Holley Double Pumper Identification
Thread Starter
Race Director
Joined: Feb 1999
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From: Lenoir City Tennessee
Ci 6, 8 & 10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15
Holley Double Pumper Identification
A buddy of mine just got a 75 vette. The motor has been all dressed up and has an aluminum intake with a Holley double pumper carb on it. I went over to his house yesterday and we did a little tinkering on the car. He asked me if I knew what size the carb was and of course I have no idea. Is there a way to tell what size the carb is by just looking at it. The only numbers I could find were on the blocks just behind the fuel bowls. I didn't write them down but I can get them if needed.
Any help would be appreciated.
Any help would be appreciated.
Instructor
Joined: Jul 2003
Posts: 172
Likes: 0
From: Richmond Virginia
Holley Carb
There should be a number on the front of the air horn of the carb like R-4781 or something similar. That will be the model number of the carb. Then you can look it up.
Last edited by tom102; Sep 4, 2004 at 01:24 PM.
Melting Slicks
Joined: May 2004
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From: Gulf of America
2023 C7 of the Year Finalist - Unmodified
2018 C3 of Year Finalist
If it has a choke horn, it will be stamped on the side of the horn itself. For instance on my 650 DP, mine is stamped with 4777-4. On others the horn will be stamped with List -81850 for example. It it is a Dominator or racing carb without a horn then it will be stamped on the top of the carb body, close to the bores. You would have to view it from the top to see it. Example of this would something like L 9375. If the previous owner had the choke horn milled off (along with the List numbers) , well then it's gonna be harder to find out.
