whipple BIG tensioner part number - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

SSlim · 06-05-2014, 10:24 AM

ACDelco 10055897 is the stick replacment.

The 466 is beefier and seems to hold more tention on the belt. The catch is you need to swap the pulley and stuff, but that's easy. And I found one on amazon for only $20 more so felt it was worth the upgrade.

WiredAVS · 06-05-2014, 12:52 PM

SSlim, little confusion on my part here. I thought the 89270 was the unit that Whipple supplied?

Are you saying the ACDelco 10055897 and the Dayco 89270 are the same?

I am clear that the 89446 is a better unit than the 89270 but will require slight modification for alignment of the pulley.

Just not clear on the AC Unit, you say stock replacement, as in stock no Supercharger?

Thanks SSlim

SSlim · 06-05-2014, 12:58 PM

Jeff at Whipple told me that ACD was a direct replacement. Said it was an AC tensioner off an earlier corvette.

That being said whipple used 2 different tentioners. that ACD is what was on the earlier model whipple (which is what I had).

Z1 Dunn · 06-05-2014, 01:21 PM

can anyone confirm if the old tensioner bracket is diff from the new one? I would like to upgrade to the new tensioner but I'm not sure if the new tensioner will bolt up to the old bracket.

SSlim · 06-05-2014, 01:25 PM

I used the new and it bolted right up

WiredAVS · 06-05-2014, 03:00 PM

I'm with you now SSlim...just confirmed with whipple that the 89270 is the current tensioner that is supplied with the kit.

Being that your kit came with ACD tensioner (older whipple kit), I'm wondering if any shimming of the pulley would be required if replacing the Dayco 89270 (newer whipple kit). The 89270 seems to be a little harder to come by and I found a couple of places that have the 89446 locally.

If I go with the 89446 I'll report back. Food for Thought

4U2NV-SS · 07-17-2018, 01:36 PM

BACK FROM THE DEAD.....I called Whipple and they would not give me any part numbers for a replacement tensioner.

Looking for a better tensioner since mine seems to be going out.
Is DAYCO 89446 the one I need to get and swap the pulleys?

Thanks

Mzbalur · 02-03-2026, 05:04 AM

Quote:

Originally Posted by WiredAVS

I'm with you now SSlim...just confirmed with whipple that the 89270 is the current tensioner that is supplied with the kit.

Being that your kit came with ACD tensioner (older whipple kit), I'm wondering if any shimming of the pulley would be required if replacing the Dayco 89270 (newer whipple kit). The 89270 seems to be a little harder to come by and I found a couple of places that have the 89446 locally.

If I go with the 89446 I'll report back. Food for Thought

How did it go ? I have a 2010 2SS Camaro . It was modded by phastek performance in 2013 with the 2.9L whipple supercharger kit . The 89270 is extremely hard to come by these days especially since I have the 6 rib old setup . Did the 89446 work perfectly fine or did you have to swap the pulley ? What pulley did you end up using btw ?

06-05-2014, 10:24 AM	#15
SSlim Drives: 2011 Cyber Grey 1SS/RS A6 Join Date: Aug 2011 Location: Needville TX Posts: 228	ACDelco 10055897 is the stick replacment. The 466 is beefier and seems to hold more tention on the belt. The catch is you need to swap the pulley and stuff, but that's easy. And I found one on amazon for only $20 more so felt it was worth the upgrade. __________________ Whipple, GT9 cam, LS3 conversion, ZL1 pistons, ZL1 rods, Circle D converter, Stage 3 trans, Tuned by Pat G, CAI inc, TPS headers, posi mod, Dynomax bullet cat back, VMAX TB, ADM Scoop, RX catch can, Eibach prokit plus, Eurotek Mesh 33 wheels, P13w DRLs, Pioneer/Massive Audio/Vibe/JL interior goodies. 613 RWHP/596 TQ

06-05-2014, 12:52 PM	#16
WiredAVS Drives: '21 TRx '22 ZLe Join Date: Oct 2013 Location: Louisiana Posts: 133	SSlim, little confusion on my part here. I thought the 89270 was the unit that Whipple supplied? Are you saying the ACDelco 10055897 and the Dayco 89270 are the same? I am clear that the 89446 is a better unit than the 89270 but will require slight modification for alignment of the pulley. Just not clear on the AC Unit, you say stock replacement, as in stock no Supercharger? Thanks SSlim __________________ 2014 Camaro 2SS/1LE AGM/768rwhp Recaro's, Custom Autometer Gauges, Hotchkis 1" Lowering Coils, CAi Intake, Elite Catch Can's, 1 7/8" StainlessWorks LT's w/Hi Flo Cat's mated to factory NPP Exhaust, 160* Thermo, NightFury Cam, 2.9l Whipple on Meth @ 11lbs, JoeGibbs LS30 in the CrankCase, Built by Nick, Steven, and Tuned By Shawn at Lethal Racing....

06-05-2014, 12:58 PM	#17
SSlim Drives: 2011 Cyber Grey 1SS/RS A6 Join Date: Aug 2011 Location: Needville TX Posts: 228	Jeff at Whipple told me that ACD was a direct replacement. Said it was an AC tensioner off an earlier corvette. That being said whipple used 2 different tentioners. that ACD is what was on the earlier model whipple (which is what I had). __________________ Whipple, GT9 cam, LS3 conversion, ZL1 pistons, ZL1 rods, Circle D converter, Stage 3 trans, Tuned by Pat G, CAI inc, TPS headers, posi mod, Dynomax bullet cat back, VMAX TB, ADM Scoop, RX catch can, Eibach prokit plus, Eurotek Mesh 33 wheels, P13w DRLs, Pioneer/Massive Audio/Vibe/JL interior goodies. 613 RWHP/596 TQ

06-05-2014, 01:25 PM	#19
SSlim Drives: 2011 Cyber Grey 1SS/RS A6 Join Date: Aug 2011 Location: Needville TX Posts: 228	I used the new and it bolted right up __________________ Whipple, GT9 cam, LS3 conversion, ZL1 pistons, ZL1 rods, Circle D converter, Stage 3 trans, Tuned by Pat G, CAI inc, TPS headers, posi mod, Dynomax bullet cat back, VMAX TB, ADM Scoop, RX catch can, Eibach prokit plus, Eurotek Mesh 33 wheels, P13w DRLs, Pioneer/Massive Audio/Vibe/JL interior goodies. 613 RWHP/596 TQ

06-05-2014, 03:00 PM	#20
WiredAVS Drives: '21 TRx '22 ZLe Join Date: Oct 2013 Location: Louisiana Posts: 133	I'm with you now SSlim...just confirmed with whipple that the 89270 is the current tensioner that is supplied with the kit. Being that your kit came with ACD tensioner (older whipple kit), I'm wondering if any shimming of the pulley would be required if replacing the Dayco 89270 (newer whipple kit). The 89270 seems to be a little harder to come by and I found a couple of places that have the 89446 locally. If I go with the 89446 I'll report back. Food for Thought __________________ 2014 Camaro 2SS/1LE AGM/768rwhp Recaro's, Custom Autometer Gauges, Hotchkis 1" Lowering Coils, CAi Intake, Elite Catch Can's, 1 7/8" StainlessWorks LT's w/Hi Flo Cat's mated to factory NPP Exhaust, 160* Thermo, NightFury Cam, 2.9l Whipple on Meth @ 11lbs, JoeGibbs LS30 in the CrankCase, Built by Nick, Steven, and Tuned By Shawn at Lethal Racing.... Last edited by WiredAVS; 06-05-2014 at 03:18 PM. Reason: added info

06-05-2014, 01:21 PM	#18
Z1 Dunn Account Suspended Drives: orange ss camaro Join Date: Dec 2013 Location: louisiana Posts: 30	can anyone confirm if the old tensioner bracket is diff from the new one? I would like to upgrade to the new tensioner but I'm not sure if the new tensioner will bolt up to the old bracket.

07-17-2018, 01:36 PM	#21
4U2NV-SS Drives: 1999 Camaro SS Join Date: Apr 2016 Location: Denver Posts: 275	BACK FROM THE DEAD.....I called Whipple and they would not give me any part numbers for a replacement tensioner. Looking for a better tensioner since mine seems to be going out. Is DAYCO 89446 the one I need to get and swap the pulleys? Thanks