COMP Cams XFI SPR GM Gen IV VVT Camshafts 156-400-13

Rather than find ways around the recent advances in GM engine technology, the engineers at COMP Cams have found a way to work with the innovations to produce a powerful line of cams for newer L92 engines. These COMP Cams XFI SPR GM Gen IV VVT camshafts feature four unique cam grinds that provide substantial gains in both torque and horsepower. The 2007 and later GM L92 engines utilize Variable Valve Timing (VVT) technology, which changes the timing of the valves while the engine is in operation. VVT is controlled via cam phasers, which are computer-controlled cam gears that automatically optimize camshaft timing based on current engine rpm. While this technology provides tremendous efficiency benefits, it presents a challenge when designing performance camshafts. This is due to the wide range of the valve timing movement, which causes piston-to-valve clearance. Using the COMP Cams cam phaser limiter kit restricts the range of cam timing movement from 50 degrees to 20 degrees. While still utilizing the efficiency benefits of the VVT technology, this modification provides the necessary valve clearance for larger, more serious performance camshafts with tighter lobe separations.Brand: COMP Cams
Manufacturer's Part Number: 156-400-13
Part Type: Camshafts
Product Line: COMP Cams XFI SPR GM Gen IV VVT Camshafts
HP Direct Part Number: CCA-156-400-13
UPC: 036584197553
Cam Style: Hydraulic roller, OE roller
Camshaft Use: Street/Strip
Basic Operating RPM Range: 1,300-6,500
Intake Duration at 050 inch Lift: 210
Exhaust Duration at 050 inch Lift: 224
Duration at 050 inch Lift: 210 int./224 exh.
Advertised Intake Duration: 263
Advertised Exhaust Duration: 277
Advertised Duration: 263 int./277 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.556 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.568 in.
Valve Lift with Factory Rocker Arm Ratio: 0.556 int./0.568 exh.
Lobe Separation (degrees): 114
Camshaft Gear Attachment: 1-bolt
Remanufactured: No
Computer-Controlled Compatible: Yes
Grind Number: 263PHR14
Valve Springs Required: Yes
Quantity: Sold individually.
Notes: Must be used with COMP Cams phaser limiter. For use on models with variable valve timing without active fuel management.