With regards to Lee's post
( interesting comments....there was a Tremendous difference in my street 292 with an electric fuel pump-....I have heard others doing this swap from mechanical to electric for years and I finally did it...and wowww what a difference!!!!... )
If the original fuel pump was not able to keep the carb float bowl full then any replacement pump whether electrical, mechanical, or hamster powered would make the difference you describe if it was able to supply the required volume. Pressure is only used to overcome any restrictions in the piping system to get the fuel to where it is going and it is the volume that keeps the carb supplied.
I have run Carter and Holley mechanical race pumps and both Holley street and race electric pumps and if the fuel requirements of the carb system are being met I honestly can say that as a racer / driver there is no way you can tell what is feeding that carb except for the sometimes annoying hum of an electric fuel pump.
I am currently running an electric pump on my very warmed over 250 and it feeds an Edelbrock 500cfm carb. The only reason I built it with the electric pump was for a cleaner appearance with underhood fuel line routing and so down the road if I choose to change to a 292 based engine I can run the cam that is now in the 250. And yes, the pump is wired through an oil pressure switch so it will not stay running if the engine stops. This switch is bypassed with the key in the start position while cranking.
Mike
