Engine Components

  • 4340 Steel 3.400 Stock Stroke Crankshaft 4340 Steel 3.400 Stock Stroke Crankshaft 4340 Steel 3.400 Stock Stroke Crankshaft 4340 Steel 3.400 Stock Stroke Crankshaft

    4340 Steel 3.400 Stock Stroke Crankshaft

    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.Crank weight is 43lbs!KEEP IN MIND THIS IS A 4340 CRANK SHAFT, NOT 4140. THIS 4340 MATERIAL WILL...

    $799.00
  • 4340 Steel 3.625 Stroker Crankshaft 4340 Steel 3.625 Stroker Crankshaft 4340 Steel 3.625 Stroker Crankshaft 4340 Steel 3.625 Stroker Crankshaft

    4340 Steel 3.625 Stroker Crankshaft

    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.Crank weight is 43lbs!KEEP IN MIND THIS IS A 4340 CRANK SHAFT, NOT...

    $799.00
  • A Rotating Assembly Long Rod Stroker Kit A Rotating Assembly Long Rod Stroker Kit A Rotating Assembly Long Rod Stroker Kit A Rotating Assembly Long Rod Stroker Kit A Rotating Assembly Long Rod Stroker Kit

    A Rotating Assembly Long Rod Stroker Kit

    This is a GN1Performance "LONG ROD STROKER KIT" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. If your looking to be the bully on the track with your turbo 6, this is the kit for you. This kit comes with a...

    $2,399.00
  • A Rotating Assembly Stock Stroke Kit A Rotating Assembly Stock Stroke Kit A Rotating Assembly Stock Stroke Kit A Rotating Assembly Stock Stroke Kit A Rotating Assembly Stock Stroke Kit

    A Rotating Assembly Stock Stroke Kit

    This is a GN1Performance "STOCK STROKE KIT" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This kit comes with a 3.400 stock stroke crank, 5.970 h beam rods, and JE pistons. This kit is the the ultimate...

    $2,199.00
  • A Rotating Assembly Stroker Kit A Rotating Assembly Stroker Kit A Rotating Assembly Stroker Kit A Rotating Assembly Stroker Kit A Rotating Assembly Stroker Kit

    A Rotating Assembly Stroker Kit

    This is a GN1Performance "STROKER KIT" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6.The stroker kit you guys have been waitin for. This kit comes with a 3.625 stroker crank, GN1 5.970 h beam rods, and JE...

    $2,299.00
  • AC Delete Bracket and Pulley AC Delete Bracket and Pulley AC Delete Bracket and Pulley

    AC Delete Bracket and Pulley

    This is a "A/C DELETE PULLEY AND BRACKET COMBO" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This item is to be used when you want to remove the A/C compressor and replace it with a light weight bracket...

    $72.00
  • Aftermarket Timing Cover with High Volume Gear Set Aftermarket Timing Cover with High Volume Gear Set Aftermarket Timing Cover with High Volume Gear Set Aftermarket Timing Cover with High Volume Gear Set

    Aftermarket Timing Cover with High Volume Gear Set

    This is a "After Market Front Timing Cover With built in high volume Oil Pump" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. The cover is a direct replacement. It comes with all the hardware shown in the...

    $249.00
  • Aluminum Heads Aluminum Heads Aluminum Heads Aluminum Heads Aluminum Heads

    Aluminum Heads

    This is a set of "Champion GN1 ALUMINUM HEADS" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. The heads feature stainless valves. these are for competition use and ready to bolt on. They also include the roller valve...

    $3,895.00
  • ARP Flex Plate Bolts ARP Flex Plate Bolts ARP Flex Plate Bolts ARP Flex Plate Bolts

    ARP Flex Plate Bolts

    This is "A 6 PIECE SET OF ARP FLEX PLATE BOLTS"  These high strength 12 point, black oxide bolts are to replace the factory weak flex plate bolts. 

    $30.00
  • ARP Head Studs

    ARP Head Studs

    This is a Set of "ARP HEAD STUDS" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6.

    $135.00
  • ARP Intake Manifold Bolt Kit ARP Intake Manifold Bolt Kit

    ARP Intake Manifold Bolt Kit

    This is a Set of "ARP INTAKE MANIFOLD BOLT KIT" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. Will work with stock or Champion Intake Manifold.

    $38.99
  • ARP Main Studs ARP Main Studs

    ARP Main Studs

    This is a Set of "ARP MAIN STUDS" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6.

    $109.00
  • Billet Aluminum 4 piece Pulley set

    Billet Aluminum 4 piece Pulley set

    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 includeds the crank pulley, water pump...

    $499.00
  • Billet Aluminum 6 piece Pulley set

    Billet Aluminum 6 piece Pulley set

    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 includeds the crank pulley, water...

    $549.00
  • Billet Aluminum 6 piece Pulley set Black Anodized Billet Aluminum 6 piece Pulley set Black Anodized

    Billet Aluminum 6 piece Pulley set Black Anodized

    This is a GN1Performance "BLACK ANODIZED 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 ANODIZED BLACK and CNC machined with a high polished finish. The kit...

    $599.00
  • Billet Aluminum 7 piece Pulley set

    Billet Aluminum 7 piece Pulley set

    This is a GN1Performance "7 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 includeds the crank pulley, water pump...

    $599.00
  • Billet Aluminum A/C Delete Pulley Billet Aluminum A/C Delete Pulley Billet Aluminum A/C Delete Pulley Billet Aluminum A/C Delete Pulley

    Billet Aluminum A/C Delete Pulley

    This is a GN1Performance "BILLET CNC ALUMINUM A/C DELETE PULLEY" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This pulley is CNC machined with a high polished finish and a brand new heavy duty...

    $69.00
  • Billet Aluminum AC Cover Billet Aluminum AC Cover Billet Aluminum AC Cover

    Billet Aluminum AC Cover

    This is a GN1Performance "BILLET CNC ALUMINUM A/C COMPRESSOR COVER" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This cover is CNC machined with a high polished finish, these covers look very nice, but...

    $85.00
  • Billet Aluminum Accessory Bracket Billet Aluminum Accessory Bracket Billet Aluminum Accessory Bracket

    Billet Aluminum Accessory Bracket

    This is a "Billet Aluminum Accessory Bracket" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. Great replacement for a broken original cast aluminum accessory bracket. Not only does this piece look amazing, it is built...

    $459.00
  • Billet Aluminum Crank Pulley With Holes Billet Aluminum Crank Pulley With Holes Billet Aluminum Crank Pulley With Holes Billet Aluminum Crank Pulley With Holes Billet Aluminum Crank Pulley With Holes

    Billet Aluminum Crank Pulley With Holes

    This is a GN1Performance "BILLET CNC ALUMINUM CRANK PULLEY WITH WHOLES" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This pulley is CNC machined with a high polished finish. Not only do these pulleys look very...

    $189.00
  • Billet Aluminum GN1 Belt Tensioner Billet Aluminum GN1 Belt Tensioner Billet Aluminum GN1 Belt Tensioner Billet Aluminum GN1 Belt Tensioner Billet Aluminum GN1 Belt Tensioner

    Billet Aluminum GN1 Belt Tensioner

    This is a "Billet Aluminum GN1 Belt Tensioner and pulley" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. Great replacement for a broken original cast aluminum Tensioner bracket. Not only does this piece look amazing,...

    $349.00