Will this fix the pulley problem?

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Jan 22, 2005 | 10:58 AM

C5 then C6

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Instructor

Joined: Apr 2002

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From: DFW TX

Will this fix the pulley problem?

I haven't run across any yet....but I was wondering if installing an underdrive pulley system would be the same as any dealer fix for the pulley's that are backing off. My VIN is in the 6K's so it looks like I have good odds of failure one day. I've only had the pulley on a Z28, but I liked the results. I'd also like to hear your thoughts on any downside to using the aftermarket pulley's. Thanks.

Jan 23, 2005 | 07:24 PM

bdc6

Racer

Joined: Dec 2004

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From: Watertown Mass

Quote:

Originally Posted by C5 then C6

beats me...

Jan 23, 2005 | 10:42 PM

LS WON

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From: San Francisco CA

If It Isn't Broke Don't Fix It

Jan 24, 2005 | 02:54 AM

shopdog

Race Director

Joined: Oct 2004

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Quote:

Originally Posted by C5 then C6

I don't think that swapping in an underdrive pulley would address the problem per se. But if while doing that you also pull the harmonic dampener, install the diamond dust washer per the Chevy TSB, and use locktite on the *new* crankshaft bolt, you'll have addressed the problem further than Chevy has.

Realize that installing an underdrive pulley may compromise the electrical system of the car at low RPM, and may reduce AC efficiency too. I don't think that the couple of hp you may gain on the top end is worth it.

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