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Low Dyno #'s, 408 l92's pat G cam

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Old 06-16-2008 | 10:38 AM
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Originally Posted by Patrick G
OK, now I see the recommendation. From July 2007. As you can see from the explanation and the dyno sheet, this is a nitrous-biased cam (200-300 shot). The curve of the 100 shot dyno show that your valve events are consistent with what will pull into the 7200 rpm range, but the pull is not as clean NA. This leads me to believe you're getting an intake restriction. Could be the intake elbow. Not many people have performed well with them on single planes unless they're running forced induction or nitrous. It would be interesting to see how you'd run with an Accufab top-mount throttle body.
I have that TB coming. What about the cam being installed 2 degrees retard. how much would that hurt the power.
Old 06-16-2008 | 10:44 AM
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Originally Posted by IH8FORD
I have that TB coming. What about the cam being installed 2 degrees retard. how much would that hurt the power.
It won't hurt power so much, but it will bias the engine further to making peak power at a higher rpm.
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Old 06-16-2008 | 11:21 AM
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Originally Posted by Patrick G
It won't hurt power so much, but it will bias the engine further to making peak power at a higher rpm.
Sounds good, I appreciate the help I will post up the new #'s when I get the new TB and try it on a 200 shot too.
Old 06-16-2008 | 07:26 PM
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Please do! Good luck with the new numbers
Old 12-05-2008 | 07:19 AM
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im curious..what happened to this?
Old 12-05-2008 | 08:08 AM
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This seems to be an old thread, but was the cam degree'd? If not why was it retarded 2 degrees?
Old 12-06-2008 | 06:41 AM
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Originally Posted by VIPERBLUELX
This seems to be an old thread, but was the cam degree'd? If not why was it retarded 2 degrees?
The machine shop that did the engine installed the cam and the guy who degreed the cam appeared to be having some difficulty reading the cam card. He said that he had retarded the cam to get the proper timing, and we didn't think anything about it. But after looking at the cam card later on we was the it was ground within a degree of what it was supposed to be, meaning that it need to be installed straight up.

Originally Posted by CBIII
im curious..what happened to this?
There have been a few road blocks. After the dyno session the cam has been straightened out, he has a different added a 4150 style TB, fixed some electrical issues and fixed some of the problems with the tuning (or tuner). Transmission have been the real issue from getting to the track, but that is also coming together. New stall will be in Tuesday, and might have some motor track times next weekend if the weather is good and maybe some 150 shot runs also if everything looks to be in order.

If nothing bad happens there then some 300 shot runs will soon follow.

Jon
Old 12-06-2008 | 06:50 AM
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I'm interested to see what it does as well..
Old 12-06-2008 | 09:59 AM
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Originally Posted by JonCR96Z
...fixed some of the problems with the tuning (or tuner).
Did you do a Creech-ectomy?
Old 12-07-2008 | 01:41 AM
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Originally Posted by ElecTech
Did you do a Creech-ectomy?
Something like that.
Old 12-07-2008 | 09:09 AM
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Originally Posted by JonCR96Z
Something like that.
Numbers?
Old 12-07-2008 | 04:06 PM
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Originally Posted by CBIII
Numbers?

The only real dyno numbers he has are above. After the TB swap it went back to C.A.M. and it was running rich, Jeff proceeded to lean it out and it was all down hill from there. All it would ever do was just surge on the dyno. He loaded about 3 different tunes with no noticeable difference. The the tranny started acting up (probably from the excessive heat off of the super lean engine) and puked fluid out the overflow. That was it for that day.

After getting HPtuners and comparing some VE tables from similar engines and some timing adjustments it cranks and runs better than ever. Once the transmission is back in we will get some more logs and better the tune. Then we will get some track times.
Old 12-07-2008 | 05:54 PM
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Originally Posted by blu1
problem #1, Jeff Creech touched the car.
Finally someone said it.
Old 12-07-2008 | 06:18 PM
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Originally Posted by 03 BUSA
Finally someone said it.
The Milkman strikes again..
Old 12-07-2008 | 07:25 PM
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The converter will be in Monday and I have the trans waiting to go in it. Joncr96z and I have been playing with my 07 silverado to pass the time.

Here is a little Vid.
http://www.youtube.com/watch?v=fMxEs3LeFgU
Old 12-07-2008 | 07:55 PM
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Take it to Raleigh and get it tuned at Mayhem. Good luck either way.
Old 12-07-2008 | 08:20 PM
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Originally Posted by wyndzer
Take it to Raleigh and get it tuned at Mayhem. Good luck either way.
Tune is not an issue now. Besides didnt mayhem just tune a c6 with a blower and lT's and it is no longer running. Which is why I will take care of things myself.
Old 12-07-2008 | 08:25 PM
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A build like this (OLSD and nitrous) needs to be dialed in every so often, which would be too expensive and not as effective as doing the tuning ourselves whenever it needs it.

Last edited by JonCR96Z; 12-07-2008 at 08:46 PM.
Old 12-08-2008 | 11:11 AM
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Originally Posted by ElecTech
Did you do a Creech-ectomy?
The truth.....


If you can't straighten it out three letters...... RPM
Old 12-08-2008 | 11:46 AM
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Originally Posted by IH8FORD
The converter will be in Monday and I have the trans waiting to go in it. Joncr96z and I have been playing with my 07 silverado to pass the time.

Here is a little Vid.
http://www.youtube.com/watch?v=fMxEs3LeFgU
hahaha dogs barking, car alarms sounding, tires screeching and all this from a cammed truck with I hate Ford plates and plenty of exhaust cant see a better of passing the time.
Good luck and get this thing back together to see what she can do w/ that 300 shot


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