Yes, there ARE early castings you want to stay away from. I have a set here. They are very prone to cracking around the head bolt bosses, particuarily on the outside bolt holes. The later castings have more meat and "bracing" in this area.


RIP Monte Smith

Your work is a reflection of yourself, autograph it with quality.

WD for Diamond Pistons,Sidewinder cylinder heads, Wiseco, K1 rods and cranks,BAM lifters, Morel lifters, Molnar Technologies, Harland Sharp, Pro Gear, Cometic, King Engine Bearings and many others.