• Performance lifters recommended but not required.
• Will work with factory pushrods on engines with factory stack up, if deck height, cylinders or rocker boxes have been modified from stock then adjustable pushrods are required, see 246-969, 433-980, 433-981.
• Increased compression, cylinder head work and performance exhaust recommended but not required, increased compression is required for bottom end performance.
• RPM range 2,200 – 5,950.
• Grind: 543
• Intake: .543 Valve Lift, 15 Open, 43 Close, 238 Duration @ .053, .160 lift @ TDC, .104 Lobe Centerline
• Exhaust : .553 Valve Lift, 56 Open, 12 Close, 248 Duration @ 053, .140 lift @ TDC, 112 Lobe Centerline






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