Underdrive pulley during cam swap?

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Mar 19, 2009 | 02:18 PM

UTfan01SS

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Underdrive pulley during cam swap?

Is paying nearly $200.00 for an underdrive pulley worth the money and do they offer any noticeable power gains? Basically would installing one be a wise choice or should I just use the stock one and get something else better? Just want some opinions from people with an underdrive pulley installed. Thanks

Mar 19, 2009 | 02:41 PM

2002 SS

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i put a UD pulley, just because the stock one had to come off anyway during my cam swap. I like it, i feel faster revs and reduces some stress off the motor..

Mar 19, 2009 | 03:51 PM

bigti99a

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i am with him^. i have one too and felt it was a worthy upgrade. especially if you have it off anyway.

Mar 19, 2009 | 04:32 PM

allngn_c5

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If you got the bucks, complete the mpg package and add an Electric Water Pump too. Add both at the same time and your engine revs so much quicker that you'll have to almost re learn how to drive the car. Very different pesonality post install.

Mar 19, 2009 | 04:55 PM

Z28/2002

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From: Your girl's back door giving her the long stroke while you're at work

Like said above, if you got the cash go ahead and do it

Mar 19, 2009 | 06:02 PM

davered00ss

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I did mine after the cam install. I gained 14rwhp & 12rwtq. Best bang for the buck on the car so far. Definitly do it.

Mar 19, 2009 | 06:24 PM

Beau@SDPC

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How about this.....
http://www.sdparts.com/product/KPBU1...odyandGTO.aspx

free shipping to the 48, free belts, free bolt (arp style)
better deal out there? dont think so.

also ARP bolt = reusable

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Mar 19, 2009 | 08:23 PM

TORCHD 02 TA

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Quote:

Originally Posted by 2002 SS

i put a UD pulley, just because the stock one had to come off anyway during my cam swap. I like it, i feel faster revs and reduces some stress off the motor..

I am with him too

Mar 20, 2009 | 05:08 AM

#10

UTfan01SS

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Quote:

Originally Posted by John@Scoggin

How about this.....
http://www.sdparts.com/product/KPBU1...odyandGTO.aspx

free shipping to the 48, free belts, free bolt (arp style)
better deal out there? dont think so.

also ARP bolt = reusable

Damn thats a deal! I will be calling you guys at the first of next week to order one! Thanks, sounds like a good bolt on worth the money.

Mar 20, 2009 | 06:44 AM

#11

BlackScreaminMachine

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From: Wallingford CT

For LSX stuff, it is worth it.

If it was for a LT1, it would not be worth it from my personal exp.

Mar 20, 2009 | 07:18 AM

#12

teke184

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if you have the cash for it...its hard NOT to do it, since the damn thing is such a pain (and sometimes a risk...busted bolt) to remove.

its worth a little power, but not enough that you'll feel it probably. althuogh the feeling of faster revs is a common thing. but even that's pretty subjective.

Mar 20, 2009 | 07:38 AM

#13

crossroads

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did anyone swap out the alternator pulley also? or can you just leave the stock one on there without any issues?

Mar 20, 2009 | 08:52 AM

#14

UTfan01SS

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Well I guess it wouldn't hurt, faster revs would be nice and I'll have the stock pulley off anyway. I allready have a Fidanza aluminum flywheel so it should be even more snappy.
Cam plus snappy revs = a sick sounding LS1.

Mar 20, 2009 | 09:28 AM

#15

teke184

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funny...i almost posted this:

"if you want REALLY fast revs...try a lightweight flywheel!!"

biggest thing i notice is once you break the tires loose...it spins to redline REALLY fast!!!

Mar 20, 2009 | 10:03 AM

#16

Scoggin Dickey

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From: Lubbock, TX

Quote:

Originally Posted by King Nothing

wow i like that deal! i'll be callin you guys next week if this wheels and tires thing falls through and i actually hope it falls through

It's going on through the end of April, so you guys have got time

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Mar 20, 2009 | 05:12 PM

#17

jmarsa

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How about the '04 LS6 CTS-V ?

I can read, but it might be an omission:

-98 through 02 LS1 Camaro and Trans-Am
-04 through 06 LS1 and LS2 GTO

--JMarsa

Mar 20, 2009 | 05:15 PM

#18

davered00ss

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Quote:

Originally Posted by crossroads

did anyone swap out the alternator pulley also? or can you just leave the stock one on there without any issues?

Did not swap the alt pully. I have not noticed any difference in the voltage either.

Mar 20, 2009 | 06:36 PM

#19

69LT1Bird

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Quote:

Originally Posted by davered00ss

I did mine after the cam install. I gained 14rwhp & 12rwtq. Best bang for the buck on the car so far. Definitly do it.

I know you get a gain but seriously? You had it on a dyno, all tuned and done, swap JUST the pulley, repulled and you gain 14rwhp and 12 rwtq? No other mods including tuning done at the same time?

Hard to believe.

Mar 21, 2009 | 07:54 AM

#20

Red99TA

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From: Topeka, KS

I think they're worth it for how cheap they are. I'm about to do a H/C setup on my vette and I'm definitely doing it at the same time since we have to pull our steering rack to get the pulley out!

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Underdrive pulley during cam swap?

Underdrive pulley during cam swap?

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