Minimum Whipple pulley size for 6 rib belt - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

LastGen5 · 09-11-2016, 02:59 AM

Sorry if this information is somewhere else on the site - if so, I couldn't find it.

I am wondering what size Whipple pulley I can run on the 6 rib belt. I'm pretty sure 3.875 is okay but not sure about 3.75.

Anyone with some real experience with this?

Kiwi_Camaro_2010 · 09-11-2016, 04:56 AM

I've used 3.625" on 6 rib with no slippage, had to use smaller dia belt & adjust pulleys, I have a 3.375 I'm gona try next at next meet.

LastGen5 · 09-11-2016, 05:12 AM

Quote:

Originally Posted by Kiwi_Camaro_2010

I've used 3.625" on 6 rib with no slippage, had to use smaller dia belt & adjust pulleys, I have a 3.375 I'm gona try next at next meet.

That's perfect - thank you. My motor is still stock hence won't be going that small on the pulley, but it is good to know that I could go a bit lower without spending more $$ on an 8 or 10 rib setup.

Mr. Nasty · 09-11-2016, 09:20 AM

I have been running 3.75 pulley with the six rib over 4 years. With many WOT pulls on it and no slippage.

avido · 09-11-2016, 10:42 AM

I used the 3.750 with slippage I think because of the belt size. I just got a 3.625 and a shorter belt. I'love try soon and we will see

09-11-2016, 02:59 AM	#1
LastGen5 Manual Guy - Until Now... Drives: 2018 ZL1 A10 Join Date: May 2015 Location: Sugar Land, TX Posts: 120 View My Garage	Minimum Whipple pulley size for 6 rib belt Sorry if this information is somewhere else on the site - if so, I couldn't find it. I am wondering what size Whipple pulley I can run on the 6 rib belt. I'm pretty sure 3.875 is okay but not sure about 3.75. Anyone with some real experience with this?

09-11-2016, 04:56 AM	#2
Kiwi_Camaro_2010 Drives: Camaro 2SS/RS 2010 L99 Join Date: Jul 2012 Location: New Zealand Posts: 173 View My Garage	I've used 3.625" on 6 rib with no slippage, had to use smaller dia belt & adjust pulleys, I have a 3.375 I'm gona try next at next meet. __________________ Camaro 2SS/RS 2010 / L99 / Whipple SC /Dynatech Headers & Catts (gutted), ID 850 injectors, ZL1 fuel pump +BAP & ADM pump controller, ZR1 3Bar MAP, Dual Elite Catch Cans, 91 octane ,Eibach sway bar kit , Driveshaft loop, oil cooler delete, ADM dual gauges (AFR/Boost) LC1 wideband controller, D/D, ARP stud kit ,Callies forged slayer crank 3.622", callies ultra rods, wiseco forged pistons, L99-LS3, rollmaster double row steel timing set & comps cam timing cover,blower cam 630/660 lift,3/8 pushrods, pac gear 8deg, yella terra ultra lites. LS9 head gaskets. Texas speed custom oil pump. Asm by me.

09-11-2016, 09:20 AM	#4
Mr. Nasty Emerald Coast Camaros Drives: 2010 RS/SS Rally Yellow & 68 SS Join Date: Dec 2012 Location: Woodville,FL. Posts: 1,814	I have been running 3.75 pulley with the six rib over 4 years. With many WOT pulls on it and no slippage. __________________ Best @ 586/525 =10.41 @ 133 AS OF 12/13/14>633 RWHP =10.22@135 AS OF 1/31/15 @ 633 RWHP=10.16@135 AS OF 1/29/16 @ 633 RWHP=10.10@136 TOPED 700 PASSES AFTER F.I. AND STILL ON THE ORIGIANAL STOCK AXLE & DIFF

09-11-2016, 10:42 AM	#5
avido Drives: camaro ss\rs Join Date: Jun 2014 Location: Italia Posts: 755	I used the 3.750 with slippage I think because of the belt size. I just got a 3.625 and a shorter belt. I'love try soon and we will see __________________ 2014 camaro SS Whipple powered ,3.750 pulley,ID850, CAI,Flowmaster American Thunder exhaust,MGW racing shifter,Bo White ported tb,MightyMouse Catch Can,Vitesse throttle controller,GM 3.91 rear end, Dynatech longtube haders, BTR Pd cam,Fluidampr stock pulley,ZL1 fuel pump and ADM fpcm, Phastek scoop and fluid thank relocation Bmr Motor mount . Tuned by Mastuning