What tensioner are you running on your supercharged GT? - MustangForums.com

Go Back   MustangForums.com > Ford Mustang Tech > 2005-2014 Mustangs > GT S197 General Discussion > 4.6L V8 Technical Discussions

4.6L V8 Technical Discussions Any questions about engine, transmission, or gearing can be asked here!

What tensioner are you running on your supercharged GT?

Thread Tools Search this Thread
Old 12-18-2011, 02:11 PM   #1
4th Gear Member
Lethaldosage423's Avatar
Join Date: Apr 2008
Vehicle: 05 DodgeRam 2500 CUMMINS
Location: Southern California
Posts: 1,632
Default What tensioner are you running on your supercharged GT?

Ive been hearing a lot about people throwing belts especially on the whipples.

From what i understand its because they re use the stock tensioner but modify it slightly

is anyone running an aftermerket tensioner? Does it help?

I know steeda do a whole system but its well over 1200k. thats a bit much.

I have however seen this one that caught my eye:
2014 black Mustang5.0 track package, Recaros.
Roush axle back with 4.5 tips /Boss diffuser
Jlt can
Airraid+Bama 91
Barton twin post shifter bracket
Whiteline adjustable sway bar
Whiteline lower control arm relocation brackets
Whiteline adjustable lower control arms
Airlift Performance air bags

05 white Dodge 2500 Cummins sold and missed
So Far>> http://mustangforums.com/forum/2010-...ng-so-far.html
Lethaldosage423 is offline   Reply With Quote
Old 12-18-2011, 02:26 PM   #2
4th Gear Member
danzcool's Avatar
Join Date: Oct 2008
Vehicle: 2008 GT
Location: CA
Posts: 1,810

I'm running the thump racing one (except with a 90mm pulley). On the steeda, they weld an aluminum pate to the stock tensioner, the thump is all billet aluminum. Not sure if it matters all that much but my mind was a bit more at ease with a solid piece rather than a modified piece.

Last edited by danzcool; 12-18-2011 at 02:30 PM.
danzcool is offline   Reply With Quote
Old 12-18-2011, 03:05 PM   #3
Acerbus 2.0
2nd Gear Member
Join Date: Nov 2009
Vehicle: 2008 Mustang GT/CS
Location: PR
Posts: 329

Stock tensioner with with Edelbrock's bolt-in tensioner brace.
So far so good. No belt shenanigans.
POWER: Paxton NOVI SL2200, DR cams, CMCV's, TCI SuperSF trans, Dynamic Racing Trans TC, alum. driveshaft, 3.73 gears, ARH LT headers, o/r xpipe, Borla Stingers, 180*t-stat, Brenspeed 91oct
HANDLING: FRPP 1" springs, Koni STR.T, Eibach swaybars, BMR adj. panhard bar/lca relocation brackets, J&M upper/lower arms, Saleen 14" brakes, TSW Interlagos 18x9.5, Nexen N3000 255/45/18 X4
LOOKS: GT/CS lower grill, 14" antenna, Autometer A/F & Boost gauges, GT500 spoiler, Rearseat delete
Acerbus 2.0 is offline   Reply With Quote
Old 12-18-2011, 04:39 PM   #4
2nd Gear Member
Join Date: Mar 2011
Vehicle: Saleen S/C
Location: Canada
Posts: 158

I run that Steeda heavy duty. I'm not sure if it helps with throwing belt on a Whipple. I was told to use one because you can twist or break the stock tensioner with a S/C.
tbar is offline   Reply With Quote
Old 12-18-2011, 04:46 PM   #5
2nd Gear Member
Join Date: Sep 2006
Posts: 301

Stock tensioner for 5-1/2 years with no issues.
06 GT Redfire Manual. Saleen SC. Custom Predator tune by Adam @ ST Motorsports, San Bernardino, CA.
RedFire281 is offline   Reply With Quote
Old 12-19-2011, 11:24 AM   #6
2nd Gear Member
Scott2's Avatar
Join Date: Sep 2009
Vehicle: 2008 Ford Mustang GT/CS
Location: Ontario, Canada
Posts: 345

I have had no issues with a UPR Billet Tensioner on my Vortech V3 equipped car. In the picture shown it has a UPR Pulley, I am currently using a Carmen Goudey custom 76mm billet pulley.

Click the image to open in full size.
GT/CS Auto – Mods Courtesy: AeroForce, Agent 47, Air Lift Performance, AM, American Racing Headers, Amsoil, Anzo, ATI, Auto Meter, Axle Exchange, Baer, BMR, Canton, Cervini's, CPC, Circle D Specialties, DaSilva Racing, DiabloSport, FRPP, JLT Perf, Fore, Magnaflow, Maximum Motorsports, M&H, Meziere, Moroso, MT, Nitto, Performance Automatic, Pioneer, Russell, SCT, SHR, Shelby Perf Parts, SOS, Stack Racing, Steeda, StopTech, Strange Engineering, TA Perf, TCI Auto, TSS, UPR, Vossen & Vortech.
Scott2 is offline   Reply With Quote
Old 12-19-2011, 11:47 AM   #7
3rd Gear Member
moochman4life's Avatar
Join Date: Jul 2009
Vehicle: I hate decals.
Location: Norfolk, VA
Posts: 509

Belt slipped like a **** on the stock tensioner after just 2 track days and some street fun (about 9 months or so). Switched to Roush and haven't had an issue (to include 7 track days, road trips and numerous street parlays) over the course of a year.
06 GT 5spd / Weekend Grocery Getter-Turned Track Toy /

98 Contour SVT / Baby-Transporting DD /
moochman4life is offline   Reply With Quote
Old 12-19-2011, 02:22 PM   #8
5th Gear Member
Diabolical!'s Avatar
Join Date: Jul 2006
Vehicle: 2006 Mustang GT
Location: New Orleans
Posts: 4,495

I actually bent my stock tensioner at the drag strip. Replaced it with a thump_rrr. The Thump really is the ***** best tensioner you can buy, but it's not a cheap item.

Whipple-12psi 10 Rib Pulley Kit-McLeod RXT & Steel Flywheel-UPR Rod End LCAs, UCA, Spherical Bearing, Panhard Bar, K-member + Front Swaybar Delete-Metco LCA Relo Brackets-BMR Xtreme Anti Roll-Spydershaft-Race Star Wheels-MGW-PMP Line Locks-Stanghi O/R X-Odyssey 10 lb Battery-Moroso Separator-Eibach Front/CJ Rear Drag Springs-Strange Adjustable Shocks and Struts-MSD 2 Step-etc. 11.29@123 1.59 60'
Diabolical! is offline   Reply With Quote
Old 12-19-2011, 03:06 PM   #9
Multi-Tasking Moderator!
mygt500's Avatar
Join Date: Nov 2006
Vehicle: 2006 Ford Mustang GT
Location: Detroit Rock City!
Posts: 15,617

Originally Posted by Diabolical! View Post
I actually bent my stock tensioner at the drag strip. Replaced it with a thump_rrr. The Thump really is the ***** best tensioner you can buy, but it's not a cheap item.
I agree....nothing will bend that beast!

2006 Mustang GT with Cervinis Kit
Whipple Crew member
H.O. S/C 465 RWHP and 440RWTQ

link to Michigan regional chapter


mygt500 is offline   Reply With Quote
Old 12-19-2011, 10:28 PM   #10
5th Gear Member
tx_zstang's Avatar
Join Date: May 2007
Vehicle: 2006 Turbo V6; 2005 V6->V8 swap beast
Location: Central Texas
Posts: 2,384

The stock tensioner is too weak for handling the excessive changes in belt tension on with blowers, especially during shifts with a manual transmission (autos are not as bad but have similar issues).

I run a Roush one on my automatic, but also have a thumprr one that I bought as was going to use (will probably sell it for like 175 here soon).

Get some kind of upgrade over stock.
Mike - 2005 Stroked/Forged/Cammed V8 (5.0L.); twin-turbos . [previous: 2.6 KB, in sig pic]
- 2006 4.0 V6 with PH Turbo and TR6060
tx_zstang is offline   Reply With Quote


Similar Threads
Thread Thread Starter Forum Replies Last Post
2010 Mustang GT, Supercharged, 8700 miles, SE Pennsylvania Galactic Mustangs For Sale 8 08-28-2016 06:39 PM
2005-2009 Mustang Gt Paxton Supercharger Tuner Kit (New) ernesto-619 Mustang News, Concepts, Rumors & Discussion 0 09-10-2015 02:32 AM
Huge Savings from Lethal Performance.com!(Whipple, McLeod, Kooks, & MUCH MORE..) Boostaddict Lethal Performance 2 09-08-2015 10:56 PM
Matt Farah Takes On Supercharged GT With Seriously Short Gearing MustangForums Editor GT S197 General Discussion 1 09-03-2015 08:14 PM

05, 06, 2000, 40, arm, belt, cam, gt, mustang, pulleys, racing, replacement, tension, tensioner, thump, upr, vortech

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -5. The time now is 09:39 AM.

This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company