New To Forum: 72' GMC Jimmy with a 302 'Jimmy' GMC Inline 6?

[averagejimmie]

Stay away from the 302 for your application. The term you are looking for is "Stovebolt." It's an old school engine. That engine has the old draft tube over the modern (and less polluting) pcv valve GMC/Chevrolet 250 & 292 family of motors. You will get more from these latter two motors in the terms of real-world useability and cheaper horsepower. They are easier to maintain, modern parts swap capability, daily driving, etc.

The direct benefits for the more modern 250/292 are: Lighter weight engine; modern internals, pistons, cam, rockers, etc.; HEI ignition is an easy and clean swap; no swapping from generator to alternator; modern spin-on oil filter and it is period correct for your truck. Check out Stovebolt.com and stoveboltengineco.com.