I was at the Winter nationals that year and was amazed at Glidden's small block. I saw both of his motors. One was declared to be 337 ci, the other was a little different. Both or at least one of them used cast iron rockers. The lift and duration on the cam shaft seemed to me be very big. Exhaust manifolds were big, at least 2".

Mostly, the motors were pretty plain, but running, they were something else. Could not tell what had been done to the W2 cylinder heads.

Heard he'd straightened the push rod angles.

Spoke with Dave Koffel that day. He said that they tested a 318-3 motor to over 9000 RPM with no ill affects. I think he said all they did was change the compression ratio and use a larger oil pan. Can't recall if they altered the oiling to the lifters. Who ever knew.