Did your cam guy tell you where he'd expect the motor to peak? I know your cam specs are buried somewhere in this thread, but IIRC it was 215/224 with a 112LSA right?
With a 224/228 111LSA cam on my 302, the motor peaked at around 5300rpm. That was with a small set of heads and a cobra intake, though. With a somewhat similarly sized 228/224 (114LSA I think) on my 331 it actually peaked about 1000 rpm higher, which I attribute to the big flowing AFR205s and Box upper TFS-R intake.
The following is entirely made up of loose-logic based on my old builds... chalk it up as speculation and nothing more:
Your cams intake duration is considerably smaller than either of those cams, so that should bring the powerband down a little. But your heads and intake should breath similarly to the ones on my 331, which will bring it back up. The smaller displacement would shift the powerband up in rpm (or down in power at the same rpm), too. My guess is your engine's theoretical peak will be somewhere north of 6000 rpm. Maybe 6500-6600 RPM? I've never tried to estimate a power peak on a motor before, but that's my best guess. If that's right, then I think you're going to make 335-355rwhp (SAE, dynojet) at 6000 RPM. Is that how high you want to run it on the dyno?
That is phenominal, bro! Just about the best looking street 302 I've seen. Your theory paid off, and hopefully paves the way for future combos.
I'm ****in' stoked! You built a monster. Makes me happy I went 205cc on my 331 instead of chickening out on 185s. I'm sorry I ever wasted time on AFR165s on my old 302. Just keep datalogging on the street and at the track. You might find that the AFR changes a bit while the car is actually moving and under real load. Chances are you've made a noticeable improvement.
I hereby renounce my incorrect estimation and revert back to the one I made when I knew more about foxes:
That's pretty impressive man. Do you recall what your heads flowed? Congrads! Can't wait to see those things on a 351 based motor.
Joe
Did you go through the build thread, joe? I think it's buried in there somewhere. I seem to recall Nik giving up the numbers at some point.
Um... I guess so. I think the new guess was based solely off of your trap speed, but I expect that'll be coming up pretty nicely. I would be interested to know what the car weighs. Seems like you ought to be going 113-115 mph through the traps. I think those 3.73s should be fine to get you out of the hole and giving you room for more in the future.Thanks man! That's funny that you had predicted so close before... Were you starting to lose faith?
time for real gears (4.10-4.56) and traction. I think it could trap 114-115mph with a few simple things.
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