Correct Center Carb for Early 1968?

[Rick L.]

I am trying to figure out what the correct center carb is for my 1968 427/400 4-speed built Sept. 12, 1967. Where I am getting confused is with the List #, 4055, 4055-1, 4055-1A, etc. Which List number is correct for this car?

Thanks,
Rick L.

[Wayne M.]

Re: Correct Center Carb for Early 1968?

Per A. Colvin, should be 4055 for all three 4-sp versions with part # (on airhorn) 3925517 EV. Asterisk beside the 4055 says "first design".

[Terry M.]

Re: Correct Center Carb for Early 1968?

The way Holley numbered their changes was:
First List 4555
next List 4555-1
next List 4555-1A
And I suppose it would have gone on to List 4555-1B, although I doubt this one did. I don't know what it would take to get to 4555-2. Clem might have the final word on this though.

[Clem Z.]

Re: Correct Center Carb for Early 1968?

The way Holley numbered their changes was:
First List 4555
next List 4555-1
next List 4555-1A
And I suppose it would have gone on to List 4555-1B, although I doubt this one did. I don't know what it would take to get to 4555-2. Clem might have the final word on this though.

sorry can't help out there as we always changed out the puny 350 CFM center carb to to a 500 CFM with progressive mechanical linkage for the end carbs. street racing was tough back then.