pharmd

iTrader: (4)

My TBSS (H/C + bolt-on), just let go (spun rod bearing). We ran it with a cam really advanced it ran 12.39 @ 107, after retarding the cam ~5 deg, we were able to run 4-5 deg more timing, the thing WOKE UP. Unfortunately we never got to validate my butt dyno....I raced my own, 335i, and killed it from a dig, from a 60 kick, giving him the hit, I came around him and put 3-4 cars to 120-130. So I believe the H/C set up would have run 12.1x @ 110-112.

So now that we have to get into the motor, I'm wanting to do a larger CI...for cost we are thinking 402 using my block, however, doing a LS3 based shortblock is not out of the question either (like 416 or something)...

Ideally, our goal would be to trap 120. I can re-use my heads (AI CNC 243's) or I can do TFS, or CNC LS3...I don't want to go stupid big on the cam, I'm thinking high 23x's/low 24x's would be max...my stall will likely end up at 4100rpm. The intake is the other issue, I can port the truck intake, do a FAST, or carb style...if I do LS3 I could do FAST 102...

We are thinking I need AT LEAST 525awhp to have a shot at 120mph...

What's the best we can expect NA power/ET/mph? What combo will that be with?

Thanks to anyone that provides input.

Brad

white lightning SS

iTrader: (3)

I would recommend building a 6.2 with the L92's ported those heads are leaps and bounds above the 243's. That cam and stall sound allright but I would prefer torque lower in the rpm band and look for e.t.'s not so much dyno hp and trap speed.