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Old 12-01-2007, 01:22 PM
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Drive belt Diagram

I'm helping a friend with a Chevy Monte Carlo. Today I noticed that he had his belt running from the power steering pump to the crank and not over the waterpump. Does anyone have a belt routing diagram for a 350 chevy engine. I'm pretty sure the belt should include the water pump.

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Old 12-01-2007, 03:14 PM
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If thats the case....I hope he has a electric water pump.
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Old 12-01-2007, 04:54 PM
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well , as long as there is a belt on the water pump and it turns it ,and the other belts are aligned with the pulley grooves on your harmonic balancer , it shouldn't matter. I have no power steering on my chebbie and the belt just goes around the alternator and the water pump. I have extra grooves that don't even get used. As long as everything turns round and round , it shouldn't matter which ones are turning together. Just think , if his belt breaks on his power steering , he'll still be pumpin water and coolin down!
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Old 12-01-2007, 06:24 PM
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The beauty of the Chevy LT1 V8... no belt on the water pump at all. I've always wondered why more engines weren't designed to direct drive the water pump.
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Old 12-01-2007, 06:31 PM
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No pulley and no belt ... driven internally
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Old 12-01-2007, 06:48 PM
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What year ?? Short or long pump ?
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Old 12-07-2007, 09:49 PM
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For my '75 GMC with 350 4 barrel, they list two lengths of PS belts. One is long enough to go around onlly the crankshaft and PS pump pulleys, while the other is long enough to include the water pump pulley. There is also another belt that goes around the crankshaft, water pump and alternator.

According to the parts book, since I have AC, I should use the longer belt. With AC I have HD cooling, which includes a seven blade fan with thermal clutch.

The extra belt turning the water pump pulley probably helps keep the fan turning when the thermal clutch engages. The other advantage is that it keeps the water pump turning if I break the alternator belt. I have been running the short PS belt, and managed to break the alternator belt. The engine got hot almost instantly when the water pump stopped turning. The temp gauge moved up so fast that it looked like the second hand on a clock.

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