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  #1  
Old 08-19-2006, 08:17 PM
smurfy1313 smurfy1313 is offline
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pully

getting at pully boys pully think netween the 3.0 and the 3.25 any idea
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Old 08-19-2006, 10:58 PM
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Re: pully

What mods do you have to support a supercharger pulley that small?



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Old 08-20-2006, 01:18 AM
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Re: pully

what mods do i need
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Old 08-20-2006, 09:19 AM
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Re: pully

Quote:
Originally Posted by smurfy1313
what mods do i need
The biggest problem with adding a 3.0 - 3.25" SC pulley is knock retard (KR). You'll have to run colder spark plugs (two ranges). Intake and exhaust mods are required. A re-programmed PCM module from DHP or ZZP will be needed.

Otherwise you will damage the engine and due to the PCM changing advance and timing when KR is detected the car will run crappy.

3.4" is the safest pulley size you can use without the required mods. All you need to do is go one range colder on the spark plugs.



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'08 Pontiac Grand Prix GXP (Dark Slate Metallic) - LS4 5.3L V8
'02 Oldsmobile Alero GL2 - LA1 3400 V6
'99 Buick Regal LS - L36 Series II 3800 V6
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'97 Pontiac Grand Prix GTP - L67 Series II 3800 V6 Supercharged (Sold)
Timeslip 08/12/06

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