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Storefront >> Power Adders >> 3800 Performance M90 Supercharger Kit

3800 Performance M90 Supercharger Kit Price: $999.99
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Flat-Rate UPS Ground Shipping Rate: $45.00

Please allow 4-6 Weeks for item to be shipped as the S/C Housing are custom ported/ assembled per order.

- 1997-2003 Grand Prix GTP
- 1997-2004 Regal GS
- 1996-2003 Bonneville SSEi
- 2004-2005 Monte Carlo SS Supercharged
- 2004-2005 Impala SS

This high performance Ported Eaton M90 GM 3800 Supercharger is a direct replacement for all GM cars using the Eaton M90 generation 3 supercharger. NOTE: this will not fit the 04-06 Grand Prix GTP, as that has an updated supercharger on it. The changes/processes that are made to the supercharger are as followed:

- The supercharger being completely disassembled and rebuilt with new high performance C-3 bearings and hi-strength coupler.

- The supercharger inlet is precision step ported to 75.5 mm and then smooth finished.

- The rough cast material in the inside of the inlet that causes heat and turbulence is smoothed out. Take a look at the inlet picture and notice the casting divot is completely removed with a precision step bore program that launches air to the impellers.

- The supercharger outlet is opened up 19% and all sharp edges are machine smoothed and then hand finished. Air flow characteristics are significantly improved. The outlet porting reduces housing temperature by 38 degrees compared to a non ported housing running a 3.4" pulley.

- The supercharger outlet slits are debured and smoothed, NOT enlarged.

This ported supercharger housing will gain boost and add approx. 15 horsepower depending on your other mods. It will also allow you to run a smaller size pulley with proper exhaust mods because of the increased efficiency and cooler operating temperature.

Included in the Supercharger Kit:
- Rebuilt M90 High Performance Ported Supercharger
- Restored Rotors With Original Epoxy Coating
- Port-matched GM Throttle Body Gasket
- GM Intake Manifold Gasket and 2 O-rings
- GM Supercharger Oil (2 bottle) IMPORTANT: we use ONLY GM Supercharger oil. This oil is a clear synthetic oil made specifically for your supercharger. It is the only oil that should be used in your supercharger. Any other oil in any other container may damage your supercharger over time. We provide instructions to remove your old supercharger and install your new one.

- A supercharger pulley is NOT standard with the supercharger kit. We want our customers to have the ability to choose what they would like. At the bottom, we have links to both our press-on supercharger pulleys and our modular supercharger pulley system.

- This supercharger comes as original GM in natural housing and gray coated nose. Optional custom compressor ceramic sprayed black with polish (as shown) is available for an additional $55.

- To receive your Core Charge on your Supercharger, The S/C must be returned within 30 days upon receipt of your new S/C, and must be in rebuildable/ working condition.

Optional Ceramic Black Paint

Refundable Core Charge
Add $250.00 - Will be returned upon receipt of core


Related Item(s)
Code Name Price   Qty.  
Thrasher Press-On Supercharger Pulleys $69.99
QuickSwap Modular Pulley System $129.99

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