Thumper lovers comp tjhumper lobes are on page 12 of the comp lobe catalog no .904 lobes
Roll your own based on your needs
following as some cams in the Thumper range
[email protected] .050 .200 lift .200 where avilable
Engle K56 274 224 149 .336 .504
XE275HL 275 231 153 .525 110LCA IC 64 ABDC Smallest comp .904 lobe
Lunati 704 276/284 234/242 .513/.533 110LCA Voodoo
Howard 277/283 230/236 531/537 110 LCA
340 cam 279 210 .429 2899206 intake @.006 stock 340 cam for comparison at 0.006
Thumper 279-296 227/241 486-473 107
318 Whiplash ??? 213 480 109 LCA Hughes
340 Whiplash ?? 223 550 107 LCA Hughes
Purple Plus 280 233 148 .316 ,474 smallest Comp PP .904 lobe
Rattler 281 227 .480 Howard
voodoo 279 234 .513 voodoo intake lobe
XE-HL 279 235 153 .356 .534
...............006 .050 .200 lift
Howards 279 256 232 152 .357 .535
Engle K58 282 230 148 ,343 ,514
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The super long exhaust makes no sense to me if headers or late/ aluminum heads and long even for stock heads
ask yourself are you limited to half inch lift
It would seem that the 340 Whiplash would Thump the Thumper and Rattler
and the top four cams would be a better choice or get those lobes ground on whatever LCA floats your boat
The bottom 4 are a little bigger than the thumper intake but may have a better intake/ exhaust split some exhaust lobes are not shown U pick