gt40p build - Page 2 - MustangForums.com

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5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

gt40p build

Old 03-23-2012, 03:11 PM
  #11  
5.0stang123
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ya i noticed that
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Old 03-23-2012, 03:25 PM
  #12  
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I just did a trickflow stage 1 HCI swap and was just at 300 and the twisted wedge heads have bigger valves and flow better. If you ported the hell out of them maybe all you have really added to the cobra heads is the rockers and a cam which is not going to net you a whole lot more then the cobra did.
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Old 03-23-2012, 03:27 PM
  #13  
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I have almost the same setup on my 5.0 mine needs tuned still yet, but it dyno ran 285hp to the motor. I lack a cam but I have everything else you have on yours, I also need to get mine tuned, I am guessing 300 motor HP after the tune so maybe 270rwhp? I would guess a nice cam would get me near 290RWHP maybe I dunno, maybe not.
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Old 03-23-2012, 03:30 PM
  #14  
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I have GT40 uppers and lowers, and BBK CAI but other than that mine looks to the T same as yours even the same parts, I have 1.8RR.
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Old 03-23-2012, 03:34 PM
  #15  
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are you saying you have Gt40p's or trickflows? 285 hp with a stock cam? That would be impressive.
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Old 03-23-2012, 11:23 PM
  #16  
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with 6lbs of boost from a kenne bell my gt40ps and stock cam made 390 hp
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Old 03-25-2012, 01:02 PM
  #17  
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Originally Posted by ttocs View Post
are you saying you have Gt40p's or trickflows? 285 hp with a stock cam? That would be impressive.
Yep, I can't remember for sure its been a long time. A car show was going on and my car was able to jump on a dyno for free. It was 280 or 285HP to the motor.
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Old 03-28-2012, 02:12 PM
  #18  
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With the maximum amount of port work on my GT40p's, I made 280hp with everything else STOCK. But I was also told my car was a freak.
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Old 03-28-2012, 06:58 PM
  #19  
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Legit
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Old 03-28-2012, 07:35 PM
  #20  
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I must be doing something wrong then for all these untuned cars with a few add ons and a port job on cobra headers to be pushing 300 so easily.....
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