2.2T cam vs 2.5NA cam in 2.5NA head

[ssspoon@aol.com]

Hi List and Josh

Thanx for the feedback. Looks like the 2.5 head and 2.5 cam is it for me.
Latest word is the 2.2T cam wont fit the 2.5 NA head anyway

I have purchased the 2.5 Phase II heads which is the later 1999 forward SOHC configuration. I think you are correct about the DOHC setup as the better one in theory, but I think that applies to an all out race application. I believe I have heard that the DOHC heads can be made to support higher RPM's. However for the street, the newer SOHC design has the advantage of using a high tech mechanical roller rocker design at the end of solid lifters vs the DOHC non roller hydraulic lifter design.
According to Cobb Tuning, this means the SOHC can be made to take the valve from fully closed to fully open faster without keeping the valve open for a longer period, which allows more power without sacrificing good idle, drivability, etc. That's for me.

That muscle car radical loping "camey" idle is cool, but is usually associated with a performance cam in a normally aspirated engine. Force fed applications change a lot of things the N/A guys have to do to get power.

BUT I REALLY WANT TO TALK TO SOMEBODY THAT HAS MADE THIS HEAD SWAP ABOUT OTHER STUFF LIKE WATER JACKETS AND OIL GALLERIES.
PLEASE SOMEBODY PUT ME IN TOUCH WITH AN EXPERIENCED SWAPPER!

Larry Witherspoon.



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