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Specifications:
| Camshaft Series | Thumpr |
| Usage | Street/Performance |
| Cam Type | Hydraulic Roller |
| Grind Number | 283THR7 |
| Basic Operating RPM Range | 1,900-5,600 |
| Intake Duration at .050 Inch Lift | 227 |
| Exhaust Duration at .050 inch Lift | 241 |
| Advertised Intake Duration | 283 |
| Advertised Exhaust Duration | 303 |
| Lobe Separation | 107 |
| Intake Valve Lift | 0.557 |
| Exhaust Valve Lift | 0.539 |
| Lifters Included | No |
| Valve Springs Required | Yes |
| Assembly Lubricant Included | No |
| Camshaft Gear Attachment | 1-Bolt |
| Camshaft Material | Billet Steel |
| Engine Family | Ford 352-428 c.i. 8 Cylinder (1963-1977) |
| Cam and Lifter Kit Upgrade | CL33-600-11 |
| California Proposition 65 | WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov |
| K-Kit Upgrade | K33-600-11 |
| Lifter Type | Hydraulic Roller |
| Title | Thumpr 227/241 Hydraulic Roller Cam for Ford 352-428 |
| Amazon ASIN | N/A |
| 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 |
| 10602 | 283THR7 |
| Description_KSW | Cobra Jet |
| Description_KSW | Mustang |
| Description_KSW | Mach 1 |
| Description_KSW | Shelby |
| Description_KSW | 332 |
| Description_KSW | 361 |
| Description_KSW | 390 |
| Description_KSW | 406 |
| Description_KSW | 410 |
| Description_KSW | 427 |
| Description_KSW | 428 |
| Description_KSW | Truck |
| Description_KSW | F100 |
| Description_KSW | F150 |
| Description_KSW | Ford Truck |
| Description_DES | Thumpr 227/241 Hydraulic Roller Cam for Ford 352-428 |
| Description_APS | Fits Ford FE 352 |
| Description_APS | 360 |
| Description_APS | 390 |
| Description_APS | 406 |
| Description_APS | 410 |
| Description_APS | 427 and 428 |
| Description_EXT | High performance street |
| Description_EXT | stock converter ok |
| Description_EXT | best with 2000+ converter and gears |
| Description_EXT | choppy/thumping idle. |
| Description_SHO | T 227/241 HRlrFE |
| Description_INV | Thumpr 227/241 H-Roller Cam Ford 352-428 |
| Description_KSW | Ford |
| Description_KSW | FE |
| Description_KSW | 352 |
| Description_KSW | 428 |
| Description_KSW | Super Cobra Jet |
| Description_KSW | SCJ |
| Description_DEF | Engine Camshaft |