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37special
Guest
I am looking for someone familiar with the 248 cylinder head to do some head work and porting. I believe that the intake valves can be enlarged slightly by cutting down the diameter of some big block chevy exhaust valves and installing narrow, hardened seats. I can have this done locally but would like someone with experience to port the head so that I get better flow w/o sacrificing reliability. I've heard that the port walls are somewhat thin so I'm concerned that a novice may go too far and the head will crack.