I have and still use stock intake and throttle body. Any idea what kind of # it would make?

N2OBaby

I don't know for sure but my guess is 580-600RWHP.

T/A KID

iTrader: (12)

All depends on blower speed

randall 32

iTrader: (3)

Are the heads mentioned to small

T/A KID

iTrader: (12)

Not at all they will work great

TSterling

iTrader: (9)

I'd be awful depressed with that. My stock block ls1 and a P1 threw down 601whp.

To the OP

Properly tuned with supporting fuel 700+ isn't out of reach. Keep the blower speed in check, they don't like being maxed all the time,

eb02z06

iTrader: (18)

It will make a little over 900, 900 torque too if you spin faster!

Just keep the compression up and don't be afraid to give it a cam.

randall 32

iTrader: (3)

Thanks for the replies, what are your specs, cam , comp, pullies, boost?

eb02z06

iTrader: (18)

I was puillied to max out at 6K, 8" crank, 3.5" pulley. compression 10.1, cam was a 244/250 112.

helga203

Love that the powers there by 6k. Nice
I know these engines can spin to 7k but with a set up like that why. Dame that cam hits that low very nice. What stage would that be of yours III, IV???? Abouts where is lift low .600's or high .500's??? Just curious

eb02z06

iTrader: (18)

That's from about 6 years ago buddy, cam was .600/.600.

That was one of the first cams I was trying out. It worked great but had too much overlap for a daily driver.

My new stuff is much more effecient.