Re: 350 GM Crate Motor questions for a 66 C10
On the quadrajet, I would at the very least do a light rebuild with a new accelerator pump and gasket kit. You can get as basic or as complicated as you want with the rebuilds. The ethanol fuel really does a number on those old pumps and the newer pumps are made from a better material. I use cliffshighperformance.com for my rebuilds. Check out their SR rebuild kit.
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1976 K15 Short/Step
1981 C10 short/wide
1994 K1500 ECSB
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