[email protected] wrote: > I have heard from a few people that the Kents are > spec'd on a different scale, so I need someone who > understands cams very well to compare them and explain > any/all differences. I think they are measured at > different lifts?
That's usually the case. The "industry standard" method for specing cam duration's is at .050" lift. A lot of cam grinders and folks who retail to the general public (not racers) advertise durations at 0.00" lift, which gives noticeably larger numbers. The really good cam people will provide a spec sheet with both those numbers, as well as a bunch of other data. I bought a cam for my '78 Toyota Corona wagon from TRD, and they provided a comprehensive spec sheet which had more info than just about anyone could possibly use. > Are the TT sets same rate for intake/exhaust? I know > that Kent now switched their '258' set from the same to > a split set,...but if I am not mistaken, they are using > a larger INTAKE with a smaller exhaust, as opposed to > the U.S. tuners who seem to like the larger exhaust- > which DOES seem to make sense with the design of the > exhaust ports. I would be surprised if Kent actually went with more duration on the intake than the exhaust. It doesn't follow the known flow characteristics of 16V heads and manifolds. The most powerful and efficient cam combo for street use that I'm aware of is a 260 deg intake and 276 deg exhaust. I know, that's what the Velocity test came up with, but it really does work extremely well from everything I've heard. I'm going to try it as soon as I can find a 276 Schrick exhaust cam that is available by itself. --Holland [email protected] San Jose, CA
