97 GT PI HEAD SWAP DYNO SHEET INSIDE

Discussion in 'SN95 4.6L Mustang Tech' started by theosan, Dec 3, 2004.

  1. MyEarsHurt New Member

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    Cool, I think thats probably what I am going to do....thats what I have been thinking about for a while now. And then I am gonna get a cutom tune at detroit speedworks...so hopefully I will break 300, but I guess I would be happy with 290
  2. 5spd GT "the 5.0 owns all"

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    Ls1's are rated at 305-310 (98-02) but they dyno around 290-295rwhp...why would they dyno that high..."that makes no sense" :D

    A stock 99+ Gt 5spd will dyno anywhere from 225-235rwhp...


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  3. FST BLK Pony Founding Member

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    actually 01-02's will dyno 300+ all day long

    but there is a reason for that...its called a vette
  4. tomustang Psychotic Member

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  5. theosan Founding Member

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    No. Should I and Why ?

    Thanks.
  6. 5spd GT "the 5.0 owns all"

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    I'm talking about the z28's/ss/transam/formula/ws6/etc...

    And they don't neccesarily dyno 300 "all day long"...they go as low as 280rwhp and as high as 310-315rwhp...
  7. tomustang Psychotic Member

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    yes you should, power increase. higher compression so close the gap, .40 trust me you'll feel a difference. :nice:
  8. FST BLK Pony Founding Member

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    i know what you are talking about...the reason they are rated LOW is because of the vette...chevy didn't want to rate a $20k camaro with the same power as a $40k vette...even though it was the same motor. thats why it was underrated.
  9. billyfe390 New Member

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    It wont make any difference. Some people are convinced that closing the gap will make more power with the compression. It wont and they need new wires if it did.
  10. Gearbanger 101 That's my secret, Captain. I'm always angry!!!

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    The reason for closing the gap isn't to make more power; it's to prevent the spark from blowing right out the exhaust port after increasing the cylinder pressure. Guys have been doing it with supercharged set ups for years. Doing it because of a bump in compression is based on the same principal (yet not as extreme). Guess it could account for more power, or rather just not a loss in power.
  11. RysRed96GT I like it FURRY!!!

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    i've heard from other sources that closing the gap on a swapped gt makes more power. they claimed they felt it. i'm gonna try it too on mine and see if i feel it.
  12. Yellow4.6 Founding Member

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    Nice #'s man......With a good tune you'll be close to 270. Get your self some VT cams and you'll love it even more.

    I saw an ad on another site for VT stage 2's forsale! thats what you'll need to get to the 300 mark.

    Congrats!
  13. mia96gts New Member

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    Hey I got all my pi mods for my 96 gts and soon i will be putting it all on. I got a question though. I want to add the vt stage 2 270 cam but do I have to modify the heads?
  14. Winters98GT Founding Member

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    holy batman! You resurrected a 5 year old thread:rlaugh:

    Start a new thread.
  15. COramprat Old guys rule!!!

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    No modification to the heads required but it would be beneficial to ahve the cams degreed in when you install.
  16. Winters98GT Founding Member

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    Nick has proven this is not correct. VT, or now CMS, has revised the stage 2 cams. You need to talk to Nick on this to see if the new revision works.

    The Comp 270's will not work. Both Nick and many others have proven that there is Valve/Piston contact does occur with the VT's and comp 270's.
  17. dustang5398 New Member

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    you can run comp 270's once you get your pistons flycut.... Just get comp 262's and you don't have to worry about any ptv contact or degreeing...

    at the beginning of this thread it was stated that the full pi swap only gabe him 260hp. I've read many other forums where guys have done the swap w/ full bolt ons and made 300hp.....

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