C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

C4 Water Pump long or short style?

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Old Nov 16, 2011 | 11:06 AM
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Default C4 Water Pump long or short style?

Hello,

I'm looking to do a complete serpentine belt conversion on my 71 resto-mod Camaro and am trying to find info on my options as far as which cars are suitable donors. I have a Classic Auto Air heat/AC system and it calls for a long water pump. I thought a C4 may be a good one to get as it most likely sits all the accessories low being that Corvettes are not known for hood their clearance ;-)

If anyone has info on this please let me know. Also if anyone has a complete setup for sale let me know.


Thanks,
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Old Nov 16, 2011 | 11:50 AM
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C4 has a short pump. Maybe a truck pump.
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Old Nov 16, 2011 | 01:00 PM
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March performance has numerous belt, pulley and bracket combos for a serpentine conversion.
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Old Nov 16, 2011 | 07:01 PM
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The c4 water pump is unique to the c4, it wasn't used on any other model. So long or short, it doesn't matter.
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Old Nov 16, 2011 | 08:00 PM
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Go buy a std long water pump and start looking at bracket kits that are compatible with your AC. C4 pump wont work
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Old Nov 16, 2011 | 09:28 PM
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I know theres a lot of aftermarket stuff from $600 up...looking to do this on a budget of less that $300 for all brackets, atl, ps pump. Will spend a little extra on nice aluminum water pump and new compressor comes with kit from Classic Auto Air. Not looking for the "Bling" effect, just a clean funtional one belt setup.

When I looked at the Vette diagram for the belt routing it shows the AC compressor mounted down low which I like better. I'll have to see if it is another year vette that is supposed to work out.

Anyone know if later model C3's had a serp setup?

Thanks for info. Was told 3rd gen 88-92 Camaro, Vette or a 90-94 4.3L, or SBC truck or S10.

The truck one will work but puts the idler pulley too close and high center of intake and also belt is high going toward alt and so upper rad hose is a little tricky. So far the 88-92 Camaro looks like best bet but all of the junk yards around here dont have any at the moment.
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Old Nov 16, 2011 | 09:33 PM
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Here is a comparison from the truck to the 3rd gen Camaro. Truck setup is in top pic


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Old Nov 16, 2011 | 09:47 PM
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You can get some ideas over on 3rd gen.org mostlly used Camaro stuff some of it is lower fitting. Creative stuff on the cheap.
Vette specific stuff avoid it if you can you just pay more for stuff that does the same thing as the non Vette parts.
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Old Nov 17, 2011 | 12:00 AM
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Originally Posted by chevyreb
When I looked at the Vette diagram for the belt routing it shows the AC compressor mounted down low which I like better.
TPI C4's have the compressor up top on pass side like the TPI F-Bodies
( as shown in your pic above )

88 -91 C4's have the lower profile and more desirable Denso compressor




FWIW;
The Vette pump is slightly longer than a "short" pump ( pulley can be shimmed to suit) and the TPI serp uses a long pump.
IIRC Both are reverse rotation
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Old Nov 17, 2011 | 09:33 AM
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Great info thanks vetteoz!
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