I believe this depends on what you mean by "kinds". In the sense that we've been discussing, there are only TWO, long and short. The "Corvette" pump which is also known as the "High Performance" pump is usually the short pump with the larger bearing and more efficient impeller. There are also a lot of differences with accessary bracket mounting bolt holes from year to year, plus some other minor config differences, especially between manufacturers.

 

Respectfully, the Corvette pump is indeed different and requires its own pulley set. From vetteweb.com

"During the first two decades of the Chevrolet V-8, a great variety of water pump configurations were utilized. The one constant, at least through the 1968 model year, was the length of the leg, i.e. the distance the body of the pump stood away from the front of the block (this appears to hold true for '65-68 big-blocks as well as for all small-blocks). All the various and sundry water pumps were of a "short leg" design. Starting in 1969, with the sole exception of the Corvette, the pumps were changed to a "long leg" design--Corvettes used the short leg water pump through the end of 1970. The '71-82 (the latest for which we have reference data) Corvettes used a shorter long-leg pump than other small-blocks."

This may well be the problem.

And from Edelbrock:

Short-Style Pump for 1971-82 Corvettes (3/4" pilot shaft) ....#8812
Polished #8812 ....#8822
Fits all 1971-82 S/B Corvettes. Comes with heavy-duty 3/4" ball/roller bearing. Dimension from block surface to hub: 5-13/16". Inlet diameter: 1.80".

Short-Style Pump for most 1955-72 cars and trucks (5/8" pilot shaft) ....#8810
Polished #8810 ....#8820
PermaStar finish #8810 ....#88102
Fits all 1955-68 S/B Chevy passenger cars, 1969-70 350 c.i.d. Corvettes and 1955-72 light duty trucks. Has 3/4" ball/ball bearing. Dimension from block surface to hub: 5-5/8". Inlet diameter: 1.80".

Long-Style Pump for 1969-87 V8, 90° V6 and 1973-86 truck (5/8" pilot shaft) ....#8811
Polished #8811 ....#8821
PermaStar finish #8811 ....#88112
Fits all 1969-87 S/B Chevy or 90° V6 passenger cars and 1973-86 light duty trucks. Does not fit Corvettes (use #8810 or #8812) or late-model vehicles with serpentine accessory drive belts (use #8881). Has heavy-duty 3/4" ball/roller bearing. Dimension from block surface to hub: 6-15/16". Inlet diameter: 1.80".

 

markinkc69z, You seem to be hungup on being right.
Configuration: n. Arrangement of elements or parts.
"During the first two decades of the Chevrolet V-8, a great variety of water pump configurations were utilized"
Excluding the LT1 and LS1 engines, there was only ONE configuation of water pump, from 1955 on.
As for the rest of the post, you just confirming what I said. " the Corvette pump was usually the short leg pump".
I believe the point most of us were trying to get across is that "rwjohnson06" does not need or would it be a good idea to shim this. But that he needs either a different pump or pulley's.

 

Just trying to help, sorez28. I believe the hub specs for the 3 different length pumps are important for pulley alignment, right? Okay now that this has been beat to death.

 

Yes, exactly. Just seemed like you were hijacking the thread to make a point.
In fact your posting of the exact depths of the different pumps should be very helpful, as he is only about 3/8th of an inch off. What pump does that sound like to you?

 

I think he needs to measure the w/p