GSC Power Division

Products

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GSC Power-Division Exhaust Valve 30.5mm (STD) Mitsubishi 4G63T -Mitsubishi Lancer Evolution 1-3/ DSM (4G63)
Part #: 2001-8
When creating our new valve line we set out to create the best performance longest lasting valves available to the aftermarket. Using advanced 3D design and simulation programs we have created a stronger and higher flowing valve head design. We flow test prototype valve heads in the specific applications to make sure we have the highest flowing valve head available on the market today. With the materials used we have less valve distortion at the face than any of the tested designs. Less distortion allows or better sealing under extreme conditions and more consistent performance threw the life of the valve.
Valve Features
Swirl polished heads for smoother air flow over the valve
Back cut to reduce valve weight for higher rpm, higher boost pressure and allow for more aggressive cam profiles without increasing valve spring seat pressures.
Valve stems are micropolished to allow for less oil retention on the stem which creates less drag on the stem to guide for a smoother motion.
Fully nitrated ( this includes the 45 which increases valve life and makes a better seal at the valve seat for improved cylinder pressure) also reduces carbon buildup on the backside of the valve.
Intake valves are a modified 21-4n stainless and Exhausts are a modified 23-8n stainless material for high heat capacity while maintaining longevity.
Valve tips are either hardened or have a stelite wafer tip fused so that the tip is within 5 Rockwell C of the rocker or valve tappet for extended life and less wear
Valve tip lengths. We have taken extra time to adjust tip heights on the applications to require less tipping of the valve to maintain proper tip height for proper valve train geometry, and to cut down on install times when setting valve lash.
We have also adjusted the Keeper grove to properly balance intake and exhaust spring pressures to reduce the use of valve spring shims and maximize performance from our spring and retainer kits.
Valves will work with an oem keeper/lock or when available our upgrade keeper/lock. It's not mandatory but it is suggested that any valve lock not be reused on performance applications do to material grooving.

Our price: $114.58
Quantity
GSC Power-Division Intake Valve 34mm (STD) Mitsubishi 4G63T - Mitsubishi Lancer Evolution 1-3/ DSM (4G63)
Part #: 2002-8
When creating our new valve line we set out to create the best performance longest lasting valves available to the aftermarket. Using advanced 3D design and simulation programs we have created a stronger and higher flowing valve head design. We flow test prototype valve heads in the specific applications to make sure we have the highest flowing valve head available on the market today. With the materials used we have less valve distortion at the face than any of the tested designs. Less distortion allows or better sealing under extreme conditions and more consistent performance threw the life of the valve.

Valve Features
Swirl polished heads for smoother air flow over the valve
Back cut to reduce valve weight for higher rpm, higher boost pressure and allow for more aggressive cam profiles without increasing valve spring seat pressures.
Valve stems are micropolished to allow for less oil retention on the stem which creates less drag on the stem to guide for a smoother motion.
Fully nitrated ( this includes the 45 which increases valve life and makes a better seal at the valve seat for improved cylinder pressure) also reduces carbon buildup on the backside of the valve.
Intake valves are a modified 21-4n stainless and Exhausts are a modified 23-8n stainless material for high heat capacity while maintaining longevity.
Valve tips are either hardened or have a stelite wafer tip fused so that the tip is within 5 Rockwell C of the rocker or valve tappet for extended life and less wear
Valve tip lengths. We have taken extra time to adjust tip heights on the applications to require less tipping of the valve to maintain proper tip height for proper valve train geometry, and to cut down on install times when setting valve lash.
We have also adjusted the Keeper grove to properly balance intake and exhaust spring pressures to reduce the use of valve spring shims and maximize performance from our spring and retainer kits.
Valves will work with an oem keeper/lock or when available our upgrade keeper/lock. It's not mandatory but it is suggested that any valve lock not be reused on performance applications do to material grooving.

Our price: $115.60
Quantity
GSC Power-Division Exhaust Valve 31.5mm (+1mm )Mitsubishi 4G63T-Mitsubishi Lancer Evolution 9 (4G63T-Mivec)
Part #: 2003-8
When creating our new valve line we set out to create the best performance longest lasting valves available to the aftermarket. Using advanced 3D design and simulation programs we have created a stronger and higher flowing valve head design. We flow test prototype valve heads in the specific applications to make sure we have the highest flowing valve head available on the market today. With the materials used we have less valve distortion at the face than any of the tested designs. Less distortion allows or better sealing under extreme conditions and more consistent performance threw the life of the valve.
Valve Features
Swirl polished heads for smoother air flow over the valve
Back cut to reduce valve weight for higher rpm, higher boost pressure and allow for more aggressive cam profiles without increasing valve spring seat pressures.
Valve stems are micropolished to allow for less oil retention on the stem which creates less drag on the stem to guide for a smoother motion.
Fully nitrated ( this includes the 45 which increases valve life and makes a better seal at the valve seat for improved cylinder pressure) also reduces carbon buildup on the backside of the valve.
Intake valves are a modified 21-4n stainless and Exhausts are a modified 23-8n stainless material for high heat capacity while maintaining longevity.
Valve tips are either hardened or have a stelite wafer tip fused so that the tip is within 5 Rockwell C of the rocker or valve tappet for extended life and less wear
Valve tip lengths. We have taken extra time to adjust tip heights on the applications to require less tipping of the valve to maintain proper tip height for proper valve train geometry, and to cut down on install times when setting valve lash.
We have also adjusted the Keeper grove to properly balance intake and exhaust spring pressures to reduce the use of valve spring shims and maximize performance from our spring and retainer kits.
Valves will work with an oem keeper/lock or when available our upgrade keeper/lock. It's not mandatory but it is suggested that any valve lock not be reused on performance applications do to material grooving.

Our price: $114.58
Quantity
GSC Power-Division Intake Valve 35mm (+1mm) Mitsubishi 4G63T-Mitsubishi Lancer Evolution 9 (4G63T-Mivec)
Part #: 2004-8
When creating our new valve line we set out to create the best performance longest lasting valves available to the aftermarket. Using advanced 3D design and simulation programs we have created a stronger and higher flowing valve head design. We flow test prototype valve heads in the specific applications to make sure we have the highest flowing valve head available on the market today. With the materials used we have less valve distortion at the face than any of the tested designs. Less distortion allows or better sealing under extreme conditions and more consistent performance threw the life of the valve.

Valve Features
Swirl polished heads for smoother air flow over the valve
Back cut to reduce valve weight for higher rpm, higher boost pressure and allow for more aggressive cam profiles without increasing valve spring seat pressures.
Valve stems are micropolished to allow for less oil retention on the stem which creates less drag on the stem to guide for a smoother motion.
Fully nitrated ( this includes the 45 which increases valve life and makes a better seal at the valve seat for improved cylinder pressure) also reduces carbon buildup on the backside of the valve.
Intake valves are a modified 21-4n stainless and Exhausts are a modified 23-8n stainless material for high heat capacity while maintaining longevity.
Valve tips are either hardened or have a stelite wafer tip fused so that the tip is within 5 Rockwell C of the rocker or valve tappet for extended life and less wear
Valve tip lengths. We have taken extra time to adjust tip heights on the applications to require less tipping of the valve to maintain proper tip height for proper valve train geometry, and to cut down on install times when setting valve lash.
We have also adjusted the Keeper grove to properly balance intake and exhaust spring pressures to reduce the use of valve spring shims and maximize performance from our spring and retainer kits.
Valves will work with an oem keeper/lock or when available our upgrade keeper/lock. It's not mandatory but it is suggested that any valve lock not be reused on performance applications do to material grooving.

Our price: $115.60
Quantity
GSC Power-Division Intake Valve 37mm (+1mm) Subaru EJ20/EJ257 Turbo Engine-Subaru EJ20 WRX NON AVCS
Part #: 2014-8
When creating our new valve line we set out to create the best performance longest lasting valves available to the aftermarket. Using advanced 3D design and simulation programs we have created a stronger and higher flowing valve head design. We flow test prototype valve heads in the specific applications to make sure we have the highest flowing valve head available on the market today. With the materials used we have less valve distortion at the face than any of the tested designs. Less distortion allows or better sealing under extreme conditions and more consistent performance threw the life of the valve.

Valve Features
Swirl polished heads for smoother air flow over the valve
Back cut to reduce valve weight for higher rpm, higher boost pressure and allow for more aggressive cam profiles without increasing valve spring seat pressures.
Valve stems are micropolished to allow for less oil retention on the stem which creates less drag on the stem to guide for a smoother motion.
Fully nitrated ( this includes the 45 which increases valve life and makes a better seal at the valve seat for improved cylinder pressure) also reduces carbon buildup on the backside of the valve.
Intake valves are a modified 21-4n stainless and Exhausts are a modified 23-8n stainless material for high heat capacity while maintaining longevity.
Valve tips are either hardened or have a stelite wafer tip fused so that the tip is within 5 Rockwell C of the rocker or valve tappet for extended life and less wear
Valve tip lengths. We have taken extra time to adjust tip heights on the applications to require less tipping of the valve to maintain proper tip height for proper valve train geometry, and to cut down on install times when setting valve lash.
We have also adjusted the Keeper grove to properly balance intake and exhaust spring pressures to reduce the use of valve spring shims and maximize performance from our spring and retainer kits.
Valves will work with an oem keeper/lock or when available our upgrade keeper/lock. It's not mandatory but it is suggested that any valve lock not be reused on performance applications do to material grooving.

Our price: $115.60
Quantity
GSC Power-Division N1 Camshafts - Honda B-series Vtec
Part #: 6015N1
GSC Power-Division Honda B-series Vtec N1 Camshafts are great upgrades for the NA Street Car looking for improvements in power for the mid-range to top-end over even the ITR profiles. We suggest that customers add these cams after doing many of the standard bolt ons (CAI, Exhaust/Header Upgrade, Vtec and Fuel controller, and fuel system upgrades)

High lobe (IN/EX)
280/276 Duration
246/[email protected] Duration
11.6mm/11.0mm Peak valve lift
104/106 Center line

Adding a valve spring upgrade and even our Ti retainer option are a great accompanying mod with a N1 camshaft set install.

Our price: $537.95
Quantity
GSC Power-Division Evolution 4-8 S3 Camshafts -Mitsubishi Lancer Evolution 4-8 (4G63)
Part #: GSC-6008S3
The S3 Cams are available in a Solid Lifter cam and a Hydraulic Lifter Cam for the Evo 4-8 4G63. These cams are intended for the 800whp+ to take advantage of a very large turbo. these are NOT suggested for anyone running smaller than the 67mm to GT42R turbo.

6008S3 ADV Duration Duration @ 1mm Peak Lift CenterLine
Intake 280 238 11.70mm 109
Exhaust 280 238 11.70mm 115

Our price: $522.75
Quantity Out of stock
GSC Power-Division Standard Intake Guide with Depth Stopper -Mitsubishi Lancer Evolution 9 (4G63T-Mivec)
Part #: GSC3004-8
What we have done is actually quite simple, we made valve guides that fit properly, are easier to install, and shaped to help air flow instead of just copying the OEM designWhat this means for you and your installer is less time fitting guides to the head due to holding the tightest tolerances in the industry with the best quality control possible.

Mitsubishi 4G63T
Standard Intake, stopper style
SOLD AS A SET OF 8

Our price: $48.95
Quantity
GSC Power-Division Viton Valve Stem Seals Subaru EJ Engine-Subaru EJ20 WRX NON AVCS
Part #: 1022
Viton Valve Stem Seals for the Subaru EJ257, EJ207, and EJ205 6mm seal set. These are an upgrade from the standard OEM material to help cope with the higher heat caused increasing the performance of your engine.
Sold as a set of 16

Our price: $15.95
Quantity
GSC Power-Division Viton Valve Stem Seals - TOYOTA MR-2 GEN 2 (89-99) 3SGTE
Part #: 1031
GSC Power-Division Viton Valve Stem Seals for the Toyota 3S-GTE 6mm valve size seal set. These are an upgrade from the standard OEM material to help cope with the higher heat caused by high performance engines.
Sold as a set of 16

Our price: $15.95
Quantity
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