Northstar Adapter Plate
ZZ-NSAP-G3 $69.99This 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:
- Billet aluminum adapter plate
- Stainless socket cap bolts
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:
- Billet aluminum adapter plate
- Stainless socket cap bolts
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3800
