Custom ARP 1-2" Head Stud kit, fits all EJ and FA engines Camshafts This proprietary tempering process significantly

This proprietary tempering process significantly reduces forming induced stress

Many new features are responsible for these positive attributes

our own spin on improvements

Weight 48 pounds

Torque Capacity Measured at the wheels: 316 Ft/Lbs

Custom ARP 1-2" Head Stud kit, fits all EJ and FA engines Camshafts This proprietary tempering process significantlyBenefits: 25% stronger than 625+ studs and 40% stronger than 11mm ARP 2000's reduced shank diameter (allows for no head gasket modifying) more thread engagement in block over 11mm studs uses stock alignment pins without modifying case or heads over 200ft lbs tested for stud "pull out" in block same kit price compared to 625+ kits (requires additional block and head machining to use) custom large diameter hardened washers to prevent embedding into head