Benefits:

• Wider lobe separation and added exhaust duration from base XE series help shift the power to higher rpm where it can be used in nitrous applications
• Early exhaust opening helps scavenge the extra spent gasses out from nitrous or forced induction
• Better time slips for nitrous passes at the strip

Important Considerations:

• Slight sacrifice of some torque and responsiveness to the base XE family for improved performance with nitrous oxide
• Works best with COMP Cams® roller rockers and matched valve springs
• The big question is which time slip matters more to you (normally aspirated or N2O-assisted)?

*(Depending on duration)

BIG BLOCK CHEVY 396-454, Hydraulic, High performance street, use with 100-150 HP kit, or small blower, w/2000 rpm stall, good idle, 1600-5900 RPM range, 0.505/0.520 Lift (IN/EX) 262/280 Dur. Adv. (IN/EX) 218/230 Dur. @ 0.050" (IN/EX)

BIG BLOCK CHEVY 396-454, Hydraulic, High performance street, w/125 + HP kit, needs 2500 rpm stall, 3.73 rear gear, choppy idle, 2000-6200 RPM range, 0.551/0.568 Lift (IN/EX) 274/292 Dur. Adv. (IN/EX) 230/244 Dur. @ 0.050" (IN/EX)

BIG BLOCK CHEVY 396-454, Hydraulic, Pro-Street applications, multi-stage nitrous, or large blower, with 3500 rpm stall, rear gear, rough idle, 2800-6800 RPM range, 0.575/0.595 Lift (IN/EX) 284/305 Dur. Adv. (IN/EX) 240/253 Dur. @ 0.050" (IN/EX)

SB CHEVY 265-400, Hydraulic, High performance street, use with 100-150 HP kit, or small blower, w/2000 rpm stall, lopey idle, 1600-5900 RPM range, 0.462/0.480 Lift (IN/EX) 262/280 Dur. Adv. (IN/EX) 218/230 Dur. @ 0.050" (IN/EX)

SB CHEVY 265-400, Hydraulic, High performance street, w/125 + HP kit, needs 2500 rpm stall, 3.73 rear gear, choppy idle, 2000-6200 RPM range, 0.477/0.490 Lift (IN/EX) 262/280 Dur. Adv. (IN/EX) 218/230 Dur. @ 0.050" (IN/EX)

SB CHEVY 265-400, Hydraulic, Street/Strip use, with 125 + HP kit, or medium blower, w/2500 rpm stall, use 3.73 rear gears, rough idle, 2400-6500 RPM range, 0.487/0.501 Lift (IN/EX) 274/282 Dur. Adv. (IN/EX) 230/244 Dur. @ 0.050" (IN/EX)

FORD 5.0L 1982-95 Factory hydraulic roller, carb or E.F.I., billet steel roller cam, High performance street, use with 75-125 HP kit, or small blower, w/2000 rpm stall, lopey idle, 1500-5600 RPM range, 0.512/0.512 Lift (IN/EX) 264/276 Dur. Adv. (IN/EX) 212/218 Dur. @ 0.050" (IN/EX)

FORD 5.0L 1982-95 Factory hydraulic roller, carb or E.F.I., billet steel roller cam, Street/Strip use, with 100-175 HP kit, or medium blower, w/2500 rpm stall, use 3.73 rear gears, rough idle, 2200-6200 RPM range, 0.555/0.570 Lift (IN/EX) 274/286 Dur. Adv. (IN/EX) 224/236 Dur. @ 0.050" (IN/EX)