Belt Size for 3.2" Magnacharger Pulley - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

ramiloutfi · 07-02-2013, 02:45 AM

Hi Guys,

I have a Maggie with 3.6" pulley and want to upgrade to 3.2".

I've searched everywhere possible and have no clue what belt size I should get.

If any of you know what size I should get and what are the best brands that would be great.

I have to get it right since I'm ordering it to Dubai

- yes it's super hot here

Supercharged SS · 07-02-2013, 04:04 AM

6 or 8 rib?

ramiloutfi · 07-02-2013, 04:25 AM

Quote:

Originally Posted by Supercharged SS

6 or 8 rib?

6 rib

Supercharged SS · 07-02-2013, 05:17 AM

Quote:

Originally Posted by ramiloutfi

6 rib

Don't waste your time. That pulley will cause you beat slip. As low as you'll want to go with a 6 rib is a 3.4. And with that I'd recommend a JRE super tensioner.

ramiloutfi · 07-02-2013, 05:20 AM

Quote:

Originally Posted by Supercharged SS

Don't waste your time. That pulley will cause you beat slip. As low as you'll want to go with a 6 rib is a 3.4. And with that I'd recommend a JRE super tensioner.

Are you 100% sure about that? Coz the tuner seems to think that i can go as far as 3.2" any smaller then I would require the 8 rib kit.

Supercharged SS · 07-02-2013, 05:22 AM

Quote:

Originally Posted by ramiloutfi

Are you 100% sure about that? Coz the tuner seems to think that i can go as far as 3.2" any smaller then I would require the 8 rib kit.

Go ahead listen to your tuner. And then have him pay for the 3.4 when you need it.

ramiloutfi · 07-02-2013, 05:41 AM

Quote:

Originally Posted by Supercharged SS

Go ahead listen to your tuner. And then have him pay for the 3.4 when you need it.

Thanks

but any idea of the belt size and brand I should be aiming at for 3.2"?

I decided to buy an 8 rib kit

old motorhead · 07-02-2013, 07:03 AM

Overdrive the rears. With a 3.8" front and overdriven rears, it's like running a 3.27 front with 1:1 rear pulleys. Much less likely to slip with the 3.8" front.

ramiloutfi · 07-02-2013, 07:43 AM

Quote:

Originally Posted by old motorhead

Overdrive the rears. With a 3.8" front and overdriven rears, it's like running a 3.27 front with 1:1 rear pulleys. Much less likely to slip with the 3.8" front.

I'm a total dumbo when it comes to that, you're gonna have to explain what you mean. Sorry

Turbo99 · 07-02-2013, 07:57 AM

I ran a 3.2 6 rib, it did slip some but no a lot, also have the JRE super tensioner. I went to a 10% OD and 8 rib and it still slips alittle but I make 10.5-11 psi. I think I run a 93.75-94" belt.

old motorhead · 07-02-2013, 08:38 AM

Quote:

Originally Posted by ramiloutfi

I'm a total dumbo when it comes to that, you're gonna have to explain what you mean. Sorry

You have two pulleys on the back of your blower. Both 3.25". That's driving the blower at a 1:1 ratio. A set of overdrive pulleys would be a 3.49" pulley driving a 3" pulley. That will turn your blower about 16% faster than the 1:1 setup. If you do that, you can use a 3.8" pulley on the front. Bigger pulleys have more belt wrap, therefore, less likely to slip.

All you need to buy are the pulleys. The bolts and the rear belt are reused. You can probably reuse the serp belt that you're currently using.

ramiloutfi · 07-03-2013, 12:44 AM

Quote:

Originally Posted by old motorhead

You have two pulleys on the back of your blower. Both 3.25". That's driving the blower at a 1:1 ratio. A set of overdrive pulleys would be a 3.49" pulley driving a 3" pulley. That will turn your blower about 16% faster than the 1:1 setup. If you do that, you can use a 3.8" pulley on the front. Bigger pulleys have more belt wrap, therefore, less likely to slip.

All you need to buy are the pulleys. The bolts and the rear belt are reused. You can probably reuse the serp belt that you're currently using.

Wow - that's some great info! Thanks

linehand7 · 07-03-2013, 08:10 AM

stay with your belt and adjust your idler pulley ( the one that is just below and to the right of the drive pulley) slide it to the left about 1/2" to 3/4", this will give you more belt wrap around the pulley and will help with belt slippage. but a jannetty tensioner will deffinently help. with my set up and elevation a 3.8 pulley on my maggie is only putting out 5 lbs, with a 3.2 its putting out 9 lbs and no belt slippage, but i have several tunes for my car (and pulleys) and only run the 3.2 pulley at the track

11syn3rgy · 07-03-2013, 08:17 AM

Quote:

Originally Posted by old motorhead

You have two pulleys on the back of your blower. Both 3.25". That's driving the blower at a 1:1 ratio. A set of overdrive pulleys would be a 3.49" pulley driving a 3" pulley. That will turn your blower about 16% faster than the 1:1 setup. If you do that, you can use a 3.8" pulley on the front. Bigger pulleys have more belt wrap, therefore, less likely to slip.

All you need to buy are the pulleys. The bolts and the rear belt are reused. You can probably reuse the serp belt that you're currently using.

In case you decide to go the rear "OD" route, I just wanted to let you know that I have a brand new set that has never been used. PM me for details.

07-02-2013, 02:45 AM	#1
ramiloutfi Drives: Camaro ZL 550 SLP Join Date: Jul 2012 Location: Dubai, UAE Posts: 49	Belt Size for 3.2" Magnacharger Pulley Hi Guys, I have a Maggie with 3.6" pulley and want to upgrade to 3.2". I've searched everywhere possible and have no clue what belt size I should get. If any of you know what size I should get and what are the best brands that would be great. I have to get it right since I'm ordering it to Dubai - yes it's super hot here __________________ Cold-Air Inductions® System \| ARH 1 7/8" Headers w/o Cats \| SLP PowerFlo-X Crossover Pipe \| SLP Powerflo Axle Back Exhaust \| TVS2300 Magnacharger w/ 3.0" pulley \| NEP 223/235 Custom Cam \| Lunati Gold Dual Valve Springs \| Manley 7.400" Pushrods \| Injector Dynamics ID850 Injectors \| Nick Williams 102MM FBW Throttlebody \| Eibach springs w/ 1" drop \| SLP Adjustable sway bars \| Forgestar F14 20" \| Nitto NT555R tires \| Baer Drilled & Slotted Rotors \| Hawk HPS Break Pads \| Lingenfelter 3.91 Gear Kit

07-02-2013, 07:57 AM	#10
Turbo99 Drives: 08' F250 Diesel & 10' Camaro 2SS Join Date: Nov 2010 Location: Gainesville,Fl Posts: 1,362 View My Garage	I ran a 3.2 6 rib, it did slip some but no a lot, also have the JRE super tensioner. I went to a 10% OD and 8 rib and it still slips alittle but I make 10.5-11 psi. I think I run a 93.75-94" belt. __________________ 08' F250 CCSB 6.4L Diesel White & Black, Blacked out, 580RWHP @ 55psi 13.21 @ 101mph 10' Camaro 2SS LS3 M6 White & Black, Blacked out, 684 RWHP & 633 FT.LBS @ 10psi 10.82@130mph TVS2300 ,Hendrix Street Slayer Twin Carbon Clutch, Dana 60 3.73, DSS 1400HP Axles,JRe cam & LaMotta Performance tuned,LPE Fuel, AI Super Chiller,MT ET Streets

07-02-2013, 04:04 AM	#2
Supercharged SS Account Suspended Drives: 2010 Camaro Join Date: Feb 2010 Location: Sandy Hook, CT Posts: 11,927	6 or 8 rib?

07-02-2013, 07:03 AM	#8
old motorhead Drives: Maggie blown LS3 vette Join Date: Aug 2009 Location: SE TX Posts: 1,490	Overdrive the rears. With a 3.8" front and overdriven rears, it's like running a 3.27 front with 1:1 rear pulleys. Much less likely to slip with the 3.8" front.

07-03-2013, 08:10 AM	#13
linehand7 Drives: 03 duramax 01impala 2010 2ssrs Join Date: Feb 2009 Location: lead sd Posts: 142	stay with your belt and adjust your idler pulley ( the one that is just below and to the right of the drive pulley) slide it to the left about 1/2" to 3/4", this will give you more belt wrap around the pulley and will help with belt slippage. but a jannetty tensioner will deffinently help. with my set up and elevation a 3.8 pulley on my maggie is only putting out 5 lbs, with a 3.2 its putting out 9 lbs and no belt slippage, but i have several tunes for my car (and pulleys) and only run the 3.2 pulley at the track