Products

GSC Power-Division Intake Valve Guide for Porsche 996/997 Turbo 911 GSC Power Division Valve Guide Porsche

• Standard sized sold as set of 12 or individually 
• Oversized sold individually as +0.001" and +0.003" 

GSC Power-Division Intake Valve Guide for Nissan RB26DETT/SR20DET, Stopper Style

• RB26DETT set of 12 
• SR20DET set of 8 
• Standard sized sold as set of 12, set of 8, or individually
• Oversized sold individually as +0.001" and +0.003" 

GSC Power-Division Intake Valve Guide for Nissan RB26DETT/SR20DET, Stopper Style

Standard sized sold as set of 12, set of 8, or individually

Oversized sold individually as +0.001" and +0.003" 

GSC Power-Division Intake Valve Guide for Nissan RB26DETT/SR20DET, Stopper Style

• RB26DETT set of 12 
• SR20DET set of 8 
• Standard sized sold as set of 12, set of 8, or individually
• Oversized sold individually as +0.001" and +0.003" 

GSC Power-Division Intake Valve Guide for Nissan RB26DETT/SR20DET, Stopper Style

Standard sized sold as set of 12, set of 8, or individually

Oversized sold individually as +0.001" and +0.003" 

GSC Power-Division Intake Valve Guide for 93-07 Dodge Viper GSC Power Division Exhaust Guide Dodge

• Sold as set of 10 or individually 
• Oversized sold individually as +.001" and +.003"
• Please verify guide bore OD before purchase

GSC Power-Division Exhaust Valve Guide for Toyota 1JZ 

• Standard sized sold as set of 12 or individually - 2 sets required for complete head 
• Oversized sold individually as +.001" and +.003" 

GSC Power-Division Valve Keeper (Lock) Set for Subaru EJ Engines. Comes as a set for 16 valves (32 pieces) Suitable for all GSC Power-Division EJ Valves and valve spring kits.

GSC Power-Division Valve Keeper (Lock) Set for Mitsubishi 4G63T. Comes as a set for 16 locks (32 pieces) Suitable for all GSC Power-Division valve spring and retainer kits, as well as the OEM as an alternative to expensive dealership parts. 

GSC Power-Division OEM Replacement Valve Spring Seat Set for 4G63T. Perfect for replacing old seats when upgrading to a high performance spring kit like the GSC Beehives. Same thickness as OEM, so no spring pressure change when using these. Sold as a set of 16.

GSC Power-Division Ovate Conical Spring kit with Ti Retainer and Spring seats for the Ford Gen 1/2 Coyote 5.0

• Installed: 90 lbs @ 1.504" 
• Open:  265 lbs @ 1.010"

  GSC5010 Ovate Conical Valve Spring Kit with Ti Retainer and seats for Gen 1/2 Coyote
  Setup	Coil Bind (in)	Install Height (in)	Seat Pressure (lbs)	Open Pressure	Maximum Valve Lift (in)
  Ovate Conical	0.950	1.540	90	265 lbs @ 1.010	0.530

  • Max boost: 30+ psi

GSC Power-Division High Pressure Ovate Conical Spring kit with Ti Retainer and Spring seats for the Ford Gen 3/4 Coyote 5.0

• Installed: 97 lbs @ 1.621" 
• Open:  295 lbs @ 1.020"
  

• Max boost: 30+ psi

GSC Power-Division Race Conical Spring kit with Ti Retainer 4G63T

1,000+ HP BUILDS ONLY

Trying to break records? Trying to win races? This is the valve spring kit for the 4G63T that will allow you to take your engine package to the next level. Not for street cars or sub 1,000 HP builds, in that case please see our GSC5040 or GSC5041 beehive spring kits. Capable of controlling the valves with 60+ psi of boost at 11,000 RPM with 12.1mm lift cams. In racing, every tenth of a gram matters, so our redesigned Ti Retainer is 10% lighter and smaller, while still adding the strength needed to keep the valvetrain in one piece at 11,000 RPM.

The GSC5078 kit also includes our GSC4041 chromoly CNC replacement valve spring seats that are 0.035" thicker than the OEM part. Able to use NEW OEM valve spring keepers or our GSC1003 keeper kit. No need for special aftermarket locks that have the potential of being the wrong angle. Sold as a set: 16 conical valve springs, 16 Lightweight Ti Retainers, 16 thick CNC chromoly spring seats.

• Max RPM: 11,000 RPM
• Max boost: 60+ psi

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 software, 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 for better sealing under extreme conditions and more consistent performance throughout the life of the valve. GSC Power Division Short Intake Valve new valves are sure to become the industry standard for sport compact performance valves.

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 micro polished to allow for less oil retention on the stem, which creates less drag on the stem to guide for a smoother motion
• 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 groove 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 upgraded keeper/lock. It is not mandatory, but it is suggested, that any valve lock not be reused on performance applications due to material grooving
• Valve tip lengths - we have taken extra time to adjust tip heights on this application 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. The GSC2056-01, GSC2056-12 valve protrusion has been shortened by .15mm to reduce the need to tip the valves on cylinder heads that are receiving a valve job. For directl factory replacement, where a valve job is not being performed, please use part number GSC2050-01 or 2050-12

GSC Power-Division Shorty Exhaust Valve Guide for Mitsubishi 4G63T, stopper style  

• Standard sized sold as set of 8 or individually
• Oversized sold individually as +0.001" and +0.003" 

GSC Power-Division Exhaust Valve Guide for Nissan VK56

• Standard sized sold as set of 16 or individually 
• Oversized sold individually as +0.001" and +0.003" 

GSC Power-Division Intake Valve Guide for Nissan VK56  GSC Power Division Valve Guide Nissan

• Standard sized sold individually 
• Oversized sold individually as +0.001" and +0.003" 

GSC Power Division Intake Valve Guide for Nissan VR38DETT, stopper style GSC Power Division spring Guide VR38DETT 

• Standard sized sold as Singles
• Oversized sold individually as +0.001" and +0.003" 

GSC Power Division spring Guide VR38DETT

GSC Power-Division Single Spring with Ti Retainer Kit for the Subaru EZ36.

• 85lbs @ 1.3" install height 
• 200lbs @ 0.900" 

• Max RPM: 8,500 RPM

GSC Power-Division Single Cylindrical Valve Spring Kit with Ti Retainer for the 2JZ & 1JZ includes 24 titanium retainers and 24 cylindrical valve springs. This is a great spring kit for the daily driver with an S1 or S2 cam profile that keeps the boost and revs below 32 psi and 8500 RPM. These round wire springs still have the same high quality attention to detail as our popular beehive kits. The GSC5744 is Nano-peened and batched according to seat pressure within our specs. The lightweight titanium retainers are CNC machined with tolerances and repeatability that are unmatched by other brands. This keeps a consistent seat pressure across the head for ultimate reliability and performance.

• Max RPM: 8,500 RPM
• Max boost: 32 psi

GSC Power-Division Single Cylindrical Valve Spring with Ti Retainer for Gen3 Toyota 3SGTE for shim under bucket includes 16 titanium retainers and 16 valve springs. This spring kit drops in with the OEM locator. These round wire springs still have the same high quality attention to detail as our popular beehive kits. The GSC5746 is Nano-peened and batched according to seat pressure within our specs. The lightweight titanium retainers are CNC machined with tolerances and repeatability that are unmatched by other brands. This keeps a consistent seat pressure across the head for ultimate reliability and performance.

• Max RPM: 8,200 RPM
• Max boost: 32 psi
• Use only Toyota OEM keeper part number: 90913-03021 for the 3SGTE. Do not swap with 2JZ keepers as height will change more than .020"/.5mm causing lower install pressure. 

GSC Power-Division Single Cylindrical Valve Spring with Ti Retainer for the DOHC Subaru Turbo EJ platforms includes 16 titanium retainers and 16 cylindrical valve springs. These round wire springs still have the same high quality attention to detail as our popular beehive kits. The GSC5743 is Nano-peened and batched according to seat pressure within our specs. The lightweight titanium retainers are CNC machined with tolerances and repeatability that are unmatched by other brands. This keeps a consistent seat pressure across the head for ultimate reliability and performance.

• Max RPM: 8,000 RPM
• Max boost: 32 psi

GSC Power-Division Single Cylindrical Valve Spring Kit with Ti Retainers for the Subaru 2015+WRX, BRZ, Scion FRS and Toyota FT86 using the new 2.0L NA boxer engine includes 16 titanium retainers, 16 cylindrical valve springs, and 16 spring seats. These round wire springs still have the same high quality attention to detail as our popular beehive kits. The GSC5756 is Nano-peened and batched according to seat pressure within our specs. The lightweight titanium retainers are CNC machined with tolerances and repeatability that are unmatched by other brands. This keeps a consistent seat pressure across the head for ultimate reliability and performance.

• Max RPM: 8,200 RPM
• Max boost: 20 psi