Quote:

I ordered some yesterday off of Summit, Sealed Power 238P, They have a 2.000 Compression Height, but came to 9.85:1 compression with my 516 closed chamber heads. I measured the heads and came up with 69 cc's, and Summit has a compression calculator that works really well. What year of 413?


It's a 62 motor in a 62 300 convertible,