ZZPerformance Northstar Throttle Body Adaptor plate for Gen 3 1996-05 Series II Pontiac Grand Prix Superchargers, Impala, Regals, Monte Carlo, Bonneville, Park Avenue, Riviera, etc.  CNC Machined, Made in USA right here in Michigan!  Includes the mounting bolts.  Common upgrade for people looking to upgrade their stock throttle body to a much larger one.  It will still need adaptor wiring harnesses and PCM tuning in order for it to run to it's potential.  Check out our other auction if you would like the Gen 5 supercharger adaptor plate.

We are the originators who designed this product while others you may see copied our product.  Overtime we have improved our product and always have a superior product.

This allows you to use the 75mm inlet/outlet 2000+ Northstar throttle body with a L67(Gen3) or L32(Gen5) supercharger. The dual pattern design allows for the lightest, cleanest looking adaptor plate on the market.

75mm bore

The Gen 3 supercharger has a 72mm inlet so it is recommended to port the inlet to 75mm to get all of the gains from the larger throttlebody. Then Gen 5 supercharger inlet is already 75mm so no additional porting is required.

Gen 3 superchargers come on the 1996-2005 Series II 3800 engines

Gen 5 superchargers come on the 2004-2007 Series III 3800 engines (04+ "Grand Prix" only)

*MAF and TPS adapters sold separately

Includes: