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Chris,
I haven’t done this swap on a ’72, but here’s what I’ve done for my ’67 so far. The Holley 600 that was on the car when I got it was shot. It looks like what should have been installed on your ’72 since it had a float bowl vent designed to be routed to a charcoal canister. It also had a reman sticker from ’79 on it.
There are no new Carter carburetors. The last of the Carters were the same as the Edelbrocks with a Carter Competition Series label on them. Carter stopped carrying them a year or two ago.
Anyway, I had a used Edelbrock Performer 750 manual choke (part # 1407) sitting on the shelf, and a fresh square bore gasket handy, so I popped the dead Holley off and dropped the Edelbrock right on. I cobbled the throttle linkage together, and ran a hose from the original fuel line to the inlet on the carb. With a fresh set of plugs installed (to replace the very Holley fowled ones), the car fired right up. This is good enough for me to move the car around in the driveway, and in and out of the garage. Do not drive one like this on the road, you will toast your 727!
You will need a Chrysler throttle lever/trans kickdown adapter from Edelbrock. I think it’s #8021. I just checked their site, and they added a few new items. They used to have only one adapter for Chrysler motors. I’ll have to check the part number on the one I have. You will need to remove the throttle stud from the old carburetor. It’s the double threaded/nutted piece that the throttle cable connects to.
I think I’m going to try to adapt the factory choke stove to the Edelbrock carb. If it doesn’t want to play, I may just install an electric choke.
If I were buying a new carb for the car, I would look at the Edelbrock Thunder Series AVS carbs. The secondary door is easier to adjust. Depending on how you plan to drive the car, the 625 might be plenty. If you plan to get on it, go with the 800. Yea, that sounds like a whole lot of carb, but the secondary door will adjust for what the motor is asking, nothing more. The Thermoquad equipped 440’s had 850 CFM.
Now all of this is if your Holley is a square bore. I think it is, but I don’t know for certain. I thought Chrysler had gone to all Thermoquads by ’72. The Thermoquad is a spread bore carb. The only Edelbrock spread bore is their version of a Rochester Quadrajet. They have one that crosses over to the Thermoquad, but I don’t know anyone running any Edelbrock Q-Jet. My boss had one on his Goat briefly, but had nothing but trouble. Might just have been his combination, but it’s the only reference I have so far.
If your car was originally equipped with a Thermoquad, and somebody replaced it with a spreadbore Holley, I would contact Demon Sizzler at http://www.thermoquads.com/ about getting on of their Thermoquads.
I know this isn’t exactly the answer you are looking for, but I hope it helps a little.
Rob McCall ’67 LeBaron
-----Original Message-----
I'm Reposting this in hopes it will go through this time:
Which currently available carburetor ( Carter? edelbrock? ) will fit my 72 Lebaron? I know this has been covered here before, but I would like to hear from someone who has actually performed this swap, someone that can give me specifics like name brand, part number, where to buy, cfm, price, etc. I would like to retain my original air cleaner, fuel line modifications are no problem, but what about the throttle cable and transmission kickdown linkage? Choke? It's time to lay the stock holley to rest...permanently
Chris 72 Lebaron 71 Lebaron... |
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