Holley Carb Identification?
Thread Starter
Le Mans Master
Joined: Feb 2000
Posts: 7,032
Likes: 2
From: Newburgh NY
Holley Carb Identification?
I recently put the original carb back on my 72 LT-1. When I bought the car it had a Holley on it which I believe is a 780cfm carb. Not sure of the exact model though as am not up on my Holley ID's.
Numbers on it:
3999263-6A
6239-1
3476
There is also the #3828 inside the carb. It has an idle solenoid on it as did the original Holley on the LT-1.
I'll post a pic shortly. Carb is like brand new and I am trying to establish a value to sell it so obviously need to properly id it.
Thanks
Edit - Add Pics:
Numbers on it:
3999263-6A
6239-1
3476
There is also the #3828 inside the carb. It has an idle solenoid on it as did the original Holley on the LT-1.
I'll post a pic shortly. Carb is like brand new and I am trying to establish a value to sell it so obviously need to properly id it.
Thanks
Edit - Add Pics:
Last edited by 78Vette-SA; Oct 8, 2006 at 07:55 PM.
Drifting
Joined: Jun 2003
Posts: 1,455
Likes: 5
From: Upstate South Carolina
3999263-6A
6239-1
3476
The carb is a correct replacement for your 72 LT-1. It should be pretty much just like the original carb. The first two numbers are the part number and list number. I think the 6A is actually GA. 3476 is the date code. 347th day of 96 or 86, maybe even 76. I'm not sure when holley produced these replacement carbs. I've seen new replacement carbs for 70 LT-1s, list 4555, on ebay for around $600. Check with holley, they may still sale that carb.
6239-1
3476
The carb is a correct replacement for your 72 LT-1. It should be pretty much just like the original carb. The first two numbers are the part number and list number. I think the 6A is actually GA. 3476 is the date code. 347th day of 96 or 86, maybe even 76. I'm not sure when holley produced these replacement carbs. I've seen new replacement carbs for 70 LT-1s, list 4555, on ebay for around $600. Check with holley, they may still sale that carb.
Tech Contributor
Joined: Aug 1999
Posts: 14,366
Likes: 6,348
From: At my Bar drinking and wrenching in Lafayette Colorado
As additional info, the 6239-1 is a model 4150 (has secondary metering block instead of the plate), 780 cfm carb. It should be jetted 68/73 with the usual 6.5 PVs.
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