ThumprT 283THR7: Cam & Lifters
ThumprT : High performance street, stock converter ok, best with 2000+ converter and gears, choppy/thumping idle.
Specifications
Lifter Type: Hydraulic
Engine Family: Ford 351C, 351M-400M 8 cyl. 1970-1982
Cam Family: Retro-Fit Hydraulic Roller Camshaft
RPM Range: 1900 to 5600
Valve Timing: .006
Lobe Separation: 107°
Intake Centerline: 102°
Valve Lash: Hyd. (Intake) / Hyd. (Exhaust)
Duration: 283 (Intake) / 303 (Exhaust)
Duration @ .050" Lift: 227 (Intake) / 241 (Exhaust)
Valve Lift: .557 (Intake) / .539 (Exhaust)
Lobe Lift: .3220 (Intake) / .3120 (Exhaust)
Vehicle Fitments:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1971 - 1974 | DeTomaso | Pantera | Base |
| 1981 - 1985 | DeTomaso | Pantera | GT5 |
| 1984 - 1986 | DeTomaso | Pantera | GT5-S |
| 1981 | DeTomaso | Pantera | GTS |
| 1978 - 1982 | Ford | Bronco | Custom |
| 1978 | Ford | Bronco | Northland |
| 1978 - 1981 | Ford | Bronco | Ranger XLT |
| 1982 | Ford | Bronco | XLT Lariat, XLS |
| 1969 - 1974 | Ford | Country Sedan | Base |
| 1969 - 1974 | Ford | Country Squire | Base |
| 1969 - 1972 | Ford | Custom | Base |
| 1969 - 1977 | Ford | Custom 500 | Base |
| 1975 - 1977 | Ford | Custom 500 | Ranch Wagon |
| 1980 - 1981 | Ford | E-250 Econoline | Custom, Chateau, Base |
| 1980 - 1981 | Ford | E-250 Econoline Club Wagon | Custom, Chateau, Base |
| 1980 - 1981 | Ford | E-350 Econoline | Chateau, Custom, Base |
| 1980 - 1981 | Ford | E-350 Econoline Club Wagon | Base, Custom, Chateau |
| 1975 - 1976 | Ford | Elite | Base |
| 1977 - 1978 | Ford | F-100 | Northland |
| 1978 - 1979 | Ford | F-100 | Ranger Lariat |
| 1977 - 1979 | Ford | F-100 | Ranger, Custom, Base, Ranger XLT |
| 1977 | Ford | F-100 | XLT |
| 1977 - 1978 | Ford | F-150 | Base, Northland |
| 1977 - 1981 | Ford | F-150 | Custom, Ranger XLT, Ranger |
| 1978 - 1981 | Ford | F-150 | Ranger Lariat |
| 1977 | Ford | F-150 | XLT |
| 1977 - 1978 | Ford | F-250 | Base, Northland |
| 1978 - 1981 | Ford | F-250 | Ranger Lariat |
| 1977 - 1981 | Ford | F-250 | Ranger, Ranger XLT, Custom |
| 1977 | Ford | F-250 | XLT |
| 1977 - 1978 | Ford | F-350 | Northland |
| 1978 - 1981 | Ford | F-350 | Ranger Lariat |
| 1977 - 1981 | Ford | F-350 | Ranger, Ranger XLT, Custom, Base |
| 1977 | Ford | F-350 | XLT |
| 1969 - 1970 | Ford | Fairlane | 500 |
| 1969 | Ford | Fairlane | Base |
| 1970 | Ford | Falcon | Futura, Base |
| 1969 - 1974 | Ford | Galaxie 500 | Base |
| 1969 - 1970 | Ford | Galaxie 500 | XL |
| 1973 - 1976 | Ford | Gran Torino | Brougham |
| 1974 - 1975 | Ford | Gran Torino | Elite |
| 1972 - 1975 | Ford | Gran Torino | Sport |
| 1972 - 1976 | Ford | Gran Torino | Squire, Base |
| 1969 - 1986 | Ford | LTD | Base |
| 1970 - 1986 | Ford | LTD | Brougham |
| 1975 - 1986 | Ford | LTD | Country Squire |
| 1986 | Ford | LTD | Country Squire LX, Crown Victoria LX |
| 1985 - 1986 | Ford | LTD | Crown Victoria |
| 1975 - 1978 | Ford | LTD | Landau |
| 1985 | Ford | LTD | LX Brougham |
| 1977 - 1978 | Ford | LTD II | Brougham |
| 1979 | Ford | LTD II | Landau |
| 1977 - 1979 | Ford | LTD II | S, Base |
| 1977 | Ford | LTD II | Squire |
| 1969 - 1973 | Ford | Mustang | Base |
| 1969 - 1971 | Ford | Mustang | Boss 302 |
| 1971 - 1972 | Ford | Mustang | Boss 351 |
| 1970 - 1973 | Ford | Mustang | Grande, Mach 1 |
| 1969 - 1970 | Ford | Mustang | Shelby GT-350, Boss 429, Shelby GT-500 |
| 1969 - 1974 | Ford | Ranch Wagon | Base |
| 1970 | Ford | Ranch Wagon | Police Cruiser |
| 1969 - 1979 | Ford | Ranchero | 500, GT |
| 1969 - 1971 | Ford | Ranchero | Base |
| 1970 - 1979 | Ford | Ranchero | Squire |
| 1972 - 1979 | Ford | Thunderbird | Base |
| 1978 | Ford | Thunderbird | Diamond Jubilee |
| 1979 | Ford | Thunderbird | Heritage |
| 1978 - 1979 | Ford | Thunderbird | Town Landau |
| 1971 | Ford | Torino | 500 |
| 1970 - 1976 | Ford | Torino | Base |
| 1970 - 1971 | Ford | Torino | Super Cobra Jet, Squire, Cobra, GT, Brougham |
| 1977 - 1979 | Lincoln | Continental | Base |
| 1977 - 1979 | Lincoln | Mark V | Base |
| 1970 - 1974 | Mercury | Colony Park | Base |
| 1969 - 1970 | Mercury | Comet | Base |
| 1970 - 1979 | Mercury | Cougar | Base, XR-7 |
| 1970 - 1971 | Mercury | Cougar | Boss 302, Cobra Jet |
| 1970 | Mercury | Cougar | Boss 429 |
| 1977 | Mercury | Cougar | Brougham, Villager |
| 1969 - 1971 | Mercury | Cyclone | Base, Spoiler |
| 1969 | Mercury | Cyclone | CJ |
| 1970 - 1971 | Mercury | Cyclone | GT |
| 1975 - 1986 | Mercury | Grand Marquis | Base |
| 1980 - 1986 | Mercury | Grand Marquis | Colony Park |
| 1986 | Mercury | Grand Marquis | LS |
| 1970 - 1980 | Mercury | Marquis | Brougham, Base |
| 1975 - 1976 | Mercury | Marquis | Colony Park |
| 1975 | Mercury | Montego | Brougham |
| 1972 - 1973 | Mercury | Montego | GT |
| 1970 - 1976 | Mercury | Montego | MX Brougham |
| 1976 | Mercury | Montego | MX Villager |
| 1969 - 1976 | Mercury | Montego | MX, Base |
| 1970 - 1975 | Mercury | Montego | Villager |
| 1970 - 1974 | Mercury | Monterey | Custom, Base |