Going to look look at a Holley tomorrow, but it has a milled off choke horn, hence no list. Is there a easy way to ID say a 650, 700, 750, 800 cfm carbs?

THanks.

Take calipers with you and measure the throttle plate bores.

Thanks for the reply, but I'm almost positive that 650-800 cfm Holley's use the same 1-11/16 throttle bore diameter.

Sorry. Brainfart. Do the best you can to measure venturi.

Are you sure it was milled off ? The old 3916 and 4640 three barrels had no air horn as did a few others,the list number was stamped on the top of the casting.

Going by what the seller said, yeah it was milled (most likely cut) off.

There's a raised casting number on the driver side upper forward corner of the main body, right below the air cleaner flange.

Some of the ones I know are:

P-32 is an 850 CFM

P-11 is a 700

P-36 is a 780

P-80 is a 750

Post the number here and others might be able to cross that casting number to a LIST number.

Dude bailed on me today.. this week sometime he said. Anyways he threw out some #'s:

rear metering block: 7003 33101
front metering block 5271 33101

he didn't give me P-xx #'s.
Thanks for the info

Those are for a LIST #3310...750 or 780 CFM vacuum secondary depending on the dash number.