Posted 3/2/2021 12:45 (#8868159 - in reply to #8867952) Subject: RE: Farmall C pulling tractor
1 hour east of ol cheyenne
They used to over bore the M engine and install 425 Buick nailhead pistons in them then balance the whole assembly was in the 1970s. 4 and 5/16" bore or +.030 or +.060 .