| Cruising in the Passing Lane Joined: Oct 2003 Posts: 5,152 | Dad I'd bet much of the difference in our experiences is your 4.56 gears compared to my 3.08s. My motor isn't spinning as fast at 70 as yours does at 50.
Is it a Canadian GMC or a replacement motor? My '52 GMC came with a 228.
1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more...
It's true. I really don't do anything but browse the Internet looking for trouble... | 
