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[Z06] Under drive pulleys

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Old Dec 11, 2011 | 05:16 PM
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Default Under drive pulleys

I'm having a cam done next week. It was suggested I do a pulley. Any downside? Or just pull the trigger.
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Old Dec 11, 2011 | 06:20 PM
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The stocker has to come off during the cam change anyway. I did an UD pulley and have seen no adverse affects. I'd say go for it.
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Old Dec 12, 2011 | 12:42 PM
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the stocker eventually deteriorate anyway, good insurance
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Old Dec 12, 2011 | 04:31 PM
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Originally Posted by seebobgo
I'm having a cam done next week. It was suggested I do a pulley. Any downside? Or just pull the trigger.
Run a search in C5-TECH section. There is at least one aftermarket underdrive pulley documented to have contributed to premature timing chain failures.
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Old Dec 12, 2011 | 04:50 PM
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Installed 25% underdrive pulley. use the car only for autocross. This summer had overheating problems never had before, had to add larger radiator.
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Old Dec 12, 2011 | 06:50 PM
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A lot of mixed reviews on this subject all over. I'm going to ease the hammer down and pass on this mod.
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Old Dec 12, 2011 | 10:28 PM
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Originally Posted by seebobgo
A lot of mixed reviews on this subject all over. I'm going to ease the hammer down and pass on this mod.
Dude don't buy into it. Get a SLP UD Pulley, its like $200.00 and worth it. I have done many cam swaps on vettes and F-Body's and have never had a issue with the SLP UD pulley. Just make sure to get a LS2 timing chin when you upgrade that cam.
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Old Dec 14, 2011 | 02:27 PM
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Originally Posted by KLR Z
Dude don't buy into it. Get a SLP UD Pulley, its like $200.00 and worth it. I have done many cam swaps on vettes and F-Body's and have never had a issue with the SLP UD pulley. Just make sure to get a LS2 timing chin when you upgrade that cam.
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Old Dec 14, 2011 | 02:42 PM
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I'm trusting my tuner. He said it's the SLP part and he's never had a problem with them. So bang it's on the car.
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Old Dec 14, 2011 | 03:04 PM
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Originally Posted by seebobgo
I'm trusting my tuner. He said it's the SLP part and he's never had a problem with them. So bang it's on the car.
He knows what he is doing then. Any person who does not swap out there UD pulley when doing a cam swap is haha
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