Chevy 235, 261, and 265 V8 engine piston skirt clearance from a 1955 2nd Series Shop manual is specified as 0.0005-0.0011 inches. Quite a difference from 0.0037. I would think that GMC 270's would be similar to the engines mentioned from '55.


Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.