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Holley Carb Identification?

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Old 10-08-2006, 07:15 PM
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78Vette-SA
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Default 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:





Last edited by 78Vette-SA; 10-08-2006 at 07:55 PM.
Old 10-08-2006, 09:36 PM
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mstanton
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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.
Old 10-09-2006, 01:05 PM
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lars
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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.
Lars
Old 10-09-2006, 09:54 PM
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Thanks guys...

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