| Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | Your 228 might have a small flywheel, which is too small for a 302, so it might be a good time to see what flywheel you have. Chevy flywheels can be drilled in alternate locations with GMC bolt pattern. Make sure to check ring gear teeth, especially if you might be thinking about 12 volts.
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.
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