Missed on this combo?

Cudafever said

You said it didn't like above 30* i assume that you tested this on the dyno? Is it possible you needed better octane of fuel to get above 30* Also what altitude do you live at, or the dyno was at.
My 408 12.75:1 compression with RHS 2.02 head with a tight Quench, wants 36 total and 22 initial @ 6600 feet with racing fuel.
Is it possible that you were getting into destination and didn't like more timing? aka need a higher octane fuel...........
Even with a super efficient combustion chamber,and i don't think you have one. 30* total seems way low.
Alu head tend to want more timing, than a cast iron head. RHS head are cast iron.

Click to expand...

We're around 1000 ft above here. And the fuel issue is just another thing I was thinking about. Race gas and 33-35 degrees... right now I'm questioning everything.

Can't believe I forgot to check cranking compression. Of all things....and I can't believe my machinist didn't mention it to me. I think we were both just a bit shocked.

I can get back on the dyno pretty cheap. Might be a good idea before I started tearing things apart. If this thing had made 580 with a little more grunt down low, I wouldn't even have questioned it.

Might throw it back on the stand and check valve events. Another thing I shoulda done. Degreed it and just figured Bullet can't make a mistake so called it done.