COMP Cams best with 2000+ converter and gears. Choppy/thumping idle. 31-601-5
Specifications:
| Camshaft Series | Thumpr |
| Usage | Street/Performance |
| Cam Type | Hydraulic Flat Tappet |
| Grind Number | 279TH7 |
| Basic Operating RPM Range | 2,000-5,800 |
| Intake Duration at .050 Inch Lift | 227 |
| Exhaust Duration at .050 inch Lift | 241 |
| Advertised Intake Duration | 279 |
| Advertised Exhaust Duration | 296 |
| Lobe Separation | 107 |
| Intake Valve Lift | 0.491 |
| Exhaust Valve Lift | 0.476 |
| Lifters Included | No |
| Valve Springs Required | Yes |
| Assembly Lubricant Included | Yes |
| Camshaft Gear Attachment | 1-Bolt |
| Camshaft Material | Cast Iron |
| Engine Family | Ford 221, 260, 289, 302 c.i. 8 Cylinder (1963-1995) |
| Cam and Lifter Kit Upgrade | CL31-601-5 |
| California Proposition 65 | WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov |
| K-Kit Upgrade | K31-601-5 |
| Lifter Type | Hydraulic Flat Tappet |
| Title | Thumpr 227/241 Hydraulic Flat Cam for Ford 221-302 |
| Amazon ASIN | B0051PP9VE |
| 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 | 279TH7 |
| Description_SHO | T 227/241 HFT221-302 |
| Description_INV | Thumpr 227/241 Hyd Flat Cam Ford 221-302 |
| Description_KSW | Ford |
| Description_KSW | SBF |
| Description_KSW | Mustang |
| Description_KSW | Windsor |
| Description_KSW | Fairlane |
| Description_KSW | Meteor |
| Description_KSW | Mercury |
| Description_KSW | GT |
| Description_KSW | 22 |
| Description_KSW | 260 |
| Description_KSW | Sunbeam |
| Description_KSW | Tiger |
| Description_KSW | 289 |
| Description_KSW | 302 |
| Description_KSW | 351 |
| Description_KSW | 289 |
| Description_KSW | HiPo |
| Description_KSW | K-Code |
| Description_KSW | GT-350 |
| Description_KSW | Shelby |
| Description_KSW | Boss |
| Description_KSW | 5.0 |
| Description_KSW | 308 |
| Description_KSW | Windsor |
| Description_KSW | Torino |
| Description_KSW | Cougar |
| Description_KSW | F-150 |
| Description_KSW | Squire |
| Description_KSW | Thunderbird |
| Description_KSW | LTD |
| Description_KSW | Galaxie |
| Description_KSW | Grand Marquis |
| Description_DES | Thumpr 227/241 Hydraulic Flat Cam for Ford 221-302 |
| Description_APS | Fits Ford 221 |
| Description_APS | 255 |
| Description_APS | 260 |
| Description_APS | 289 and 302 Small Block |
| Description_EXT | High performance street |
| Description_EXT | stock converter ok |
| Description_EXT | best with 2000+ converter and gears. Choppy/thumping idle. |
| Description_MKT | Designed to deliver an aggressive |
| Description_MKT | hard-hitting exhaust note at idle |
| Description_MKT | the Thumpr camshaft series from COMP Cams also delivers excellent horsepower gains and a broad torque curve. A perfect choice for muscle cars and street rods |
| Description_MKT | the Thumpr series' early intake valve opening and long exhaust duration create optimum overlap for that race car idle. The Thumpr grinds all require an aftermarket torque converter and lower gear ratio to ensure the drivetrain always puts the engine in its powerband. Additionally |
| Description_MKT | Thumpr camshafts typically deliver reduced vacuum at idle |
| Description_MKT | making a vacuum canister |
| Description_MKT | pump or hydroboost a requirement for vehicles running power brakes. |
| Description_DEF | Engine Camshaft |