4.6L 4v Tech for the 4V Cobra motors and Mach 1

4.6L Cam Talk

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Old 02-20-2005, 04:47 PM
  #21  
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Originally Posted by StratGT
I have read on the Mod Depot site that Stage II cams are not necessary unless the heads are ported. By the way this is my first post here.
I talked to Scott/VT Engines through PM on another board that i moderate,and asked that very question about needing to port my heads,because i was wondering the same after reading about ported heads,and stage 2 cams on modular depot.This is what he said.



From: Scott@VTEngines
To: 1LOW03GT
Posted: Tue Feb 1 2005 9:23 am
Subject: Re: Hey!
The cams will definately give you great improvements, even with stock heads. A customer of mine in FL recently put down 305rwhp with stock intake, stock heads, our stage2 na cams. THe porting will only add to the power and the range of the cams, but is NOT needed to gain power. The cams will add ~25rwhp peak to peak, and 35+ after 4000rpm.

Thanks
Scott

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It isn't a bad idea to port heads for the stage 2's,it will give you a little more hp,but a the same time,the stage 2 cams can work well even if you don't do any porting.Some guys don't want to pull their heads of,and some do.
And a higher up ford tech that i talk with quite frequently said the same.He stated that the PI heads flow very well compared to the previous years,aswell compared to the ol' 5.0L cylinder heads.
So the descission would be based on how much hp you want to squeeze out of your 4.6 .
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Old 02-20-2005, 04:51 PM
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How much more hp do Stage II cams get over Stage I. Will emmisions become a issue? I have zero problems replacing my cams, but will I need another tune with Stage I or II's.
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Old 02-20-2005, 05:07 PM
  #23  
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Stage 1's don't need a tune,but stage 2's do to my understanding.
Emmisions....the ford tech i talk to said it can be done,but it could also depend on all the extra mods,like long tubes,h pipe,tune,and ects,..
The only true way to find out,is to do it.Most that have done the stage 2's,like the guys on modular depot,don't need the e test done from were most of them are located.(just assuming cause most haven't spoken about e tests )
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Old 02-20-2005, 05:16 PM
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Originally Posted by 1LOW03GT
Stage 1's don't need a tune,but stage 2's do to my understanding.
Emmisions....the ford tech i talk to said it can be done,but it could also depend on all the extra mods,like long tubes,h pipe,tune,and ects,..
The only true way to find out,is to do it.Most that have done the stage 2's,like the guys on modular depot,don't need the e test done from were most of them are located.(just assuming cause most haven't spoken about e tests )
I have the VT Stage II's to be installed this week and it's my understanding that without the tune, the car will run fine but will not idle.

I'm running the cams along with a set of ported heads along with a valve job. Should see some nice gains
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Old 02-28-2005, 06:57 AM
  #25  
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VT Blower Cam sound clips

http://www.digitalsoundz.com/mustang/
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Old 02-28-2005, 10:40 AM
  #26  
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I had the VT Stage II Cams & Comp Springs installed about 2 weeks ago. I ended up gaining roughly 34 RWHP. The cams sound awesome at idle and sound even better at WOT. I'm still having a very small issue with the idle, but my tuner should be emailing me a new tune soon.
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Old 02-28-2005, 10:51 AM
  #27  
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Nice gains! What's the rest of your combo?
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Old 02-28-2005, 10:56 AM
  #28  
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4:10's
Comp Cam Springs
Custom O/R H-pipe
Diablo Sport Predator Tune
Steeda Catback
Steeda U/D Pulleys
VT Stage II Cams
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Old 02-28-2005, 07:44 PM
  #29  
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Originally Posted by 2K GT
I had the VT Stage II Cams & Comp Springs installed about 2 weeks ago. I ended up gaining roughly 34 RWHP. The cams sound awesome at idle and sound even better at WOT. I'm still having a very small issue with the idle, but my tuner should be emailing me a new tune soon.
Nice gains!!

Ooooooh!!!... i can't wait !!!! :biggrin:
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Old 03-01-2005, 11:09 PM
  #30  
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Now you need to get someone to host those vids i sent you 2k GT
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