Race Day LS Camshaft (238/252-108.5+3.5) for "Single Plane" Rectangle Port

Product Description Standard Lift: Grind # XA238/365-XA252/350-08.5+3.5 Drag Racing Duration at .050: 238/252 108.5 Lobe Center Angle with a 105 Degree Intake Centerline Lift with 1.7 Rocker Arm Ratio: .621″/.604″ Recommended Displacement: 5.7-6.2 Liter Engines Cylinder Heads: Rectangle Port Recommended Compression Ratio: 11.75-13:1 Recommended Headers: 1 3/4″ – 1 7/8″ Recommended Stall Converter: 4500-5500 Recommended Rear Axle Ratio: 4.11-4.88 *Specifically designed for single plane and other short runner intake manifolds. High Lift: Grind # XA238/380-XA252/370 -08.5+3.5 Drag Racing Duration at .050: 238/252 108.5 Lobe Center Angle with a 105 Degree Intake Centerline Lift with 1.7 Rocker Arm Ratio: .646″/.629″ Recommended Displacement: 5.7-6.2 Liter Engines Cylinder Heads: Rectangle Port Recommended Compression Ratio: 11.75-13:1 Recommended Headers: 1 3/4″ – 1 7/8″ Recommended Stall Converter: 4500-5500 Recommended Rear Axle Ratio: 4.11-4.88 *Specifically designed for single plane and other short runner intake manifolds. This Race Day “Single Plane” – Rectangle Port camshaft is designed for Drag Racing applications in cars using 6.0-6.2 liter LS engines equipped with rectangle port, LS3/L92 style heads and single plane intake manifolds like the Victor, High Ram, Mid Ram and GMPP style intake manifolds. Designed with the budget racer in mind, this camshaft is ideal for the enthusiast who is looking to get great results while maintaining a modest RPM range. This camshaft is intended to be used with high compression and the proper racing fuel for best results. The base version of this camshaft is designed to work with stock rocker arms and quality performance hydraulic lifters. This camshaft will have a rough, racecar idle. A high lift version of this camshaft is also available for those using aftermarket roller rocker arms. This camshaft requires pistons with valve reliefs for proper piston-to-valve clearance. This camshaft requires intake and exhaust modifications for maximum flow. Headers, open or racing exhaust, racing intake systems, properly suited racing torque converter and optimal rear axle ratios to achieve maximum performance. This Race Day cam is designed with our renowned smooth cam lobe design that provides quiet valve train operation and excellent upper rpm stability. Cam Motion offers this cam in 5150, 8660 and our top of the line 8620 camshaft cores. You can read more about our cam cores here > Cam Motion’s cam cores Recommended Accessories: •Cam Motion .660″ lift Dual Valve Spring Kit •Cam Motion 5/16″ .080″ Wall Hardened Chromoly Pushrods •Cam Motion High Performance Hydraulic Lifters *This camshaft will require pistons with valve reliefs for proper piston-to-valve clearance. NOTE: A low lash solid roller version of this camshaft is also available and may be an excellent upgrade for this application.