I am a little worried it is to radical canyou guys reasure or tell me he is crazy........
tappet lift 313 322
valve timing @20 int open close
49 84
ex 91 51

duration @ 50 int 276 ex 284
lobe lift .4400 .4200

gross valve lift int .748 ex .714
lobe seperation 110.0

old cam was as follows

gross valve lift .661 .668
[email protected] tappet lift 291 297
valve timing open @50 int open close
15 59
ex 62 18
Dur @ 50 int 250 ex 260
lobe lift .3890 .3930
lobe sep 112.0




it took me forever to type this

Is john force your engine builder ? tell us more about your motor,the cam seems humungous to me,obviously you must be running a large, high compression motor and your cam must be a solid roller. One of our in house cam experts will be able to judge it better but to me it sounds like a 7500rpm drag boat cam,Smitty

Did your old cam seem too small? What rpm's do you want your power to peak at? How heavy is your boat,what is your cu inch and compression ratio,without this info we can only make a W.A.G. but it still seems like a big daddy drag cam to me,Smitty

540 just over 9 and a half to one comp dart heads jesel roller lifters and stud girdels j and e pistons, h beam rods .....It seemed a bit much for me to....Peak rpm around 5800 50 6000

to big , and on a 110 you will need dry pipes

That cam is huge and will be a parts breaker.A cam that big in a 540 will rev to 7000

9.5 to 1 compression is not enough for that cam.
More like 12.5.

Thats a Drag Cam for sure.

what am i supposed to tell this guy if he is steering me in the wrong direction

Tell him you are the guy paying the bill.

thats more cam than you need or want with that motor, My motor likes this. @50 269-276, lobe lift402-406. gross lift 683-690. lobe sep.110 in cl 108. @50 26.5btc cl 62.5abc . ex 70bbc 26atc. These cams are easy on valve springs. These are solid roller with a 4-7 swap and cast gear, i had them done at custom cams in etta ms. 662-534 4881. Brian