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MS wrote:
Most folks will appreciate an engine that keeps on running alot more than an extra 1/10 of a horsepower at 6,000 rpm will be noticed.
OH STEVE!!..........you're such a ........realist!! What fun is that?! ( : J/K
6s6
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Soo Michael........the Mustang runs on pretty good, huh?!
FYI......By putting a "slightly larger camshaft" in that in its self raised the CR. By closing the intake valve a little sooner it "traps" a little more air as the piston moves up the cylinder on the compression stroke. Least that's how I understand it.
Piston-to-valve "interference" may occur when the EXHAUST valve hangs open a little too long as the piston passes TDC on the way down.
This is -oh no I used a word I shouldn't have--uming there is minimal clearance to begin with.
This kind of crap intrigues me to no end!!!!!
All kinds of stuff is happening in a split second as the pistons fly up & down.............crazy!
6sal6
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It depends on the grind. In general a larger camshaft is going to have more overlap, being ground on a narrower LSA, and that's going to bleed off compression, especially at lower RPM. With the exhaust valve open longer, and earlier to improve high RPM scavenging you're blowing compression out the exhaust.
A cam with a wide LSA and bigger lobes may help a bit, but in general you just need to match the cam to the compression to the intake to the everything to get the best results.
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