Also, a slightly smaller combustion chamber, good for maybe an extra half point in C.R.; 8.2:1 vs. 7.7:1 or so. Not a game changer, but if you need a valve job, you might consider swapping heads at the same time. Later, *****6
Yup, bigger valves and smaller chamber- they were/are the popular choice for making more power in a Chevy 6.
The Jalopy Journal
