1972 LT-1 Carburator

[Martin Z.]

Does anyone know where I can get a carb for my 72 Lt-1 w/air? Car has a build of 6/72.

[Don W.]

Re: 1972 LT-1 Carburator

Very hard to find. I looked for dated '69 for my 427/390 HP for 6 months and still have not found one. Try searching google, ebay, Hemmings motor news, etc.

Don

[Don W.]

Re: 1972 LT-1 Carburator

Is one of these the correct Holley model number for your application?

6238-1A 72 Holley 4-brl 350 Camaro Z-28 & LT-1 Auto trans
6238A 72 Holley 4-brl 350 Z-28 Auto trans
6239-1A 72 Holley 4-brl 350 Camaro Z-28 & LT-1 Manual trans
6239A 72 Holley 4-brl 350 Corvette 255HP, Camaro Z-28 & LT-1 Manual trans

[Terry M.]

Re: 1972 LT-1 Carburator

I am working from memory -- and I shouldn't do that, but my references are at home.

The very late 1972 LT1s used the later Holley and I think that is 6239-1A. I will have to look though and see just how late. I think there is something in the last revision of the 1970-72 TIM&JG on that subject. It might be worth while someone who has one to look it up.

[Don W.]

Re: 1972 LT-1 Carburator

Terry...all my stuff is at home too. Trying to find info on the internet.

Martin...Do you know the holley model number you are looking for? That is step #1....Don

[Don W.]

Re: 1972 LT-1 Carburetor

Ok, I found the model number. I have Richard Prince's Corvette 68-72 Restoration Guide tucked away in my office. According to Appendix J; there is a single listing showing LT1 350/255, 4-speed; Holley R6239A GM # 3999263

[Don W.]

Re: 1972 LT-1 Carburator

Here's an add in Hemming's motor news; but, I wait until you confirm the correct part number...Don

http://www.hemmings.com/classifieds/partsforsale/chevrolet/unspecified/756638.html

[Terry M.]

Re: 1972 LT-1 Carburetor

Ok, I found the model number. I have Richard Prince's Corvette 68-72 Restoration Guide tucked away in my office. According to Appendix J; there is a single listing showing LT1 350/255, 4-speed; Holley R6239A GM # 3999263

I think -- memory again -- that the R6239-1A was added to the TIM&JG in the last update, so Richard's information may be dated.

[Robert E.]

Re: 1972 LT-1 Carburetor

There are two listed in the TIM/JG;

Holley List 6239A front metering block 6828 and rear 4519
Holley List 6239A-1A front metering block 7102 and rear 7101

No mention of when the revision was made during the year. Only reference was with regard to the LS-6 List 4803.

Robert

I think -- memory again -- that the R6239-1A was added to the TIM&JG in the last update, so Richard's information may be dated.

[Brad M.]

Re: 1972 LT-1 Carburator

Martin,

I sent you an email. I think the one that I have is this one:

Holley List 6239A front metering block 6828 and rear 4519

[Louis T.]

Re: 1972 LT-1 Carburator

Hi Martin,

Try contacting the Northeast Chapter's Judging Chairman, Drew Papsun (203-847-4678, apapsun@aol.com). He's especially knowledgeable and passionate about LT-1s, and may also have some ideas for you.

Regards,

Louis

[Terry M.]

Re: 1972 LT-1 Carburator

We have noted a very original 1972 LT1 with a trim tag date of L03 and a List of 6239A-1A.

[Bryan M.]

Re: 1972 LT-1 Carburator

My 72 LT-1 with air Holley does not have the letter A in the Source #.
Explanation? Trim Tag I-27
The ID numbers as follows
Chevrolet # - 39999263
Code # - GA
Source # - 6239-1
Primary # - 7102
Secondary # - 7101

[Bryan M.]

Re: 1972 LT-1 Carburator

My 72 LT-1 with air Holley does not have the letter A in the Source #.
Explanation? Trim Tag I-27
The ID numbers as follows
Chevrolet # - 39999263
Code # - GA
Source # - 6239-1
Primary # - 7102
Secondary # - 7101

Any comments about not having the A in the source #?

[Terry M.]

Re: 1972 LT-1 Carburator

Bryan, I care to comment as follows:

Look at the Holley sequencing system data. Holley used to, and I think still does, publish a parts list book, and an index of all their list numbers. One or both of those books explains their revision number system, and they do list the internal part numbers for the revisions in the parts book.

As best I remember: The first released version of a list number will be List XXXX. The next revision will be XXXX-1, then comes XXXX-1A, then XXXX-1AA. After that I am lost, but I think I have seen some with three A.

Anyone care to look it up to be sure?