Yet Another Carb Question

[Earlsfat]

Have a Holley 3310-3 that's in need of some serious rebuilding (replacement actually). I'm pretty sure it's a 750 CFM, and I THINK it has an electric choke, although with all the pieces that are missing, I don't know if it even has a choke. It sure as hell doesn't run like it has one.

Anyway... I'm looking at an Edelbrock Performer 750CFM w/ electric choke, although the manual choke seems to be about the same except for the primaries on the electric are .110 and on the the manual are .113. (Aside from the choke) What the hell is the difference and how is that going to affect gas milage? I'm only getting about 8 MPG now, so any less and I might as well walk.

Are Edelbrock Performer's decent? OR should I be looking at something else?

Any insight would be much appreciated.

[tacoma man.]

what size engine you running it on?

[Earlsfat]

454, modifed cam (not sure just how much or who makes it), solid lifters, not sure about the heads, 3" inch exhaust, electronic ignition (MSD 6AL with Acell supercoil distributor). Has GM Manifold and waterpump. I was told it's running 11:1 compression when I bought it if that helps.