65 3259 715 Holley

[mygt350]

Ran across a 3259 715 Holley that looks like it has a 50CC accelerator pump instead of the 30CC I think were originally installed. What, if any, effects would the larger pump have on the carburetor, other than not being correct?

Thanks

[68gtcoupe]

Not my words, but this pretty much sums it up:

"A larger capacity accelerator pump achieves one thing, it extends the duration of the pump shot. A larger accelerator pump is usually required when the carburetor, intake manifold and/or cylinder head is too large for the engine and the resulting weaker signal at low engine RPMs requires more time for the booster venturi to pull fuel through the main jet."