I wouldn't call it low compression it's probably about 9 and 1/2 or 9.3... 408 with forged dished Pistons.. going in my daily Power Wagon...
If you read through this straight up I had it at about 110.5 and then did four degrees advance and I'm at 106.5..
Again I'll talk to Ken in the morning and see where he wants it...
Ok and what heads?