Im trying to figure out what I can get away with running for fuel. Ive calculated my dcr using this calculator:
It gives me a dcr of 7.80:1. From what I can tell I should be safe running on 92 octane. But, would probably run a 50/50 mix of 92/110. The engine is a mild 476, 781's with 219/188 valves and some port work. I'm guessing the heads to be in the 116cc range for combustion chambers but, have read of some cc'ing up to 120cc's.
Pistons:
www.northernautoparts.com
Cam:
These are the #'s I used in the calculator, top to bottom
8
4.350
4
6.135
10.7
73
0
1020
Basically looking for someone to double check my #'s and either tell me its all good or let me know which route to take on fuel.
Thanks in advance, and sorry for the long post.
Wallace Racing: Dynamic Compression Ratio Calculator
www.wallaceracing.com
Pistons:

Sealed Power Hypereutectic .340 Dome 2 Valve Reliefs Piston from Northern Auto Parts
Sealed Power Hypereutectic .340 Dome 2 Valve Reliefs Piston
These are the #'s I used in the calculator, top to bottom
8
4.350
4
6.135
10.7
73
0
1020
Basically looking for someone to double check my #'s and either tell me its all good or let me know which route to take on fuel.
Thanks in advance, and sorry for the long post.
Last edited by a moderator: