Picked up some XS parts from an old hill climber last summer and got this 72 head.
Someone had been in there pretty heavy. Short of bolting it on an engine to find out, what are the odds it would be an improvement? I also got a new 256 750 big bore kit with pistons rings and wrist pins from him. He claimed that under racing use thesmaller larger early wrist pins would eventually distort the thin small end of the rod. They reduced the size of the wrist pin with the 447 motors leaving more meat around the pin on the rod end. I have a 72 bottom end to put this stuff on.
The last pic is an unported intake from an 81 for comparison.
Someone had been in there pretty heavy. Short of bolting it on an engine to find out, what are the odds it would be an improvement? I also got a new 256 750 big bore kit with pistons rings and wrist pins from him. He claimed that under racing use the
The last pic is an unported intake from an 81 for comparison.
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