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Option13 · 08-11-2018, 11:49 PM

This was a similar build and highly recommended from 12 bolt and clifford performance who specialize in straight 6s. They recommended the holley 390 since it "wakes" up the engine.

08-11-2018, 11:49 PM	#7
Option13 Registered User Join Date: Sep 2015 Location: Phoenix, AZ Posts: 8	Re: 69 C10 l6 lack of power with 4bbl, offy intake, exh manifolds This was a similar build and highly recommended from 12 bolt and clifford performance who specialize in straight 6s. They recommended the holley 390 since it "wakes" up the engine.