COMP Cams - 31-331-4
Magnum/Drag Race 253/253 Hydraulic Flat Cam for Ford 221-302
Limited street use or bracket race. 11:1 compression, intake and exhaust. Radical idle. Good for 4 speed or 3500+ stall, 10.5:1+ compression.
Engine Family: Ford 221, 260, 289, 302 c.i. 8 Cylinder (1963-1995)
Cam and Lifter Kit Upgrade: CL31-331-4
K-Kit Upgrade: K31-331-4
Lifter Type: Hydraulic Flat Tappet
SK-Kit Upgrade: SK31-331-4
Amazon ASIN: B000V9HYJU
C.A.R.B. Exempt for Racing and Off-Road Only Vehicles?: Yes, but must be a race/competition only vehicle.
C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?: Yes, but must meet tailpipe emission standards for year of vehicle.
C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?: Yes, but must meet tailpipe emission standards for year of vehicle.
C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?: Yes, but must meet tailpipe emission standards for year of vehicle.
C.A.R.B. Exempt for On-Road Vehicles?: No
C.A.R.B. Exemption Reason: N/A
C.A.R.B. E.O. Number: N/A
Camshaft Series: Magnum
Usage: Street/Strip
Cam Type: Hydraulic Flat Tappet
Grind Number: 305AH-10
Basic Operating RPM Range: 3,000-7000
Intake Duration at .050 Inch Lift: 253
Exhaust Duration at .050 inch Lift: 253
Advertised Intake Duration: 305
Advertised Exhaust Duration: 305
Lobe Separation: 110
Intake Valve Lift: 0.54
Exhaust Valve Lift: 0.54
Lifters Included: No
Valve Springs Required: Yes
Assembly Lubricant Included: Yes
Camshaft Gear Attachment: 1-Bolt
Camshaft Material: Cast Iron
