4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

Whats involved in putting a t56 and 5.4 DOHC cobra engine in a 2001 GT?

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Old May 21, 2009 | 06:29 PM
  #11  
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boduke0220
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if it was built it would, but a built 5 speed would be just as strong. its all about the gear ratios. i think the T56 out of a cobra has a .62 6th gear ratio which is the same ratio of the Tr3650 ( essentially the same as your tranny as well) so your not really getting that whole "better MPG" that everyone raves about. BUT there are companies that build T56's and tko 500 & 600's with just about any ratio set up you want whether it be top end ratios or ones made to the strip.

But i agree i would probably go 6 speed to because with all that power you will prob be going through the gears quickly and that extra 5th gear will help out alot.
Old May 21, 2009 | 06:31 PM
  #12  
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boduke0220
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As for the Cams what i mean was, they have a certain degree of overlap or something like that. i heard a few of the members on here talk about it and when paired with a S/c or turbo it would cause a loss of boost, thats what blower cams are for
Old May 21, 2009 | 10:35 PM
  #13  
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you could always get a viper spec t56. it has a .5 ratio for 6th gear. double overdrive baby!
Old May 22, 2009 | 06:35 AM
  #14  
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boduke0220
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really? mmmmm..whats 5th gears ratio?
Old May 22, 2009 | 07:31 AM
  #15  
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the fifth gear is .8 on the viper spec, if i remember correctly. I will also start looking into blower cams then too. thanks for all the help guys, i really appreciate it.
Old May 22, 2009 | 07:32 AM
  #16  
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1st:2.66/2nd;1.78/3rd;1.30/4th;1.00/5th;0.74/6th;0.50
Old May 22, 2009 | 10:47 AM
  #17  
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Originally Posted by devongarver
1st:2.66/2nd;1.78/3rd;1.30/4th;1.00/5th;0.74/6th;0.50
Close 5th is 0.73:1

Out of the box the DD Performance Viper spec is good for 750Lb/ft.
Old May 22, 2009 | 10:50 AM
  #18  
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ok i was misinformed i guess, i was pretty darn close tho! lol
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