After talking to James Larrowe about a 261 he has, he told me that the 235 head will raise the compression 1/2 a point to around 7.75:1. This was a common swap on trucks used at higher altitudes.


'45 Ford PU
66 Valiant wagon, leaning tower of power.
79 Chevy C10 w/250
02 PT Cruiser Convertable