| Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | GMC never had a 235, 228 was the smallest, full oil pressure engine. SN stamped on machined pad behind distributor starts with displacement, I. e. 228xxxx. GMC should bolt right up to your Chevy bell housing, etc. GMC engines up to 302 will all look the same.
Ed
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
| 
