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Discussion Starter #1
Ever since I've started building my newest powerplant I've wondered about what how much camshaft should I be running. My 351 has grown to a 408 and now its appetite for RPM will certainly change. Setting a MAX RPM of 7000 is easy enough. I've ordered a Lunati Solid Roller with 248/[email protected] .050 duration, its rated to 7200RPM in a 370 CID engine. But because of the added cubes from 351 how does one adjust the camshaft duration to coinside with the added cubes and in all likelyhood lower RPM capabilitly of the camshaft? Would some of the strokers out there please share there cams profiles so I'll know I've picked a decent cam?
 

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Cam Specifications


Degrees Duration @ .050 Int./Exh. Degrees Advertised Duration Int./Exh. Degree Lobe Separation Open/Close @.050" Cam Lift Int./Exh. Lash Hot Int./Exh. Gross Lift Int./Exh.
272
276 308
312 106 32 60
66 30 .018
.018 .640
.650

Here are the exact specs out of the Crane catalog for my camshaft in my little 418..........610 hp @ 6800 rpm, and 544 ft lbs tq @ 5100...........
 

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My buddy and I run the same solid roller...one is in a 392 stroker, and mine is in a 347.

gross lift: in: .712 exh. .702
Duration at .050 in: 268 exh. 275
Lobe seperation: 106
int. open: 28 BTDC close: 60 ABDC
Exh. open: 64 BBDC close: 31 ATDC

I do have the engine Dyno results on the 347 if you would like to have them.

Ron
 

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408 stroked, comp. cam part # 35-780-9, valve lift int.696 ex.672, dur.at.50 int.268, ex.275, lobe sep.106.solid roller the only way to go.
 
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