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Old 07-08-2009, 05:16 PM
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Join Date: Jul 2009
Posts: 5
Default Whipple Kit for 98 GMC Yukon - Will it fit???

I am wondering if anyone of you supercharger gurus can help me with a question. I have a 98 5.7L Yukon, and I have been shopping around for a supercharger. Needless to say I have discovered that the kits for this are no longer being made by whipple. I came across a used supercharger whose instructions state:

Whipple Charger Installation Instructions for Kits #WIK 5302-5302-1 and WIK 5303-5303-1
1996-1997 Chevrolet and GMC CK Series Vehicles with 5.0L and 5.7L engines

So.... the question is will this fit my 98? I was told by a friend that the only difference in those years is those with vortec and those without. So under that assumption, (the kit stating that it is for vortec) would this fit my 98 5.7 vortec? I'd appreciate any thoughts. If anyone has any ideas of any pitfalls that might be an issue between the 96-97 vortecs and installing it on a 98 I would be glad to hear them. Thanks again.

Last edited by tom909; 07-08-2009 at 05:23 PM.
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Old 07-08-2009, 06:01 PM
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Join Date: Jul 2009
Posts: 5
Default Update

Just wanted to give an update. I posed this question to Whipple tech support and was told that the kits for 96-00 were basically the same, the only difference being in the programming between the different years. So the next question, if I was to throw this into the 98 Yukon, how would I address the programming differences? Can you change the chip or something? Any information is appreciated. Thanks.
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Old 07-14-2009, 01:38 PM
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Join Date: Feb 2009
Location: Grande Prairie Alberta Canada
Posts: 89

This kit should work for you, i don`t know what condition its in, i recomend contacting a custom tuner. thats what i did, i intalled larger engine injectors instead of auxillary injectors, then went with a guy that tuned her for me, I didn`t want to rely on and old module and wiring from the kits. much more clean and no wire disruption. been working great so far!
Modifying a truck? Checkout TruckMODCentral
Lysholm 1600AX, 454ci/7.4L V8. Dynoed at 339hp and 475ft/lbs torque at the wheels.
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Old 08-30-2009, 03:26 PM
Join Date: Aug 2009
Posts: 8

I would highly recommend a 12200411 PCM (LS1) swap. It works with a 2001
Chevy Express Van Tune 5.7L
The reason for this is that EFI Live has a custom operating system for this
PCM with boost support. If you want I can send you an Excel file with
instructions for a pin by pin swap
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