71 CJ5 Holley 390 CFM Carb

[tomgrigsby]

I have a 71 CJ5 that doesn't run well yet - bringing it back from the dead. It came to me with a V6 and a Holley 390CFM, 4 BBL, Vacuum Secondary and electric choke. I'm about to buy a new carb as the rebuild attempt on the old one didn't go well. It won't idle at all unless really warm. Is this carb a good model for the engine? The engine is stock as far as I know, though it does have headers (no crossover pipe).
Any experience, thoughts, and recommendations would be appreciated.

 

[CJ]

The carb really never goes bad unless the seals on the throttle plate to throttle shaft get badly worn. And then, you usually only have a fuel seepage.

Just sounds to me like the carb wasn't cleaned and rebuilt correctly. There are really no parts that can wear out except those that are included on a good kit.

Who rebuilt the carb?

 

[tomgrigsby]

The carb really never goes bad unless the seals on the throttle plate to throttle shaft get badly worn. And then, you usually only have a fuel seepage.

Just sounds to me like the carb wasn't cleaned and rebuilt correctly. There are really no parts that can wear out except those that are included on a good kit.

Who rebuilt the carb?

I rebuilt it myself. The jeep sat for about 20 years and the carb was pretty nasty. I'm not sure I got the power valve stuff right, and of course I don't know if it ever ran right before or what has been done to it. Thought it might be best to just replace it and start over, assuming this is a good carb for the application. I guess I could try cleaning it again.

 

[gutthans]

I know this is late, BUT IF you see this...call Holley and order the following part:#12R7800 - 3AM

This is the number for the 390 CFM throttle baseplate. You won't get a better deal, and can't rebush the old one for less...and Holley DOES NOT LIST THIS PART on their site btw.

No, I don't know why...but I think it's because all of these are immediately put into the 8007 carbs they produce.