[steveb]

I need to replace the fuel pump (Carter MO1634) on my 440 fitted with Holley 750. The engine has been rebuilt in the past with a "warm" cam. Will a standard pump as available at Rock Auto be sufficient (eg Carter 4845) or do I need to fit a Holly 110 gpm as available in UK. The car is not raced, just driven "normally".
Any help and advice please.

[Adrian Worman]

The Carter mech pump as originally fitted to SixPaks and the like are very good, I used one in place of a Holley and it works perfect, the Holley one had a strange shaped lever arm and did'nt work as well, pressure was all over the place

[dave-r]

Carter.

But get a big flow one and fit a regulator and a little inline fuel gauge before the carb to set the pressure to 6.5lbs. That way, no matter what you do, you will always have 6.5lbs at the carb with no worries.

[steveb]

Thanks guys. Unfortunately Rock Auto can't tell me the flow rate of their standard ones. Surely they do the job properly as they are made for the 440.
My local performance garage has cast doubts because the one I'm replacing is a double diaphram and obviously a higher flow rate, although what I don't know.
I like Dave's idea but I'm wanting to fix it in the most economical way and Rock's price is only approx £45 delivered compared to 3x or more.