[Z06] Under drive pulleys

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Dec 11, 2011 | 05:16 PM

seebobgo

Thread Starter

Racer

Joined: Jul 2004

Posts: 446

Likes: 10

From: Bonita Springs Fl.

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.

Dec 11, 2011 | 06:20 PM

SR-71

Pro

Joined: Sep 2004

Posts: 580

Likes: 1

From: Ironton Ohio

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.

Dec 12, 2011 | 12:42 PM

FourG63 97GST

Melting Slicks

Joined: Mar 2006

Posts: 2,753

Likes: 379

From: South Florida FL

the stocker eventually deteriorate anyway, good insurance

Dec 12, 2011 | 04:31 PM

ipuig

Drifting

Joined: Jan 2008

Posts: 1,722

Likes: 138

From: Florida

St. Jude Donor '09

Quote:

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.

Dec 12, 2011 | 04:50 PM

dgoetz

Instructor

Joined: May 2007

Posts: 114

Likes: 10

Installed 25% underdrive pulley. use the car only for autocross. This summer had overheating problems never had before, had to add larger radiator.

Dec 12, 2011 | 06:50 PM

seebobgo

Thread Starter

Racer

Joined: Jul 2004

Posts: 446

Likes: 10

From: Bonita Springs Fl.

A lot of mixed reviews on this subject all over. I'm going to ease the hammer down and pass on this mod.

Dec 12, 2011 | 10:28 PM

thechosenone

Melting Slicks

Joined: Apr 2010

Posts: 3,203

Likes: 0

Quote:

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.