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120lb Injectors set
Product ID: 120lbInjectorSet

Details 

This is a set of "120lb Fuel Injectors " for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This kit comes with everything you see in the pictures. This kit does not include a chip and is ideal for those who are running a F.A.S.T
Price: $429.00

3" DownPipe with Internal Wastegate
Product ID: 3.0DPW/InternalWastegate

Details 

This is a GN1Performance "3 INCH INTERNAL WASTEGATE DOWN PIPE " for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This 3" Inch Internal Wastegate Downpipe is designed to work with your factory turbo and factory wastegate actuator! This Product is constructed out of 304 stainless steel and is all tig welded, built to clear most headers (Our SE Headers).

Installation is simple, remove your original 2.5" Downpipe and remove the cast iron elbow on the exhaust side of the turbo. Leave the actuator on the turbo and bolt the new pipe on!

A new test pipe or cutout will be necessary to adapt the new Downpipe to your exhaust.

 Made in the USA! 

Would you like to add a Cutout or Test Pipe? Yes a 3" Test Pipe (+$79.00)
Yes a 3" Cutout (+$89.00)
No, not at this time
Price: $489.00

3.5" Down Pipe with a V-Band 46mm External Wastegate
Product ID: 3.5DPW/VBANDEXTGATE

Details 

This is a GN1Performance "3.5 INCH EXTERNAL WASTEGATE DOWN PIPE WITH A V-Band 46mm WASTEGATE" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6.This is our all new 3.5" Inch External wastegate Downpipe constructed out of 304 stainless steel. It comes complete with a brand new V-Band 46mm wastegate, bolts, and gaskets. All tig welds and is built to clear headers. Please keep in mind that when ordering any external wastegate down pipe a boost controller is need to allow it to function properly and avoid any damage.

  • Note- This pipe REQUIRES an aftermarket Boost Controller 
  • This item will not work on a lowered vehicle due to contact with the upper control arm.
Would You Like to Add a Boost Controller? Yes (+$99.00)
No
Price: $585.00

4340 Steel 3.625 Stroker Crankshaft
Product ID: 4340Crank3.625

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.

Crank weight is 43lbs!  

KEEP IN MIND THIS IS A 4340 CRANK SHAFT, NOT 4140. THIS 4340 MATERIAL WILL SUPPORT 1000-1200 HP EASILY.  

This is a 2017 version, no knurl where the rear main seal sits!

 

 This item is discounted for Black Friday! The free Flexplate will be shipped along with the crankshaft automatically.  

Price: $595.00

Billet 46mm VBand Wastegate
Product ID: 46mmWastegate

Details 

This is a custom "BILLET 46mm WASTEGATE " for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This comes with all of the hardware shown in the pictures. Include a stainless steel flange to work on any application.
Price: $169.00

4" Inch Single Shot Catback Exhaust System
Product ID: 4InchSingleShotExhaust

Details 

This is our ALL NEW GN1Performance "4" Inch Single Shot Cat Back Exhaust System" for a 1986 or 1987 Buick Grand National, T Type, or Turbo T 3.8 liter turbo V6. This 4 inch exhaust kit comes complete with a custom muffler, clamps, and hangers which is everything you need to bolt this kit on your car today! This kit is a direct "bolt in" no welding or cutting is needed! The system is constructed out of 304 stainless steel and features a high polish finish. The exhaust system is polished stainless and looks beautiful under the car.
Price: $549.00

A Comp Turbo CT43 6265-Triple Ball Bearing Billet Turbo
Product ID: ACompTurboCT43Series62653BB

Details 

This is a Comp Turbo "CT43 6265 TRIPLE BALL BEARING Series Billet Turbo" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. The CT-43 Turbo with CT 62 Billet compressor wheel and  a BULLET to distribute the air properly, full billet CNC center section and HE65 light weight 10 blade Turbine wheel. It has a 4" intake and a 3" outlet. This turbo is good for anywhere from 500-950HP. This turbo has a TRIPLE ball bearing configuration (the only Turbo on the market with this technology) and is also equipped with a .85 exhaust housing and a anti-surge compressor housing. 

 

Price: $1,695.00

A Comp Turbo CT43 6265-J Shaft Turbo
Product ID: ACompTurboCT43Series6265JShaft

Details 

This is a Comp Turbo "CT43 6265 Journal Shaft Series Billet Turbo" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. The CT-43 Turbo with CT 62 Billet compressor wheel and a BULLET to distribute the air properly, full billet HE65 light weight 10 blade Turbine wheel. It has a 4" intake and a 3" outlet. This turbo is good for anywhere from 500-950HP. Also equipped with a .85 exhaust housing and a anti-surge compressor housing. 

 

Price: $1,495.00

A Comp Turbo CT43 6765-Triple Ball Bearing Billet Turbo
Product ID: ACompTurboCT43Series67653BB

Details 

This is a Comp Turbo "CT-43 6765 TRIPLE BALL BEARING Series Billet Turbo" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. The CT-43 Turbo with CT 67 Billet compressor wheel and  a BULLET to distribute the air properly, full billet CNC center section and HE65 light weight 10 blade Turbine wheel. It has a 4" intake and a 3" outlet. This turbo is good for anywhere from 500-950HP. This turbo has a TRIPLE ball bearing configuration (the only Turbo on the market with this technology) and is also equipped with a .82 exhaust housing and a anti-surge compressor housing. 

 

Price: $1,695.00

A Comp Turbo CT43 6765-Triple Ball Bearing Billet Turbo T4 Flange
Product ID: ACompTurboCT43Series67653BBT4

Details 

This is a Comp Turbo "CT-43 6765 TRIPLE BALL BEARING Series Billet Turbo with a T4 4 bolt flange" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. The CT-43 Turbo with CT 67 Billet compressor wheel and  a BULLET to distribute the air properly, full billet CNC center section and HE65 light weight 10 blade Turbine wheel. It has a 4" intake and a 3" outlet. This turbo is good for anywhere from 500-950HP. This turbo has a TRIPLE ball bearing configuration (the only Turbo on the market with this technology) and is also equipped with a .82 exhaust housing and a anti-surge compressor housing. 

 

Price: $1,695.00

A Comp Turbo CT3 5356-360 Billet Turbo
Product ID: ACompTurboCTSeries5356

Details 

 IF YOU'RE CONSIDERING A TA 49, TAKE A LOOK AT OUR NEW COMP CT53!!! 

This is a Comp Turbo "CT-3 5356-360 Series Billet Turbo" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. The CT-3 Turbo with CT 53mm Billet compressor wheel with a BULLET to distribute the air properly and a 56mm light weight 10 blade Turbine wheel. It has a 3" intake and a 2" outlet.   This turbo is good for anywhere from 450-550HP. This turbo has a standard 360 Journal bearing configuration and is also equipped with a .63 exhaust housing and a anti-surge compressor housing.  

 THESE TURBOS ARE SOLD ON AN EXCHANGE BASIS ONLY. WHEN PURCHASING THIS TURBO YOU WILL HAVE TO SHIP US YOUR ORIGINAL TURBO IN ORDER FOR US TO COMPLETE THE PURCHASE AND SHIP OUT YOUR NEW TURBO.

*This item is also available in .82 exhaust housing, please specify when ordering.

Price: $1,099.00

Aeromotive Stealth 340 Fuel Pump
Product ID: AeromotiveStealthFuelPump

Details 

This is a "Aeromotive Stealth 340 Fuel Pump" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This pump is a direct replacement for the stock intank pump. This is a must for higher horsepower applications.The Aeromotive 340 Stealth Fuel Pump is a high-output, in-tank, electric fuel pump that fits most popular EFI applications. The Aeromotive 340 is a compact, lightweight pump that bolts into many existing hanger assemblies. 
Price: $189.00

Fuel Injectors and Chip Combo
Product ID: AFuelInjectorsandchip

Details 

This is a "60lb Fuel Injectors and Chip Kit " for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This kit comes with everything you see in the pictures. Th injectors are high impedance and work for many different applications.

Are you running ALKY? No
Yes
Price: $489.00

4 Inch Cold Air Intake System Without MAF
Product ID: Air4InchColdAirIntakeNoMaf

Details 

This is a GN1Performance "HUGE 4" COLD AIR INTAKE SYSTEM" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. The kit includes a custom fabricated huge 4 inch aluminum pipe, 4" K&N air filter, and the hose and clamps. This is item is for buick owners who are running a stand alone fuel management system (fast, BIG stuff, etc)
Price: $225.00

4 Inch Cold Air Intake System with 4 Inch MAF pipe
Product ID: Air4InchColdAirIntakewithMAFPIPE

Details 

This is a GN1Performance "4" COLD AIR INTAKE SYSTEM DESIGNED TO ACCEPT A 3.5 MAF SENSOR" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. The kit includes a custom fabricated huge 4 inch aluminum pipe, 4" K&N air filter, and the ALL the hoses and clamps to work with your 3.5" LS1 MAF sensor. The kit includes a 4" MAF pipe, a 4" straight hose, (2) 4"-3.5" reducer hoses to adapt your LS1 sensor, a 4" connector pipe, all the stainless heavy duty t-clamps necessary, and a 4" K&N Air Filter. 
Price: $299.00

Long Rod Stroker Kit
Product ID: ALongRodStrokerKit

Details 

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 3.625 stroker crank, 6.350 h beam rods and JE Custom pistons.

KEEP IN MIND THIS IS A 4340 CRANK SHAFT, NOT 4140. THIS 4340 MATERIAL WILL SUPPORT 1000-1200 HP EASILY.   

*In some cases, minor machine work may be required depending on your application, by this we mean checking the journal tolerances and rod clearances.

*When building an engine of this nature we HIGHLY recommend you install the 2 Billet Center Main Caps, ARP Main Studs, ARP Head Studs, and a set of Cometic Head Gaskets.  These items will ensure you are assembling a bulletproof bottom end. 

List Price: $1,895.00
Price: $1,743.40

Aluminum Battery Cover Engraved Power 6 Logo
Product ID: AluminumBatteryCoverEngraved

Details 

This is a GN1Performance "Polished Aluminum Battery Cover with engraved power 6 logo" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This cover features a brilliant high polished finish with a power 6 logo engrave on the top. It bolts straight to the core support and makes the engine bay look amazing.

 

***This cover should NOT be used on a top post battery  

List Price: $169.00
Price: $155.48

Billet Aluminum 4 piece Pulley set
Product ID: AluminumPulleySet4

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 includeds 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!

MADE IN U.S.A!

List Price: $305.00
Price: $280.60

Billet Aluminum 6 piece Pulley set
Product ID: AluminumPulleySet6

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 includeds 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!

MADE IN U.S.A!

List Price: $399.00
Price: $367.08

A Aluminum Radiator and Dual Ho Spal Fans Combo
Product ID: AluminumRadandHoFansCombo

Details 

This is a GN1Performance "EXTREME ALUMINIM HIGH FLOW 2.5 INCH 3 ROW RADIATOR AND DUAL SPAL FANS COMBO KIT" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. THIS IS A DIRECT DROP IN PLUG AND PLAY! This product not only looks great in the car, but also most importantly keeps your car running cool especially for those of you running front mount intercoolers. Not to mention this item will lighten up the front of your car. The radiator has transmission and motor oil hook ups. The dimensions of this radiator are 31x18x2.5 and only weighs 12lbs!  The fans have the correct plugs to plug right into your factory harness. Comes with 2 HIGH FLOWING HIGH OUTPUT 12" inch SPAL fans (1390 cfm EACH), and draw 13.5 amps. Also includes a relay kit to allow full  power and advantage of these fans with a delay for the second fan so the kit doesnt draw too many amps at once avoiding blown fuses. The shroud is hand built out of aluminum with tabs, and mounting hardware. The shroud dimensions are 25x14x1.
List Price: $779.00
Price: $716.68

A Super Extreme Rad and Dual Ho Spal Fans Combo
Product ID: AluminumRadandHoFansComboSuperExtreme

Details 

This is a GN1Performance "SUPER EXTREME ALUMINIM HIGH FLOW 3 INCH 3 ROW RADIATOR AND DUAL SPAL FANS COMBO KIT" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. THIS IS A DIRECT DROP IN PLUG AND PLAY! This product not only looks great in the car, but also most importantly keeps your car running cool especially for those of you running front mount intercoolers. Not to mention this item will lighten up the front of your car. The radiator has transmission and motor oil hook ups. The dimensions of this radiator are 31x18x3 and only weighs 13lbs!  The fans have the correct plugs to plug right into your factory harness. Comes with 2 HIGH FLOWING HIGH OUTPUT 12" inch SPAL fans (1390 cfm EACH), and draw 13.5 amps. Also includes a relay kit to allow full  power and advantage of these fans with a delay for the second fan so the kit doesnt draw too many amps at once avoiding blown fuses. The shroud is hand built out of aluminum with tabs, and mounting hardware. The shroud dimensions are 25x14x1.

 

* Please be aware that this radiator core is approximately 1/2"  thicker than a factory radiator. When installed, it will protrude past the factory hold down cover. This is normal. 

List Price: $799.00
Price: $735.08

Aluminum 3 Row Radiator
Product ID: AluminumRadiator

Details 

This is a GN1Performance "ALUMINIM HIGH FLOW 3 ROW RADIATOR" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This product not only looks great in the car, but also most importantly keeps your car running cool especially for those of you running front mount intercoolers. Not to mention this item will lighten up the front of your car. The radiator also has transmission and motor oil hook ups. The dimensions of this radiator are 31x18x2.5 and only weighs 13lbs!

List Price: $375.00
Price: $345.00

Stroker Kit
Product ID: AStrokerkit

Details 

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 pistons. This kit has the extra edge for mid range and top end due to the advange of our 5.970 rods verses the standard 5.960 rods most other kits use. 

KEEP IN MIND THIS IS A 4340 CRANK SHAFT, NOT 4140. THIS 4340 MATERIAL WILL SUPPORT 1000-1200 HP EASILY.   

*In some cases, minor machine work may be required depending on your application, by this we mean checking the journal tolerances and rod clearances.

*When building an engine of this nature we HIGHLY recommend you install the 2 Billet Center Main Caps, ARP Main Studs, ARP Head Studs, and a set of Cometic Head Gaskets.  These items will ensure you are assembling a bulletproof bottom end.

List Price: $1,795.00
Price: $1,651.40

A Transmission Mount
Product ID: ATransmissionMount

Details 

 This is a HRparts "Transmission Mount" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6 running a 200r4 Transmission. These new mounts have proven to be indestructible on engines making 1400+ HP, and are stronger than even the solid type mounts.  The Poly mounts are designed to benefit the every-day driver as well as the full time racer, at any performance level. 

Price: $90.00

A Turbo Oil Feed and Return Kit
Product ID: ATurboOilFeedandReturnKit

Details 

This is a GN1Performance "Turbo Oil Feed & Return kit" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. All made for GN1 exclusively by XRP! The kit includes everything you see in the pictures. One custom Stainless Steel braided oil feed line with a 60 micron filter to save debris from traveling through your turbo. Fitted with Stainless Steel 90 degree fittings, we even supply you with the correct XRP fitting to adapt the feed line to your OEM brass block. Also in this kit is a custom fabricated Turbo Oil Return line with XRP pressed on -10 fittings (one end swivels). To adapt this lower return line to the turbo we supply you with a -10 male end fitting to bolt to your turbo and a gasket as well, you also get a male end XRP fitting to put on the engine block to complete the install.

All made in U.S.A

We recommend you clean the inline filter every time you change your vehicles oil. 

Price: $289.00

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