Quadrajet Problem Solving > Quadrajet Parts and Numbers

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passthebuck:
Cliff,

Kit received & installed. Is running much better! Thank you! Tuned it with a vacuum gauge & verified it with my Autometer a/f gauge. Still in the tuning stages but at WOT the engine is stumbling, coughing & the af gauge swings to 18+. I THINK it's a stock fuel pump problem (generic no-name factory replacement...).

Do you agree?

If so, can you recommend a pump that kicks out more fuel but that I wont need a regulator for? Carter? Holley Etc?

Greg

Cliff Ruggles:
Most high performance mechanical pumps do not require a regulator. 

Also keep in mind that they are only as good as the supply to them.  To see maximum output from the pump, it must have large feed lines and no restrictions anyplace.

I've never had much luck with mechanical pumps, even high performance ones on really fast cars, but I wouldn't think the little small block 327 with the small cam would have problems with fuel delivery for what you are doing, even with a stock mechanical pump......Cliff

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