wr1970

This thread is for calculators, here's a link I use often. Please add calculators that you find helpful.

http://www.wallaceracing.com/Calculators.htm

71rocket

Cool, thanks

74sprint

For the life of me I could not find measurements of the Olds BB combustion chambers. Almost all of the BBO combustion chambers are the same size and are 80cc. These drawings are of the actual stock 'G' & 'J' heads but, the distance between the valves is the same for all heads big and small. The distance between valves is 2.0" which is also the distance between rocker bolts/studs and push rods. Pontiacs also have a 2.0" spacing so you can use Pontiac guide plates, even the stock ones, just cut the 2 cylinders apart, the plates do 2 cylinders. The 'J' heads distance varies a lot, from 1.987" to 2.010" all on the same head, wow. The combustion chamber with the larger valves is for my new build. Any questions pm me and I'll try to answer them.


Ray

Letsrunum

Thank you for sharing!