Thread: 1940 Ford Pickup

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Originally Posted by Navy7797

Another problem popped up, new water pump causing pulley to be out of line. The old pump was off just bit so I let that one go but the new one is off by 3/16 (too long at the pulley mounting plate) . Mounting my A/C pump ready brought this to my attention. My power steering lines up and so does the alt. Does anybody have spec's on a short water pump for SBC. Its either the pump or the billet alu. pulley. Thinking of pressing the flange on shaft a bit, but down the road that will cause troubles on the road if the pump fails. thoughts ?

The short water pumps were used on early engines with a pressed on balancer that was around 3/4" to an 1" thick and the crank snout was not drilled or tapped for a bolt. I used to drive them on with a hammer and a length of 2 by 4. Mixing billet with steel pulleys could be your problem. Can you take and post any pictures?

Originally Posted by NTFDAY

The short water pumps were used on early engines with a pressed on balancer that was around 3/4" to an 1" thick and the crank snout was not drilled or tapped for a bolt. I used to drive them on with a hammer and a length of 2 by 4. Mixing billet with steel pulleys could be your problem. Can you take and post any pictures?

I have all billet pulleys, I just found a bit of info on the pumps, SBC Corvette pump had a length of 5.800 vice 5.62 inches on the rest of the sbc from the 60's, or so says the pic on the net, maybe I have the wrong pump, headed to the shop to find out.

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 .

Originally Posted by Navy7797

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.

Originally Posted by NTFDAY

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.

what I found on the net