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-   -   SLP UnderDrive Pulley... (http://www.jeepgarage.org/f6/slp-underdrive-pulley-1975.html)

Frankie 08-09-2009 07:08 PM

SLP UnderDrive Pulley...
 
So I just heard that the SLP UnderDrive Pulley WONT fit the 5.7s?

Anyone have any info on this? Tom?

hemi.jon 08-09-2009 08:41 PM

Re: SLP UnderDrive Pulley...
 
i herd that when they did the GB on the red site, i was gonna buy one way back. until i found out

ducks unlimited 08-11-2009 07:41 PM

Re: SLP UnderDrive Pulley...
 
http://www.modernhorsepower.com/PDGI...c_balancer.jpg
Jeep Srt8 SLP Performance Harmonic Balancer/Underdrive Pulley for 5.7-6.1L
( SRT8100235BMC ) New 25% underdrive balancer for 2005-2007 Jeep SRT8 incorporates a number of high quality features you won't find on any other aftermarket unit and makes up to 9 additional rear wheel horsepower and 10 ft-lbs of rear wheel torque over the stock crankshaft pulley. Jeep SRT8 Pulley features are a pair of extra tall belt retention walls that eliminate the belt slippage issues common with other balancers. Other unique design strengths include a 100% steel construction (other brands use aluminum), integral timing marks and built in puller mounting threads. Includes detailed installation instructions. Features: Up to 9 Rear Wheel Horsepower Increase Up to 10 ft-lbs. Rear Wheel Torque Increase Extra-tall belt-retention "walls"-no more thrown belts! 100% steel construction Lighter than the stock balancer Integral timing marks and puller-mounting threads Does not cause false knock retard or erratic power-curve dips Note: Requires new belt - SRT8GTR-4060798BMC or similar

Frankie 08-11-2009 07:43 PM

Re: SLP UnderDrive Pulley...
 
Yes...That is what we are talking about! Now if you can only find info on if it will work on the 5.7s!

hemi.jon 08-11-2009 07:48 PM

Re: SLP UnderDrive Pulley...
 
Quote:

Originally Posted by ducks unlimited (Post 46008)
Jeep Srt8 SLP Performance Harmonic Balancer/Underdrive Pulley for 5.7-6.1L

right in his description. :D

Frankie 08-11-2009 07:51 PM

Re: SLP UnderDrive Pulley...
 
Quote:

Originally Posted by hemi.jon (Post 46015)
right in his description. :D

IDK...The first sentence is what makes me unsure...

"New 25% underdrive balancer for 2005-2007 Jeep SRT8"

hemi.jon 08-12-2009 11:34 AM

Re: SLP UnderDrive Pulley...
 
yeah but i have been on a few sites that only list things for SRT8 GCs the they have a sub section for 5.7Ls

AIR_RAM 08-23-2009 06:13 PM

Re: SLP UnderDrive Pulley...
 
You may want to look into the ATI SUPERDAMPER... EVERY NASCAR engine runs the same ATI SUPERDAMPER. So they are tested Tried and true to protect your engine from harmfull harmonics... at the same time you can chose your under/overdrive ratios.

Let me know if your intrested and we can set you up with an ATI SUPER DAMPER harmonic balancer.

SPEED SAFE, AIR RAM

TimmyB 08-29-2009 04:38 PM

Re: SLP UnderDrive Pulley...
 
I was just on the Stillen site where they speak about underdrive pulleys. I have no clue about them really though. From my understanding they are lighter and smaller in diameter pullys that put less strain on the motor by turning the accessories slower, correct? But if my alternator is turning slower doesnt that effect my electrical componants? And would a smaller sized belt be needed with these? And does it really make that much of a difference getting them? From the prices I see for one pulley, they want like $150. Maybe someone can explain the concept in short term form so i have a better understanding of it. Thanks.

hemi.jon 08-29-2009 04:48 PM

Re: SLP UnderDrive Pulley...
 
its like a 10hp increase. its smaller, most places sell the belt with the pulley, usually (other car exp) it only effects your power if you are running alot of shit (amps, subs,etc) some people will have a slight head light dim when they stop because of that, but most usually wont see a change. but from what ive seen its never enough to hurt anything you are powering.

Frankie 08-30-2009 07:32 AM

Re: SLP UnderDrive Pulley...
 
Quote:

Originally Posted by hemi.jon (Post 53924)
but from what ive seen its never enough to hurt anything you are powering.

x2, I havent really heard any negs yet myself either!

TimmyB 08-30-2009 01:11 PM

Re: SLP UnderDrive Pulley...
 
It sounds like a good mod then to me. I do have two high powered amps but I think because I have HID's and led fog ligh bulbs mu headlights dont seem to dim at all. What about electric water pump motors, I read the can add as much as 10-20 HP alone.

And with the underdrive, I have yet to come across anything listed for a 3.7 WK. And what pullies would a kit replace, alternator, water pump, and steering pump?


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