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

Underdrive Pulleys

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Old Aug 11, 2002 | 12:47 PM
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Default Underdrive Pulleys

Good Morning People,
I have to change my waterpump so now is the time to change the pulleys too. Is it worth the extra work and expense to go to the underdrive/overdrive system or not? Thanks for your in-put.
I intend to put on a hi-performance type water pump with an advertised 30-40% more flow.


[Modified by ddsovy, 8:50 AM 8/11/2002]
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Old Aug 11, 2002 | 02:37 PM
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Default Re: Underdrive Pulleys (ddsovy)

I dont especially care for them, but some people have had some nice gains with them.
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Old Aug 11, 2002 | 02:42 PM
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Default Re: Underdrive Pulleys (ddsovy)

Don't waste your $$$.......they are not worth. :cheers:
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Old Aug 11, 2002 | 03:03 PM
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Default

I have an underdrive crank pulley on my engine. No issues with cooling or charging (so far). :)
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Old Aug 11, 2002 | 06:48 PM
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Default Re: Underdrive Pulleys (ddsovy)

I like my March Power & Amp set.

Now that I've finally had the overdrive alt pulley installed charging is as before.
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