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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 10-04-2010, 10:13 AM   #1
Rage
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Underdrive pulley?

Is it worth it? I have heard serious mixed reviews! Any help guys. I only have a CAI, muffler delete. Getting Solo Hi Flow Cats soon too.
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Old 10-04-2010, 10:28 AM   #2
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I have the SLP pulley on mine and haven't had any problems. The car stays between 13 to 14 volts and all accessories work like they did before the install. It's a reasonably easy install, and the hp/dollar ratio is pretty good. I say go for it!

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Old 10-04-2010, 10:30 AM   #3
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What HP gain to they claim for this item? Did you get what they claimed?
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Old 10-04-2010, 10:32 AM   #4
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SLP says 8-10. I haven't had the car on a dyno, but the butt dyno could tell a difference.

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Old 10-04-2010, 10:35 AM   #5
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I second what tarheel34 said and have had no issues since installation this past July. TSP posted approx 9hp gain. I dynoed the car after performing all mods so I do not have a hp gain per mod, but it made a noticable increase from the moment it was installed and we are very pleased with the results. Very worthwhile mod in my opinion.

You may also want to consider adding the ADM race scoop to your CAI, especially if it is a closed box type, and installing a washer bag as well.
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Old 10-04-2010, 10:39 AM   #6
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Sorry to get a little O/T but the ADM scoop and washer bag is next for me. I just can't find a washer bag that I like. Any suggestions?


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Originally Posted by gearhead440 View Post
I second what tarheel34 said and have had no issues since installation this past July. TSP posted approx 9hp gain. I dynoed the car after performing all mods so I do not have a hp gain per mod, but it made a noticable increase from the moment it was installed and we are very pleased with the results. Very worthwhile mod in my opinion.

You may also want to consider adding the ADM race scoop to your CAI, especially if it is a closed box type, and installing a washer bag as well.


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Old 10-04-2010, 10:54 AM   #7
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i think they are... it's roughly 10 REAR WHEEL horsepower gain.... but it gains it throughout the powerband... not just peak. I will take 10 hp across the board over 15 hp peak any day of the week.
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Old 10-04-2010, 11:34 AM   #8
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http://www.camaro5.com/forums/showth...ght=underdrive

Thought I would pass this along in case anyone didn't see it.

I'm up in the are about the pulley. Not sure it's really going to be worth the effort. I would be curious to see if anyone really got 8-10 rwhp.
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Old 10-04-2010, 12:07 PM   #9
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This is the CAI and washer bag install that I did.

http://www.camaro5.com/forums/showthread.php?t=91410
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Old 10-04-2010, 12:12 PM   #10
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Caverman,
I achieved 400 rwhp with these mods, including the TSP UD pulley, so it has to be worth something.

C.A.I cold air intake, ADM race scoop, TSP underdrive pulley, hand ported exhaust manifolds with high-temp coating, rear cat removed, front cat ported for 3 inch inlet pipe with header wrap, polished throttle body, Mobil 1 trans fluid, Royal Purple gear lube in rear, Rev Xtreme catch can, stock exhaust system from cats back including stock mufflers.

http://www.camaro5.com/forums/showthread.php?t=106599
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Old 10-04-2010, 01:20 PM   #11
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Quote:
Originally Posted by caverman View Post
http://www.camaro5.com/forums/showth...ght=underdrive

Thought I would pass this along in case anyone didn't see it.

I'm up in the are about the pulley. Not sure it's really going to be worth the effort. I would be curious to see if anyone really got 8-10 rwhp.
These are the instructions that I used when I installed mine. Worked like a charm!



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Old 10-04-2010, 01:21 PM   #12
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Quote:
Originally Posted by gearhead440 View Post
This is the CAI and washer bag install that I did.

http://www.camaro5.com/forums/showthread.php?t=91410
Thanks! That's the one I'm gonna go with... Did you use the stock washer motor?


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Old 10-04-2010, 01:30 PM   #13
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We have dyno tested these a few times in the past. They gain power, are relatively cheap, and don't have any side effects. What more could you ask for?
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Old 10-04-2010, 02:37 PM   #14
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Tarheel34,
Regarding the washer bag, everything I did, including part numbers and prices, was in the post.

"ADM scoop from ADM Performance: $77 shipping included
Black CAI cold air intake, Apex-Speed: $449 shipped
65-66 Mustang windshield washer bag install kit, CJ Pony Parts, P/N WWK2: $24 shipped
Electric windshield washer pump, Summit Racing, ANCO P/N 65-01: $15
Total cost approximately $580, including various tie wraps, heat shrink, etc."

SMGSS,
Yes, the UD pulley is a very effective mod.
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Old 10-04-2010, 05:37 PM   #15
tarheel34
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Sorry about that... I was on my phone and didn't read through the whole thing. My fault! But I really do appreciate it!

Quote:
Originally Posted by gearhead440 View Post
Tarheel34,
Regarding the washer bag, everything I did, including part numbers and prices, was in the post.

"ADM scoop from ADM Performance: $77 shipping included
Black CAI cold air intake, Apex-Speed: $449 shipped
65-66 Mustang windshield washer bag install kit, CJ Pony Parts, P/N WWK2: $24 shipped
Electric windshield washer pump, Summit Racing, ANCO P/N 65-01: $15
Total cost approximately $580, including various tie wraps, heat shrink, etc."

SMGSS,
Yes, the UD pulley is a very effective mod.
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Old 10-04-2010, 06:05 PM   #16
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Anyone got the link for who sells the UD pulley ?
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Old 10-04-2010, 07:09 PM   #17
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I got mine from Maryland Speed. It comes with the pulley, and a new GM bolt. I've ordered from them numerous times and my items always arrive in 2 days. HIGHLY RECOMMEND!!!
* http://bit.ly/ceoeqq

Texas Speed has the full kit (Pulley, Belts, Bolt, and all)
* http://bit.ly/aJnuzd
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Old 10-05-2010, 06:13 AM   #18
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I went with Texas Speed kit because it included the belts as well.
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