Ran a '70 1/2 ton with a 292/4 speed combo. Miss that truck to this day, but here is the info about it you want to know.
Intake: I ran both the 4 bbl and a 3-1bbl manifold; the 3-1 bbl was a PITA to set up, but had MUCH BETTER performance and took care of a fuel distribution problem.
Exhaust: Ran a handmade set of headers with a dual exhaust. The engine sounded nice at idle, but when you got the RPM up it just sounded wicked.
The cam, heads, and rest of the engine was completely stock except for dress up items. This combo would get 20 mpg as long as I kept under 60 mph. If I was to do it again, I would swap in a Tremac 5 speed overdrive trans.
And yes, those 3 1bbls worked great in Oregon winters, and boy, did I get compliments from people for keeping the 6 and those 3 carbs.
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Old school rap music: a dual exhausted GM 6 with no mufflers.
"If you can find a better vehicle, buy it" Lee Iacocca, Chrysler commercials of the '80s.
"I did. They are called Classic GM pickups !!!"
