Holley Differences

[Jayhawk500]

Can anyone please tell me the difference between a 1972 factory Holley w/ a List number of 6238 and one w/ 6239?

The 6238 should be for an automatic and the 6239 should be for a 4-speed.
Looking at the carbs on eBay...I can't tell the difference, physically.
Is the internals different? I did buy a 6239, it needs rebuilt and I'm not going for numbers matching. Just the fact that it's a factory carb.

I don't have a Holley book to look them up.

I guess my burning question is," How does the Turbo 350 linkage attach to the factory Holley?"
Pictures would be very helpful.

Thanks for the help.

[Stingr69]

The bores, shooters, springs and jets etc are all the same as far as calibration according to the Holley carb list. Unfortunately I got nothing for you on the kickdown linkage.

Hope this helps.

[Jayhawk500]

Originally Posted by Stingr69

The bores, shooters, springs and jets etc are all the same as far as calibration according to the Holley carb list. Unfortunately I got nothing for you on the kickdown linkage.

Hope this helps.

So far out of 2 sites your the only one to respond! Hopefully some one will chime in.

THANK YOU!

[hypurone]

There is a bracket that will attach to the throttle shaft. It will have a pin on it to attach the TV cable. Either with a retainer clip (E clip) or a push-on type...

You can see it in the last pic in the first post here:

http://forums.corvetteforum.com/c3-p...le-pumper.html

the pin at the bottom of the bracket is where the TV cable will attach...

[Jayhawk500]

Originally Posted by hypurone

There is a bracket that will attach to the throttle shaft. It will have a pin on it to attach the TV cable. Either with a retainer clip (E clip) or a push-on type...

You can see it in the last pic in the first post here:

http://forums.corvetteforum.com/c3-p...le-pumper.html

the pin at the bottom of the bracket is where the TV cable will attach...

The 2nd carb is a regular 750 DP. The shafts are not the same. I am planning on modifing to this shaft if I can't find a solution, but was wanting to keep it OEM. Here's 2 pic's of the stock throttle shaft.
The last pic is of last night. This is not a normal thing here on the Oregon coast. It usually rains, ALOT!

I you look between the carb and HEI, that's the project I'm working on...'74 Nova for the wife. She wants a "Hot Rod" since I have my 5th Gen. So... I building a clone '70 LT-1 hoping to get 350-370hp.

Thanks for the help!