^never touched those engines
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I've swept the cams on hellcats and 6.4's with little to no gains. Have not tried a 5.7 but I assume it is similar.
The WOT settings are on the money for an NA.
If S/C, they can use some tweaking.
The PT settings however are purposely lame for emissions.
Bringing these closer to WOT settings will liven the engine up lots and go a ways to
eliminating the slow and then GO throttle response as you lean on the pedal.
Attachment 64814
So I'm guessing If I smooth out my WOT cam profiles to the average WOT settings it should help with the midrange dip?
Attachment 64815
If I keep the cam within the Base and Max centerlines would I be safe to prevent PV issues?
How can I get the pt settings closer to the wot numbers? On my tune the pt table is 3D with 100? across the board. Would I take the ramp from the wot table and spread it across the x axis.... While adjusting the Y axis for the aircharge? As in using the WoT x axis at .08grams but making it milder... While in the .70grams x axis making it the same as the WOT table.
Screenshot (1).png
This is how I am understanding the PT cam setting. Am I way off base or somewhere close to where I should be?
For the NA V8's with stock cams I can confirm that there are no gains to be had by moving the cam at WOT. We have tried this on many 5.7's and 6.4's
For aftermarket cams in the NA V8's there are some performance gains to be had by modifying the WOT cam table.
For aftermarket cams in the forced induction V8's there are significant gains in modifying the WOT cam table (unless of course a locker kit is used).
When I say cam table I mean the exhaust WOT table. As previously stated there is no sense in changing both tables since there is only one cam.
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Interesting, The Tuning School recently posted some WOT gain on a stock 6.4L but did not mention what they changed in the VVT tables. Any ideas what they did?Originally Posted by [email protected]
https://thetuningschool.com/blogs/news/vvt-in-123
If I remember correctly the intake was set at 109 degrees until around 4,000 rpm at which point it transitioned to 112 degrees.
if i do like photos here, its better for performance and safe ?
Attachment 95153Attachment 95154
@Hemituna @Higgs Boson appreciate your feedback guys
You cant crash the valves, it is physically impossible in a stock engine.
Do try the changes you have made, but it will drive worse than std....well now you will know to maybe try another direction
Read up on (google) cam timing and LC numbers.
Then you will get an idea of what most engines like...the pentastar is like most engines hint, hint.
You will see the that the stock numbers have waaaaay tooooo much overlap, but that is for an egr effect (emissions) not performance or even economy.
good to know that valves cant hit pistons, thanks
i have read in many posts your comment about the overlap and its from factory for EGR , but its not yet clear for me how to calculate the overlap and maybe then i will be able to reduce it
will be great if you can point a direction