My Demon ran 5.0/150 when Mike was racing it, or so I was told. It had a 4.500 bore x 3.85 stroke 499 KB/B1 with relocated 2.44 intakes, 1.90 ex and huge ports. Had a fogger and a 300 HP plate, not sure which he was hitting first but the 2nd stage came on with a timer to coincide with the wheels coming down. Adger Smith said it was making 1250 HP and the car weighed 3250 with me in it. They had the heads milled to 47cc and with flattop pistons and o-rings, it was about 16-1.

I got a 6.32 / 111 on the motor at 3250 if that gives you any idea. I need it to go 5.0 @ 150 on 315 DRs to be competitive locally here in KOS, and be able to still drive it on the backroads.