Re: Porting na head
Will my stock CAM gears work with this cam? (I’m hoping so since the duration is only 6 degrees longer than stock) I shouldn’t need adjustable cam gears right?
Crane clams “good idle quality” with this cam, but is that “good” for a cammed up motor or good compared to stock? Any experience with this?
Will this cam raise my redline or is that determined by the computer?
Will the stock rings hold up against the increased compression? Or should I expect increased oil consumption?
Will my PT computer and injectors be able to maintain the proper A/F ratio? (the cams not that wild so I’m hoping so, since you're already running a #12 crane cam with stock PT injectors/computer)
Will the engine require some level of “tuning” to run well, or will the computer be able to make the adjustments on it’s own?
My #12 idles good, just a enough lump to make it sound different, but does not hesitate any when reving up from idle.
The stock gears will work with the cams, you just will not be able to fine tune them. I have not got onto the dyno yet, but I am guessing the -3 exh, +2 intake will make them perfect. But even at zero, they are surpassing stock performace in a big way.
The cams will raise your redline power, but not the redline cut. The computer will kill the engine before it reaches maximum power now, which is around 7,200 RPM.
Your stock internals, computer, injectors are fine. The injectors are good for some pretty good HP and the computer is pretty smart. Only thing is that it will always try to run rich to be safe. A AFC computer will allow you to lean it out for a little more power.
I am getting a lot of my tunning info from the SRT guys who are building lots of power in their cars. We have the same motor as them but there are a lot more of them racing than we are.
Many of the SRT guys have tried to convice me to go Turbo, but I felt that my project car is more "old school" in styling. I wanted to keep the motor NA, loud and quick to rev on the power. That is a great combination for street performance. Not many places other than the track, to kick it for more than 15 seconds anyway. Stop light to stop light in my town is much shorter than that. But the shock on the guy's face next to me who has a turbo is great. He does make more top-end power than I do, but never gets to use it. I launch, make lots of noise and already slow down for the next street before he gets to make any power. :-)
Now on the highway, it is a different story, I can kick it, quickly move ahead by a good car because of the quick power, but about 3 seconds later a well built 50trim turbo car will blow by me like I was nothing.
Last edited by Deathstar : 04 Jun 2008 at 03:54 pm.
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