Inliners International Forums General Discussion Engines Factory Torq and Horsepower GMC Six 248-270-302?

I found some info at Old GMC Trucks.com. You'll have to do a lot of looking thru their pages and tech info. I'll do some more looking to see what I can find. We have quite a few old tech books, motor manuals at the shop.

228 cid
HP: 100 @ 3400 rpm
TQ: 182 @ 1200-2000 rpm

248 cid
HP: 114 @ 3600 rpm (125 HP also listed for later models)
TQ: 202 @ 3400

Ron