Dad has a GMC flatbed with serial numbers 353-24P-31229 on it. Any idea on the numbers guys? What engine should be in the truck originally? It has been changed and it is a 248. These are the only numbers stamped on the block. It has 115 horse @ 3400 R.P.M. on the door plate. Maximum gross is 16000 pounds.

Mud, here it is, 35324P31229. 353- 350 series, 161 inch wb; 24- 248 engine; P- built in Pontiac; 31229- chassis serial number, coinsides with model year 1953. This is also an American built GMC not Canadian.

Ok got you Biggreen. Thanks again, you're always a big help.