Ask Away! with Jeff Smith: Fixing a Rich Idle & Strong Gas Odor in a Small Block Chevy V8 I recently bought a used 750 cfm Holley double pumper carb at a swap meet and bolted it on my small block. The engine idles really rich and will literally […] Read More
Mailbag: Leaning-Out a Holley 650 Double Pumper’s Rich Idle Fuel Mix Q. I have a Chevy 350 engine with a Holley 650 double pumper and a COMP Cams Xtreme Energy camshaft in my street rod. I’m unable to get the idle […] Read More