Built for ported heads and real track work, the GSC R3 profile drives the Coyote hard to 9,1k-9,6k rpm with a usable band from 7,000–10,00 rpm. Events are modeled for Voodoo heads flow behavior and correct rocker geometry for high-flow combinations, then cut from our U.S.-made forged billet blanks and finished with BLACK ISE for reduced friction and long life. Runs best on Methanol Fuel.

Highlights

• Profile intent: Ported head race profile; optimized for higher-flow combos and serious track use
• Fuel: Methanol
• Peak power: 9,100~9,600 rpm · Powerband: 7,000–10,00 rpm
• Valve springs: Upgrade required (use GSC-matched springs; Ti retainers recommended)
• NA Setup: For best performance use with an aftermarket intake manifold 
• VCT: Tuner-managed phasing window recommended for best area under the curve
• Manufacturing: MADE IN THE USA; forged from proprietary U.S.-sourced bearing-grade steel, BLACK ISE surface treatment, CNC to tighter-than-OEM tolerances
• Fitment: Voodoo heads with Gen 2 timing and Mustang cross-plane firing order

Tuning & Install Notes

• Clearance: Always verify piston-to-valve clearance with your exact heads, pistons, and gasket stack. With OEM pistons and deck heights, the full phaser range is typically usable without clearance issues.
• Use upgraded valve springs (and Ti retainers) set to the tuner’s rev limit; check installed height and coil bind.