08-21-2017, 09:06 AM
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CC Member
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Join Date: Feb 2014
Location: White City,
SK
Cobra Make, Engine: West Coast, 460 CID
Posts: 2,908
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Quote:
Originally Posted by FatBoy
I've never had to spec a cam before, so are you able to elaborate a little please?
"more split between the duration" does that mean more or less duration, or something else? 
With regard to the lobe separation, do I need to be looking in the 110-112 region? What does changing the lobe separation do and is it the inlet that is opening later, or the exhaust that is opening sooner or a bit of both if I reduce the LSA?
Whilst I'm more than happy to accept your experience, I do like to understand why I'm doing something.
ATB,
Paul |
"more split between the duration" means you'll have more duration on the exhaust side than on the intake, often in the range of 6°. For example, you could go 242° duration @ 0.050" on the intake, and 248° on the exhaust.
LSA:
TECH QUICKIE: Camshaft Lobe Separation Angle And Power Relationship
Camshaft Shootout: Lobe-Separation Angle Tested and Explained - Hot Rod Network
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Brian
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