Quote Originally Posted by Navy7797 View Post
Ok I measured the pump and its correct length of 5 5/8" long. Everything else lines up so I guess I guess this shinny billet pulley is another part to be added to the scrap heap.
NTFDAY, thanks for your input and for an education, I have a 283 with a 327 crank that uses a bolt to hold the balancer on .
I'll have to get some pics.
I see they make shims for the balancer but that means the power steering pump and alt. would also have to be shimmed out, not really an option .

I wasn't aware of different length pumps for Corvettes. The only thing I found different for A Vette was the boss for the water pump hose fitting. A C3 Vette with air requires a different pump, the boss for the hose fitting extends out further from the body, and if you use the wrong pump you need an extended hose fitting. I found that out the hard way. Also , FWIW, 55 to 57 sbc's have no provision for side motor mounts, they used a front saddle mount.