'The 383' ~ Getting Those True Factory Horsepower Ratings
Mopar 383 ~ 4-Barrel
With Timing Set @ 35* Total Advance
Year ............ Advertised HP ............... True Factory HP
1963 .................. 383 ~ 330 HP .................... 285 HP
1964 .................. 383 ~ 330 HP .................... 285 HP
1965 .................. 383 ~ 330 HP .................... 285 HP
1966 .................. 383 ~ 325 HP .................... 278 HP
1967 .................. 383 ~ 325 HP .................... 278 HP
1967 .................. 383 ~ 280 HP {A-Body} ...... 271 HP
1968 .................. 383 ~ 330 HP ..................... 288 HP
1968 .................. 383 ~ 300 HP {A-Body} ...... 283 HP
1968 .................. 383 ~ 335 HP ..................... 303 HP > {Road Runner / Super Bee}
1969 ................. 383 ~ 330 HP ..................... 288 HP
1969 ................. 383 ~ 330 HP {A-Body} ...... 295 HP
1969 ................. 383 ~ 335 HP ..................... 303 HP > {Road Runner / Super Bee}
1970 ................. 383 ~ 330 HP .................... 288 HP
1970 ................. 383 ~ 335 HP .................... 303 HP > {Road Runner / Super Bee}
1971 ................. 383 ~ 300 HP ..................... 299 HP > {w/Holley Carburetor}