Just to help folks know more about what Svcattle has, below is a screengrab from another of his posts in the Big Bolts forum showing the specs of his truck.

It's a 1972 GMC 5500 with the standard GM corporate (Chevy) 350 V8, 5 speed manual transmission and 2 speed rear axle. IIRC, the typical carb for this 350 would have been a Quadrajet 4 barrel.

Svcattle - how about some pictures of your current engine and carb setup so folks can be sure what we are talking about?
Attachments
Svcattle 1972 GMC 5500 data decal.png (2.99 MB, 198 downloads)


~ Dan
1951 Chevy 3 window 3100
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"My Grandpa Carl's Truck and How it Became Mine"
1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver)
US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)