Originally posted by techinspector1
o.k., here's how I see the static c.r. of the combination.
cylinder cc's 784...(.7854 x 4.03 x 4.03 x 3.75 x 16.387)
chamber cc's 72
gasket cc's...about 9
piston valve relief cc's....about 4

Add all of 'em up and you get 869 cc's. Divide that by the compressed cc's (chamber, gasket and reliefs) and you get 10.22:1.

Now there are a couple of questions.
1. can you run 10.22:1 on pump gas with iron heads? Yes, with a good tight squish.
2. Will you be able to tolerate the long cam that will be required at this level of compression? (low vacuum, little bottom end power)
TECH,
something's nt right that piston part no. says 10.4:1 w/64cc head and 5.7 rod