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12-19-2011, 09:51 PM | #1 |
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Join Date: Jul 2011
Location: Whitakers, NC
Posts: 90
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Sean Hyland "Road Race" Cam Specs
Just kinda curious about this Sean Hyland "Road Race" cam. Lift is only 0.385 which is considerably less than most other performance cams.
Anyone have a clue as to "why" it is only 0.385? I understand these Modular engines respond better to duration than lift. Guess it would help prevent spring failure - maybe??? Why would a "road racer" select this cam as compared to the more common Comps, etc. that have 0.425 (or more) lift? Specs: Road Race Cam Cam Timing .050 Opens 4 ATDC Closes 46 ABDC Centerline 111 Duration 222 Valve lift .385 Cam Timing .050 Opens 36 BBDC Closes 12 ABDC Centerline 102 Duration 228 Valve lift .385 |
12-20-2011, 09:39 AM | #2 |
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Join Date: Dec 2007
Location: beavercreek, oh
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Re: Sean Hyland "Road Race" Cam Specs
Spring life, that's the only reason. It will give up some power but not a lot.
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12-20-2011, 05:41 PM | #3 |
Valve bender backer
Join Date: Mar 2011
Location: Orlando
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Re: Sean Hyland "Road Race" Cam Specs
Actually knowing Sean Hyland they are regrinds, and you have to lower the lift on a regrind if you don't want to shim the lash adjuster or run a longer valve past a certain duration point.
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12-21-2011, 09:50 AM | #4 |
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Join Date: Dec 2007
Location: beavercreek, oh
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Re: Sean Hyland "Road Race" Cam Specs
SHM has billets with those specs also.
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