I too am looking to change over a serpentine setup I just looked at GM Parts Direct part #12497698 has all the componets plus the a/c comperssor for $655. Does anyone know if the a/c and alt are on the correct sides? will fit under the hood? also Im not running the air pump how would you go about eliminating it? oh yeah Im trying to put this stuff on the factory sb with TPI any help would be great

 

Do a search on this. I think this is the same as a TPI F-body setup. A/C high pass side, alternator high drivers side. There is an air pump eliminator available for F-bodies, probably for the GMPP kit too. Trucks just re-route the belt without the air pump. If this is an F-body type kit, it will work with a C3, several forum members have used it.

 

I have the complete set up for $350.00 if interested.
Complete with bolts and A/C.

 

My understanding is that the GMPP Serpentine Kit is the same assembly that was originally installed in 91 (and 92?) Camaros and Firebirds. Apparently it was installed on some other GM vehicles. Considering the new GM parts that are included, it's a good buy.

I have this kit installed on a ZZ4 which is in turn mounted in a 68 Corvette. There are some fit issues:

1) There's no provision for a mechanical fan. Start thinking electric fan(s). Since the kit has a long nose reverse rotation water pump, there's no really reasonable way to mount a mechanical fan anyway. I replaced the kit's cast iron water pump with an aluminum reverse rotation Edelbrock pimp.

(2) The idler wheel, that substitutes for the smog wheel pulley. Turn the idler wheel support bracket upside down and mount the idler wheel (you'll have to search for a new belt). Or delete this idler wheel altogether.

(4) The PS pump has a metric "O" ring high pressure outlet and the low pressure return is in the wrong place. There's several ways to skin this cat. Buy a new reservoir for the pump (i.e. the spam can). When I say new, I mean buy a new reservoir for an early C3, or remove the reservoir from your old C3 PS pump. You can buy a new early C3 reservoir for a Corvette restoration house. I retained the metric high pressure outlet since I just love O rings. I had a new custom made high pressure line made. I made it 1 1/2 longer than stock, since the PS pump is moved forward by about that distance with the Serpentine attach bracket.

(5) The Serpentine kit has an odd mixture of English and metric bolts. Since some of these bolts may go into an aluminum head, make sure you install the bolts initially with your fingers. If they screw in OK, then you don't have a thread type mismatch.

(6) The Serpentine kit includes a PS pump bracket you probably can't use. Also, the AC bracket is drilled for a cylinder head bolt which may not exist on your car. The instructions do say that it's not necessary to install this bolt.