Home » Headers

  Checkout

Header 2.25 Band Clamp
Product ID: HeaderBandClamp
Header 2.25 Band Clamp

Details 

This is  2.25" heavy duty Header Band Clamps. This clamp works on aftermarket headers only.

Price: $26.00
Header Clamps
Product ID: HeaderClamps
Header Clamps

Details 

This is a pair of 2.25" heavy duty header clamps. These work on aftermarket headers only. Replace your old clamps with new ones as a good insurance for them not to break on you.
Price: $59.00
KB Stainless Steel Headers
Product ID: Headers
KB Stainless Steel Headers

Details 

This is a set of GN1Performance "KB HEADERS" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6.They feature HUGE ports and are welded all the way around each tube!  These headers are only available in none polished raw stainless finish. They are complete with gaskets, clamps, and cross pipe.

*These are for competition use only modifications or adjustments maybe required. Header Application Down pipe is needed!
Price: $599.00
KB4 4 Bolt Stainless Steel Headers
Product ID: Headers-KB4
KB4 4 Bolt Stainless Steel Headers

Details 
This is a set of GN1Performance "KB-4 HEADERS" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6.The difference between these and the regular "KB Headers" is a 4 bolt flange rather than a 3 bolt. They feature HUGE ports and are welded all the way around each tube!  These headers are only available in none polished raw stainless finish. They are complete with gaskets, clamps, and cross pipe.
*These are for competition use only modifications or adjustments maybe required
 
Price: $599.00
SE Headers
Product ID: Headers-SE
SE Headers

Details 
This is a set of GN1Performance "SE HEADERS" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6.They feature HUGE ports. These headers are only available in none polished raw stainless finish. They are complete with gaskets, clamps, and cross pipe.
 
 *These are for competition use only modifications or adjustments maybe required
Price: $599.00
Custom Headers and Turbo Combo
Product ID: HeaderTurboCombo
Custom Headers and Turbo Combo

Details 
This is a set of GN1Performance "CUSTOM KB-4 HEADERS WITH FABRICATED 46MM WASTEGATE BLOW OFF AND SUPER T TURBO" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6.The difference between these and the regular "KB Headers" is a 4 bolt flange rather than a 3 bolt. They feature HUGE ports and are welded all the way around each tube!  These headers are only available in none polished raw stainless finish. They are complete with gaskets, clamps, and cross pipe. These headers have been fabricated for a 46mm wastegate blow off that dumps into the atmosphere. The waste gate is a Gn1Performance custom billet 46mm gate. The turbo included in this package is our GN1Performance "SUPER T 72 or 76 (customers preference) TURBO" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This turbo feature a Q Trim wheel, 4" inlet, 4 Bolt flange, 3.5" V Band Exhaust Housing and a 81 Exhaust housing. The kit comes with everything pictured including all clamps and gaskets necessary.
*These are for competition use only modifications or adjustments maybe required
Price: $1,695.00




Web Specials

Why Buy From GN1Performance?


Warranty Information