Thumper

some larger cams
XE285HL 285/297 242/247 .545/545 110
Howard 285/289 238/242 .555/562 108 in at 104
Voodoo 287 242 . ..........533

Thumper 287/305 235/249 158/165 .507/494

Purple Plus 287 240 153 .316 .474
MP 280 287...................... .474 .474 [email protected] my est for MP 280 cam

Howards HR 290 237 162 .373 .580
Howards HR 291 .......241 159 .367 .550

Howards 291 244 165 .566
PP292H 292/299 257/354 .508/508 108
440 HP ..292 ........213 ................447 115LCA
BradH measured an original 440 HP cam: 292/309 @ .006 lifter
note that it takes 10 degrees to rise from .004 to .006 on the intake but 15 on the exhaust
Lunati ....... ?? 216 ................455 Luniti's version of 440 Magnum

XE295HL 295/307 251/257 564/564 110
Howard 295/301 248/254 .578/590 109 in st 204
Voodoo ....297...... 252 ................552 intake lobe