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GSC Power Division

Unleash the maximum performance of your import engine with GSC Power Division components, proudly offered by Straight Six Imports. GSC specializes in the design and manufacture of world-class, high-quality valvetrain components engineered for extreme horsepower and high-RPM applications.

Browse our selection of GSC Power Division products, including:

Performance Camshafts: From the street-focused S1 Cams (great for stock turbo or mild upgrades) to the full-race S2 and S3 Billet Camshafts, GSC delivers superior mid-range and top-end power without sacrificing low-end torque. We offer cams for Subaru EJ/FA series, Mitsubishi Evo 4G63/4B11T, Toyota 2JZ/3SGTE, and more!
Performance Valvetrain Kits: Control high lift and high RPM with confidence. Shop GSC Beehive and Conical Valve Springs with Titanium Retainers, designed for maximum stability and reduced mass.
Supporting Components: Find essential parts like Viton Valve Stem Seals, Manganese Bronze Valve Guides, and Zero-Tick Lifters to complete your head build.

Whether you're building a drag-strip monster or a street-driven track car, trust Straight Six Imports to supply the precision-engineered GSC parts you need for reliable, record-breaking power. Shop the best in Japanese sport compact engine internals today!

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GSC P-D Toyota 2JZ Viton 6mm Valve Stem Seal Set $29.55 CAD ~~$34.78 CAD~~

GSC P-D 4G63T .035in over OEM Chromoly CNC Spring Seat for Mitsubishi - Set of 16 $68.54 CAD ~~$80.64 CAD~~

GSC P-D Mitsubishi 4G63T Evo 1-3 / 90-99 DSM R4 Camshafts 295/310 Billet (Drag Race Engine Only) $889.28 CAD ~~$1,046.22 CAD~~

GSC P-D Nissan VQ35 Extreme Conical Valve Spring Titanium Retainer and Spring Seat Kit $1,184.05 CAD ~~$1,393.00 CAD~~

GSC P-D Mitsubishi Evo 4-8 4G63T 274/272 S2 Billet Exhaust Side Camshaft (Exhaust Cam Only) $461.43 CAD ~~$542.85 CAD~~

GSC P-D Nissan VR38DETT 6.6mm Stem Manganese Bronze Exhaust Valve Guide Stopper Style - Single $7.98 CAD ~~$9.39 CAD~~

GSC P-D Nissan VR30DDTT 28.5mm Head STD 97.5mm Long Super Alloy Exhaust Valve - Set of 12 $512.64 CAD ~~$603.11 CAD~~

GSC P-D Nissan VR30DDTT 33.3mm Head STD 101.1mm Long Intake Valve - Set of 12 $396.66 CAD ~~$466.66 CAD~~

GSC P-D Nissan VR30DDTT 28.5mm Head STD 97.5mm Long Exhaust Valve - Set of 12 $403.45 CAD ~~$474.64 CAD~~

GSC P-D Can-Am Maverick Turbo 25mm Head STD 85.2mm Long Exhaust Valve - Set of 6 $298.59 CAD ~~$351.29 CAD~~

GSC P-D Can-Am Maverick Turbo 29mm Head STD 84.3mm Long Intake Valve - Set of 6 $206.84 CAD ~~$243.33 CAD~~

GSC P-D Nissan RB26DETT 31.15mm Head +1mm OS 103.24mm Long +1.5mm Tip Exhaust Valve - Set of 12 $663.74 CAD ~~$780.86 CAD~~

GSC P-D Nissan VR38DETT 38.15mm Head +1mm OS 94.95mm Long Flat Face Intake Valve - Set of 12 $430.46 CAD ~~$506.42 CAD~~

GSC P-D Mitsubishi 4G63T Evo 4-9 R4 Camshafts 295/310 Billet (Drag Race Engine Only) $889.28 CAD ~~$1,046.22 CAD~~

GSC P-D BMW B58 Gen 1.5 S2 Camshafts 278/274 Billet w/Intake Trigger (Use w/Upgraded Turbo) $1,666.00 CAD ~~$1,960.00 CAD~~

GSC P-D Ford F-150 Coyote Gen 3 (w/OEM Unported Head) 292/316 S2 Billet Cams (Req Spring Upgrade) $2,486.40 CAD ~~$2,925.17 CAD~~

GSC P-D Ford F-150 Coyote Gen 3 (w/OEM Unported Head) 290/300 S1 Billet Camshafts $2,486.40 CAD ~~$2,925.17 CAD~~

GSC P-D Ford F-150 Coyote Gen 3 (w/Ported Head) 300/316 Billet R3 Camshafts (Req Spring Upgrade) $2,486.40 CAD ~~$2,925.17 CAD~~

GSC P-D Ford F-150 Coyote Gen 3 (w/Ported Head) 292/304 R2 Billet Camshaft (Req Spring Upgrade) $2,486.40 CAD ~~$2,925.17 CAD~~

GSC P-D 18-23 Ford Mustang Coyote Gen 3 (w/OE Head) 292/316 Billet S2 Camshafts (Req Spring Upgrade) $2,486.40 CAD ~~$2,925.17 CAD~~

GSC P-D 18-23 Ford Mustang Coyote Gen 3 (w/OEM Unported Head) 290/300 Billet S1 Camshafts $2,486.40 CAD ~~$2,925.17 CAD~~

GSC P-D 18-23 Ford Mustang Coyote Gen 3 (w/Ported Head) 300/316 R3 Billet Cams (Req Spring Upgrade) $2,486.40 CAD ~~$2,925.17 CAD~~

GSC P-D 18-23 Ford Mustang Coyote Gen 3 (w/Ported Head) 292/304 R2 Billet Cams (Req Spring Upgrade) $2,486.40 CAD ~~$2,925.17 CAD~~

GSC P-D Nissan VR38DETT S6 Camshafts 294/302 Billet (For Top End/Drag Race Methanol Fuel Only) $1,874.25 CAD ~~$2,205.00 CAD~~

GSC P-D Mitsubishi Evolution 9 4G63T 260/268 Billet R1R Rally Camshafts $914.52 CAD ~~$1,075.90 CAD~~

GSC P-D Mitsubishi EVO 8 4G63 L3 Billet Camshaft Set $889.29 CAD ~~$1,046.22 CAD~~

GSC P-D Ford Raptor/Platinum/Limited Ecoboost 3.5L H.O. Conical Valve Spring and Ti Retainer Kit $868.70 CAD ~~$1,022.00 CAD~~

GSC P-D Can-Am Maverick Turbo Conical Valve Spring and Ti Retainer Kit $510.51 CAD ~~$600.60 CAD~~

GSC P-D Nissan VQ35 High Pressure Conical Valve Spring Titanium Retainer and Spring Seat Kit $1,090.04 CAD ~~$1,282.40 CAD~~

GSC P-D Nissan VQ35 Conical Valve Spring and Titanium Retainer Kit $1,090.04 CAD ~~$1,282.40 CAD~~

GSC P-D Ford 5.2L Voodoo/Predator Conical Spring & Ti Retainer Kit $1,094.80 CAD ~~$1,288.00 CAD~~

GSC P-D Toyota G16E +.003in Oversize OD Manganese Bronze Exhaust Valve Guide Stopper Style- Single $7.98 CAD ~~$9.39 CAD~~

GSC P-D Toyota G16E +.001in Oversize OD Manganese Bronze Exhaust Valve Guide Stopper Style - Single $7.98 CAD ~~$9.39 CAD~~

GSC P-D Toyota G16E +.003in Oversize OD Manganese Bronze Intake Valve Guide Stopper Style - Single $7.98 CAD ~~$9.39 CAD~~

GSC P-D Toyota G16E +.001in Oversize OD Manganese Bronze Intake Valve Guide Stopper Style - Single $7.98 CAD ~~$9.39 CAD~~

GSC P-D Toyota G16E Manganese Bronze Intake Valve Guide Stopper Style - Single $7.98 CAD ~~$9.39 CAD~~

GSC P-D Toyota 2JZ +.003in Oversize OD Manganese Bronze Exhaust Valve Guide Stopper Style - Single $7.98 CAD ~~$9.39 CAD~~

GSC P-D Toyota 2JZ +.001in Oversize OD Manganese Bronze Exhaust Valve Guide Stopper Style - Single $7.98 CAD ~~$9.39 CAD~~

GSC P-D Toyota 2JZ STD Manganese Bronze Exhaust Valve Guide Stopper Style - Single $7.98 CAD ~~$9.39 CAD~~

GSC P-D Nissan VR38DETT 6.6mm Stem Manganese Bronze Exhaust Valve Guide Stopper Style - Set of 12 $92.26 CAD ~~$108.54 CAD~~

GSC P-D Toyota 2JZ +.003in OD Oversized Intake Valve Guide Stopper Style - Single $7.98 CAD ~~$9.39 CAD~~

GSC P-D Toyota 2JZ +.001in OD Oversized Intake Valve Guide Stopper Style - Single $7.98 CAD ~~$9.39 CAD~~

GSC P-D Toyota 2JZ Manganese Bronze Intake Valve Guide Stopper Style - Single $7.98 CAD ~~$9.39 CAD~~

GSC P-D Nissan VR30DDTT Manganese Bronze Stopper Style Intake Valve Guide +.003in OD - Single $7.98 CAD ~~$9.39 CAD~~

GSC P-D Nissan VR30DDTT Manganese Bronze Stopper Style Intake Valve Guide +.001in OD - Single $7.98 CAD ~~$9.39 CAD~~

GSC P-D Nissan VR30DDTT Manganese Bronze Stopper Style Intake Valve Guide - Set of 12 $92.26 CAD ~~$108.54 CAD~~

GSC P-D Nissan VR30DDTT Manganese Bronze Stopper Style Intake Valve Guide - Single $7.98 CAD ~~$9.39 CAD~~

GSC P-D Nissan VR30DDTT Manganese Bronze Stopper Exhaust Valve Guide +.003in Oversize OD - Single $7.98 CAD ~~$9.39 CAD~~

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