COMP Cams 33-602-5 Big Mutha' Thumpr 242/257 Hydraulic Flat Cam for Ford 352-428
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Description
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Installation InstructionsResources
Installation InstructionsSpecifications
| Advertised Exhaust Duration | 312 |
| Advertised Intake Duration | 294 |
| Amazon ASIN | B005H89WL8 |
| Assembly Lubricant Included | Yes |
| Basic Operating RPM Range | 2,500-6,400 |
| C.A.R.B. E.O. Number | N/A |
| 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 Federally Certified Vehicles Manufactured Before 1967? | 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. Exempt for Racing and Off-Road Only Vehicles? | Yes, but must be a race/competition only vehicle. |
| C.A.R.B. Exemption Reason | N/A |
| California Proposition 65 | WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov |
| Cam and Lifter Kit Upgrade | CL33-602-5 |
| Cam Type | Hydraulic Flat Tappet |
| Camshaft Gear Attachment | 1-Bolt |
| Camshaft Material | Cast Iron |
| Camshaft Series | Thumpr |
| Description_ASM | Fits Ford FE 352, 360, 390, 406, 410, 427 and 428 |
| Description_DEF | Engine Camshaft |
| Description_DES | Big Mutha' Thumpr 242/257 Hydraulic Flat Cam for Ford 352-428 |
| Description_EXT | Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle. |
| Description_INV | BM-Thmpr 242/257 H-Flat Cam Ford 352-428 |
| Description_KEY | Ford, FE, 352, 428, Super Cobra Jet, SCJ, Cobra Jet, Mustang, Mach 1, Shelby, 332, 361, 390, 406, 410, 427, 428, Truck, F100, F150, Ford Truck |
| Description_SHO | BMT 242/257 HFTd FE |
| Description_SHP | None |
| Engine Family | Ford 352-428 c.i. 8 Cylinder (1963-1977) |
| Exhaust Duration at .050 inch Lift | 257 |
| Exhaust Valve Lift | 0.515 |
| Grind Number | 295TH7 |
| height | 2.75 |
| Intake Duration at .050 Inch Lift | 242 |
| Intake Valve Lift | 0.531 |
| K-Kit Upgrade | K33-602-5 |
| length | 24.5 |
| Lifter Type | Hydraulic Flat Tappet |
| Lifters Included | No |
| Lobe Separation | 107 |
| LTL | N |
| Title | Big Mutha' Thumpr 242/257 Hydraulic Flat Cam for Ford 352-428 |
| Usage | Street/Strip |
| Valve Springs Required | Yes |
| weight | 10.54 |
| width | 3.0 |