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 Cottons Performance Center
 105 Walnut St.
 Agawam, MA 01001
 Ph:  (413) 789-0531
 Fx:  (413) 789-0401
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4340 Steel 3.625 Stroker Crank
Product ID: GN1-3.625
4340 Steel 3.625 Stroker Crank

Details 
This is a GN1Performance "STEEL 3.625 STROKER CRANK " for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This is a narrow journal width crank.
Price: $750.00
Aluminum Pulley Set
Product ID: GN1-APS4
Aluminum Pulley Set

Details 
This is a GN1Performance "4 PIECE BILLET ALUMINUM PULLEY SET" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. These pulleys are CNC machined with a high polished finish. The kit includes the crank pulley, water pump pulley, power steering pulley, and last but not least the alternator pulley. Not only do these pulleys look very nice, but they are also extremely light weight!
Price: $339.00
Aluminum Pulley set
Product ID: GN1-APS6
Aluminum Pulley set

Details 
This is a GN1Performance "6 PIECE BILLET ALUMINUM PULLEY SET" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. These pulleys are CNC machined with a high polished finish. The kit includes the crank pulley, water pump pulley, power steering pulley, tensioner pulley, alt fan, and last but not least the alternator pulley. Not only do these pulleys look very nice, but they are also extremely light weight!
Price: $399.00
4340 Steel 3.400 Stock Stroke Crank
Product ID: GN1-C3.4
4340 Steel 3.400 Stock Stroke Crank

Details 
This is a GN1Performance "STOCK STROKE STEEL CRANK 3.400 " for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6.
Price: $650.00
Aluminum Stock Up Pipe Replacement
Product ID: GN1-SUP
Aluminum Stock Up Pipe Replacement

Details 
This is a GN1Performance "Stock Replacement Up Pipe" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This item is a great upgrade from the factory steel throttle body up pipe. It is polished 2.5" aluminum pipe and also comes with (2) 2.5 hoses and (4) Heavy duty t clamps.
Price: $89.00
Aluminum Upper Radiator Pipe
Product ID: GN1-URP
Aluminum Upper Radiator Pipe

Details 
This is a GN1Performance "1 PIECE ALUMINUM UPPER RADIATOR PIPE" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This pipe comes complete with brand new hoses (2) and clamps(4) to mount on you car today. Its light weight and looks sharp! There are a couple of advantages to this item vs some of the others out on the market. Being that its 1 piece you only have 4 clamps where as others run 6 clamps including a 90 degree bend (more chances for something to slip off or crack). Another thing is you need not worrry about cracked hoses any more!
Price: $95.00



 
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Jack Cotton's 8.90 @ 154MPH 1986 Buick
 T-Type