Quote:
Originally Posted by chewychevy67
327s in these trucks in 67 all had the thermostat bypass. 283 did not. Easy way to tell if it's the original engine still in the truck. They were definitely available in Canada. That is a crazy nice truck for 67. Nice find
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That’s good to know, my 67 C20 had the 327 with thermostat bypass. I was wondering if GMC did and if 1/2 tons did to