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Pulley drop

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deejayfb

New member
I have a stock 04 Grand Prix GTP w/ supercharger. I want to upgrade to a 3.6" inch pulley. I was told that I should get a larger idler pulley with the smaller 3.6 inch pulley.

Could someone please tell me what size idler pulley I should buy and do I need to get the PCM tuned for this upgrade?

If I do need to get the PCM tuned, what kind of shop should I go to and what settings should I use?

Also would I need to buy cooler plugs for this mod, or will standard plugs suffice?

Thank you in advance
 
Last edited:


Re: Tuning for a 3.5" pulley upgrade

its not like you need to pick a size. ZZPerformance.com wbodystore.com should have the oversized idler for you. IIRC the stock is 3" and they sell 3.5" no one can tell you for sure if you need tuning to run a 3.6". normally a 3.6 is fine but we always suggest scanning for KR first. if you dont have a way to scan for KR now dont do anything till you can. i feel a scaner should be one of the first mods to buy.
 
Re: Tuning for a 3.5" pulley upgrade

deejayfb said:
I have a stock 04 Grand Prix GTP w/ supercharger. I want to upgrade to a 3.6" inch pulley. I was told that I should get a larger idler pulley with the smaller 3.6 inch pulley.

Could someone please tell me what size idler pulley I should buy and do I need to get the PCM tuned for this upgrade?

If I do need to get the PCM tuned, what kind of shop should I go to and what settings should I use?

Also would I need to buy cooler plugs for this mod, or will standard plugs suffice?

Thank you in advance
Click to expand...

This does not really belong in here. Could you make a new thread in the engine section or just read the stickies in the engine section?
 
Re: Tuning for a 3.5" pulley upgrade

deejayfb said:
I have a stock 04 Grand Prix GTP w/ supercharger. I want to upgrade to a 3.6" inch pulley. I was told that I should get a larger idler pulley with the smaller 3.6 inch pulley.

Could someone please tell me what size idler pulley I should buy and do I need to get the PCM tuned for this upgrade?

If I do need to get the PCM tuned, what kind of shop should I go to and what settings should I use?

Also would I need to buy cooler plugs for this mod, or will standard plugs suffice?

Thank you in advance
Click to expand...

Read the link in my signature, then get back to us.


darkhorizon said:
This does not really belong in here. Could you make a new thread in the engine section or just read the stickies in the engine section?
Click to expand...

This.
 
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