Truck now has a 54 Chevy 235 engine which I got running briefly, like to rebuild it as well. But rather put the 248 back into it as it looks kind of funny with Chevy engine in a GMC truck. Cheap "fix" is to pretend your truck was built in Canada. Canadian GMCs of your vintage were equipped with Chevy 6 cylinder engines.
'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12
'52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.
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