Correct alternator for 1978 L48 base corvette

[Mark B.]

I need to either have my original alternator rebuilt or replaces. What is preferred from a judging standpoint. If I need to replace what is the proper replacement alternator for max points? Thanks !!!!

[Edward J.]

Re: Correct alternator for 1978 L48 base corvette

Mark if the alternator is the original, You'll want to have it rebuilt, look for a local rebuilder in your area. sometimes you can find a independent rebuilder. try googling it.

[Mark B.]

Re: Correct alternator for 1978 L48 base corvette

Thanks Ed. That's kind of what I anticipated as I do have the original on the car. Also, I need to repair/replace the two prong connector (has the brown and red lead). Any thoughts on where I can get a replacement pigtail. The only one I have seen on line to date has a white and red wire. Thanks again for your help and have a great day!

[Edward J.]

Re: Correct alternator for 1978 L48 base corvette

Mark the auto parts store maybe able to find this part. or maybe even the rebuilder.

[Mark B.]

Re: Correct alternator for 1978 L48 base corvette

Agreed,,,,,Zip Products had red and white vs red and brown. My search begins!

[Edward J.]

Re: Correct alternator for 1978 L48 base corvette

Mark, sometimes you can remove the wires from the plastic connector housing and replace the terminals. I can look later and see if I have something that will work. do you need both connectors?

[Mark B.]

Re: Correct alternator for 1978 L48 base corvette

thanks Ed. I have a couple C3 buddies looking to see what they have as well. If you find something that can help let me know in case I strike out on my end....much appreciated!

[Leif A.]

Re: Correct alternator for 1978 L48 base corvette

Be SURE that your rebuilder rebuilds YOUR alternator and not give you one that's already been rebuilt. Can he date code the diodes, as well?

[Edward J.]

Re: Correct alternator for 1978 L48 base corvette

Leif, Diodes are not seen on the these style alternators.

[Leif A.]

Re: Correct alternator for 1978 L48 base corvette

Leif, Diodes are not seen on the these style alternators.

Later C3...you're absolutely correct!!

[Mark B.]

Re: Correct alternator for 1978 L48 base corvette

thanks Leif and Ed. I am definitely selecting a rebuilder who will rebuild and return my alternator. I have a line on one such outfit as I type. And correct, the diodes are not able to be seen.....

[Joe L.]

Re: Correct alternator for 1978 L48 base corvette

thanks Leif and Ed. I am definitely selecting a rebuilder who will rebuild and return my alternator. I have a line on one such outfit as I type. And correct, the diodes are not able to be seen.....

Mark------


You could rebuild it yourself. These alternators are not difficult to rebuild. Usually, all that is needed are bearings and brushes. However, you do need to test all other components as described in the factory service manual. It's very easy to do the testing. Replace any parts that don't check out.

[Mark B.]

Re: Correct alternator for 1978 L48 base corvette

Mark------


You could rebuild it yourself. These alternators are not difficult to rebuild. Usually, all that is needed are bearings and brushes. However, you do need to test all other components as described in the factory service manual. It's very easy to do the testing. Replace any parts that don't check out.

thanks Joe, that may be my next step if I cant find a reliable restorer

[Joe L.]

Re: Correct alternator for 1978 L48 base corvette

thanks Joe, that may be my next step if I cant find a reliable restorer

mark------


The other advantage of rebuilding it yourself is that you keep the alternator in your possession. For those like me that are "anal" about losing original parts, that's a BIG advantage. However, if you come to the conclusion that you don't feel qualified to do it yourself, then you have no choice but to trust in someone else.