Never, and I mean NEVER, attempt to put a Ford engine into a GMC. The GMC gods will haunt you forever! Really, the early 80s 5.0 engines are pretty weak due to smog and fuel mileage concerns of the era. If you really want a cool truck, find a GMC inline engine. As a matter of fact, you can still have a 5.0L by putting a GMC 302 inline-6 in your truck. Also, the inline-6 will have so much more torque than the short-stroked Ford V-8.

Phil

Never hold your farts in. They travel up your spine and into your brain...that is where crappy ideas come from.