235 L6 pin: .865"
261 L6 pin: .927"
265 SBC pin: .927"
GMC & BBC pin: .990"
The V8 pistons are wayyy too short, big compression loss and no quench.
Shimming the rocker shaft up after milling keeps the pushrod angle correct (if it was correct before), but unless the intake seat is sunk the rocker geo to the stem will be wrong.
