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Old 01-22-2007, 01:36 AM   #1
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Default 3.4 Inch Pulley

I'm thinking of getting the 3.4 inch pulley for my 1997 SSEi. It has already has the Intense Standard PCM. Which pulley'* the best? Pulley Boys? Can I replace just the pulley? What about the hub, belt, etc? Please let me know which parts need to be replaced?
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Old 01-22-2007, 01:53 AM   #2
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pulley brand choice is purely opinion.. id go for an INTENSE or ZZP

you can either get a press on, or a MPS (modular pulley system) to be able to change your pulley size easily

with a 3.4 you should run a 715 belt, or get a larger idler pulley

keep in mind you need to get a pulley remover, either buy or rent or borrow from someone

here is the intense MPS
INTENSE™ Modular Pulley System
Code:IMH-090
Price: $99.99




here is the zzp MPS
ZZP Modular Pulley System - $99.99


here is the pulleyboys MPS
Pulley Boys Qwikchange Set - $159.99



then there is the press on for the amature modder

GM 3.8L V6 Supercharged Vehicles ~ $69.95
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Old 01-22-2007, 02:03 AM   #3
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I don't plan on changing the pulley toa smaller size. So all I need is the press on 3.4 inch pulley and the 715 belt or larger idler pulley? My mechanic said he can change the pulley. So I assume he'* got the tool.
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Old 01-22-2007, 02:22 AM   #4
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99.9% sure he does NOT have the right puller... he probably has a 3 jaw puller, which will damage the original..do not use it.. you also need the special pulley to get the pulley on straight... look around for a puller, they are easy to come by...

3.4 press on
pulley puller
715 or larger idler


INTENSE™ Supercharger Pulley Puller and Installation Tool
Code:IPT-100
Price: $79.99



ZZP Supercharger Pulley Puller - $99.99
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Old 01-22-2007, 08:36 AM   #5
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I second/third and fourth the need for the correct puller. We have seen supercharger snouts ruined by the wrong pullers.

Depending on where you are located, there may be a member with a puller near you. This would also save on mechanic fees .
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Old 01-22-2007, 09:08 AM   #6
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For the 3.4 inch pulley I need to replace the 4060725 belt with 4050715? Is that correct?
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Old 01-22-2007, 09:09 AM   #7
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Do NOT trust your mechanic on this one, even if he'* adamant that he can do it.

Show him pics of these pullers. If he doesn't have one, make other arrangements.
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Old 01-22-2007, 09:37 AM   #8
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Yes, changing to a 3.5 or 3.4 pulley a 715 belt or an oversized tensioner should do the trick nicely.
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Old 01-23-2007, 05:57 PM   #9
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Quote:
Originally Posted by crod101
For the 3.4 inch pulley I need to replace the 4060725 belt with 4050715? Is that correct?
No, you need a 4060715 belt.

And I can't tell you how many times I've heard, I'm just doing a pulley and plugs and thats all only to have them modding further and changing pulleys again.
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Old 01-23-2007, 11:43 PM   #10
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Yes. I started out with a 3.4 press on.
Then installed an MPS and now have all 6 sizes from 2.9 to 3.4.
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