I am happy to announce that with a little modification to the pivot plate, the new Delco alternator is a perfect fit! Check out my website at www.dmcman.homestead.com for pictures of the pivot plate modified! --- In dmcnews@xxxxxxxxxxx, "Steve Rubano" <srubano@xxxx> wrote: > I know that this thread has been coming up alot and that most people > are still asking about part numbers and what mods were performed to > get it installed. For those of you who are interested, today I > purchased a Delco alternator remanufactured part number 7939-3I. It > is from a 90-91 Chevy Lumina with a 3.1 Litre engine. It outputs 105 > amps and the casing size is similar to the stock alternator. This > alternator has a single mount point on the pivot mount and a > modification needs to be performed on the pivot plate (the one that > is attached to the engine block by 3 bolts). You can use your > existing adjusting arm and belt on this alternator. The alternator > comes with a serpentine belt pulley that has to be swaped with a > single belt pulley, any auto parts store should be able to do this > and they usually don't charge to do this. I have a website at > www.dmcman.homestead.com, go to the Parts & Mods page on it where I > will have pictures and modification steps in detail (coming soon). I > will all let you all know how it is after installing it tonight after > work. The way that I will have it set up, I should not run into > the "no charge at idle" syndrome as with most replacement alternators > I have heard about since the pulley is smaller (will turn the > alternator faster) and best of all you can get it at any autoparts > store since this is used in a wide variety of chevy cars. > > Thanks, > Steve