Underdrive pulley 10-HP gain. - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

rex113 · 09-27-2009, 07:31 PM

Has anyone installed the 25% underdrive pulley on there car yet,if so have you felt any noticable HP gains.I already have a set of shorties on the car and figured the pulley and CAI would be a good way to go. The pulley claims to add 10HP.

Andro · 09-27-2009, 07:38 PM

Let see some dyno numbers on a underdrive pulley

rex113 · 09-27-2009, 07:45 PM

Quote:

Originally Posted by Red SS

I def plan of doing the pulley. I have it on a Trailblazer SS and it greatly improved the throttle response. As far as the hp goes...I doubt it gets you anywhere near 10 but its worth it for the response. Just make sure you install a new crank bolt!!!

Did you notice an increase in coolant temp at idle?

Number_9 · 09-27-2009, 07:47 PM

I am working with ADM Performance on a replacement pulley for my L99. Hoping to do it this week too. Whenever I get it done though, I will post the dyno graph *and* the track results, which is what really matters to me.

rex113 · 09-27-2009, 07:49 PM

Quote:

Originally Posted by Number_9

I am working with ADM Performance on a replacement pulley for my L99. Hoping to do it this week too. Whenever I get it done though, I will post the dyno graph *and* the track results, which is what really matters to me.

Thanks I cant wait.

rex113 · 09-27-2009, 08:02 PM

Quote:

Originally Posted by Red SS

Rex, with the stock fans and the a/c going its about 215 with an ambient temp of 80 and above. Right around 200 with the ambient temp below 80. Thats with a 160 stat. With the electric fans ( there are two and they both run at once) and with the a/c on, it never gets above 180-185 no matter ambient temp. These numbers are all at idle.

Thanks I guess the fans make up for the slower water pump speed.

NORCAL SS · 01-05-2010, 03:40 PM

Quote:

Originally Posted by Red SS

I def plan of doing the pulley. I have it on a Trailblazer SS and it greatly improved the throttle response. As far as the hp goes...I doubt it gets you anywhere near 10 but its worth it for the response. Just make sure you install a new crank bolt!!!

jamie was this on your 8 second trailblazer ss or low 10 second awd tbss?

SSTony · 01-05-2010, 03:53 PM

i heard the pully only give 5 hp

Number_9 · 01-05-2010, 05:57 PM

Need... replacement... overdrive pulley.. for the L99... oh, and the belt too.

Jason 98 TA · 01-05-2010, 06:23 PM

I have baselined, installed TSP pulley kit, dyno tested, and removed pulled kit for redyno. The pulley added a confirmed 8rwhp....

We stock the setup all the time for you guys looking for one! PM me for pricing!!

Number_9 · 01-05-2010, 06:25 PM

Quote:

Originally Posted by Jason 98 TA

...We stock the setup all the time for you guys looking for one! PM me for pricing!!

For the L99 or LS3? What about the belt?

09-27-2009, 07:31 PM	#1
rex113 Drives: 2010 2ss silver/cyb Join Date: Feb 2009 Location: nj Posts: 200	Underdrive pulley 10-HP gain. Has anyone installed the 25% underdrive pulley on there car yet,if so have you felt any noticable HP gains.I already have a set of shorties on the car and figured the pulley and CAI would be a good way to go. The pulley claims to add 10HP.

09-27-2009, 07:38 PM	#2
Andro NOICE!!! ™ Drives: Force Fed 427 Join Date: Jan 2009 Location: GOT BOOST? Posts: 5,213 View My Garage	Let see some dyno numbers on a underdrive pulley __________________

09-27-2009, 07:47 PM	#4
Number_9 Drives: 2010 2SS/RS L99 Join Date: Mar 2009 Location: Trophy Club, TX Posts: 1,464 View My Garage	I am working with ADM Performance on a replacement pulley for my L99. Hoping to do it this week too. Whenever I get it done though, I will post the dyno graph and the track results, which is what really matters to me. __________________

01-05-2010, 03:53 PM	#8
SSTony Drives: SS Camaro Join Date: Jul 2009 Location: Piscataway NJ Posts: 1,782 View My Garage	i heard the pully only give 5 hp __________________

01-05-2010, 05:57 PM	#9
Number_9 Drives: 2010 2SS/RS L99 Join Date: Mar 2009 Location: Trophy Club, TX Posts: 1,464 View My Garage	Need... replacement... overdrive pulley.. for the L99... oh, and the belt too. __________________

01-05-2010, 06:23 PM	#10
Jason 98 TA Drives: Camaro Join Date: Apr 2009 Location: Texas Posts: 1,670	I have baselined, installed TSP pulley kit, dyno tested, and removed pulled kit for redyno. The pulley added a confirmed 8rwhp.... We stock the setup all the time for you guys looking for one! PM me for pricing!!

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