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 2Likes
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1
Post By LMH
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1
Post By lnfletcher
06-08-2020, 05:31 AM
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Registered User
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Join Date: Jun 2020
Cobra Make, Engine: 65 FF. 5.0 EFI, 5 speed
Posts: 1
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Not Ranked
I need help with Tranny
Hi all,
I have a FF with a 88 Mustang GT powertrain. (5.0 EFI and 5 speed manual).
I broke 2nd gear yesterday and would like to upgrade the whole tranny. Any suggestions that would bolt up??
TIA
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06-08-2020, 08:50 AM
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CC Member
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Join Date: May 2006
Location: St. Louisville,
Oh
Cobra Make, Engine: A&C 67 427 cobra SB
Posts: 2,444
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Not Ranked
The TKO 600 comes to mind. You do not need that heavy duty with a 5.0 engine. The TKO 500 would do, but I don't know if they can still be purchased new.
Now come the OD ratio. Go with the .82 OD. I have grown to hate the .64 in my Cobra.
You have to get the right spline and input shaft length. Not sure if the drive shaft length will need to be changed.
Last edited by olddog; 06-08-2020 at 08:53 AM..
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06-08-2020, 10:39 AM
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CC Member
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Join Date: Sep 2001
Location: Danville,
CA
Cobra Make, Engine: CSX 6079 482CI CSX cross ram
Posts: 1,354
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Not Ranked
agree the TKO 600 is good for 600 HP/600 ft pounds... You can buy it from modern Drive line. I strongly agree with the .82 (road race version) I did in my CSX.
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06-08-2020, 06:01 PM
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Senior Club Cobra Member
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Join Date: May 2001
Location: Florence,
AL
Cobra Make, Engine: RCR GT 40 & 1966 Fairlane 390 5 speed
Posts: 4,511
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Not Ranked
TKO 500 should be a drop in for his 5.0 / T-5. His 5.0 is probably not making 500 foot pounds of torque. But I like the 2.97 first gear in the 600 vs 3.27 in the 500.
And I love the .64 O.D. But you have to have a cam with low end torque. More of a street motor than race motor.
We have swapped out .84 for .68 after a month or so of driving. But each to his own.
__________________
''Life's tough.....it's even tougher if you're stupid.'' ~ John Wayne
"Happiness Is A Belt-Fed Weapon"
life's goal should be; "to be smarter than inanimate objects"
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06-08-2020, 07:53 PM
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CC Member
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Join Date: Apr 2005
Location: Tucson,
AZ
Cobra Make, Engine:
Posts: 5,390
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Not Ranked
Do you currently have a T-5? Rebuild/modify it as you'll never have a better shifting transmission in there!
Larry
__________________
Alba gu brąth
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06-09-2020, 09:30 AM
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CC Member
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Join Date: Jun 2020
Location: Miami,
FL
Cobra Make, Engine: 351 Windsor
Posts: 80
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Not Ranked
Is he Pre op or Post op ?
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06-09-2020, 10:33 AM
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CC Member
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Join Date: Apr 1999
Location: cleveland,
OH
Cobra Make, Engine: CSX4000, 427
Posts: 1,999
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Not Ranked
I like keeping things simple. Assuming you have a T5.
If you're planning on keeping the car, there are severeal tranny companies that beef up the T5, making it stronger, and that is what I would do. It may even be stronger than a TKO500 ?
If you are planning on getting rid of the car, I'd just swap in another stock T5
__________________
"After jumping into an early lead, Miles pitted for no reason. He let the entire field go by before re-entering the race. The crowd was jumping up and down as he stunned the Chevrolet drivers by easily passing the entire field to finish second behind MacDonald's other team Cobra. The Corvette people were completely demoralized."
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06-09-2020, 12:57 PM
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CC Member
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Join Date: Feb 2007
Location: Colorado Springs,
CO
Cobra Make, Engine: Backdraft, supercharged Coyote
Posts: 2,433
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Not Ranked
Quote:
Originally Posted by LMH
Do you currently have a T-5? Rebuild/modify it as you'll never have a better shifting transmission in there!
Larry
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I agree with this. The TKO is nice if you're racing, or have a lot of power. Doesn't sound like either applies to you. The TKO usually requires some different parts to install, it's bigger, and heavier. Shifting is a bit notchy.
Your 5.0 in a 2,000 pound car isn't putting out enough power to lunch a stock transmission. Yours broke because it's 35 years old! That's like 112 in human years. 
Buy a rebuild kit and a new cluster and rebuild what you have. You'll end up with something better than original for 1/3 the price. If you don't want to rebuild it yourself, call Mike Forte and order a new WC T-5 and drop it in. If you want something special, call Gordon Levy and order one of his.
Personally, I would call Gordon for my next manual trans.
__________________
.boB "Iron Man"
NASA Rocky Mountain TTU #42
www.RacingtheExocet.com
BDR #1642 - Supercharged Coyote, 6 speed Auto
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06-09-2020, 01:02 PM
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CC Member
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Join Date: Jan 2009
Location: Las Vegas,
NV
Cobra Make, Engine: Shelby CSX4005LA, Roush 427IR
Posts: 5,461
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Not Ranked
At first I thought this was about something entirely different.
Does anyone do rebuilds take a core credit? In the interest of minimizing downtime it might be best just to get a rebuilt and return your core for credit. After all, there is no "numbers matching" to preserve here.
__________________
Cheers,
Tony
CSX4005LA
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06-09-2020, 07:29 PM
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CC Member
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Join Date: Sep 2018
Location: Howell,
NJ
Cobra Make, Engine: Backdraft Car #1209 Roush 427R
Posts: 605
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Not Ranked
Rebuild.....
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06-10-2020, 07:05 AM
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CC Member
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Join Date: May 2015
Posts: 618
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Not Ranked
What I was thinking
Quote:
Originally Posted by HUBBELL RACING
Is he Pre op or Post op ?
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LOL Means a WHOLE other thing here in Commiefornia...
__________________
Superformance 1764
Ford Racing 427 SB
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06-10-2020, 08:39 AM
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CC Member
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Join Date: Feb 2006
Location: Alexander,
AR
Cobra Make, Engine: B&B 427 Stroked Windsor TKO 600 w/3.50 posi 9"
Posts: 789
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Not Ranked
I agree with Dwight, I love my .64 with 3.50 gears but I do have torque. Gives me great cruising on the interstate 2100 at a little over 70.
I never use 5th for any other roads but the interstate.
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