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03-04-2005, 11:04 AM
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CC Member
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Join Date: Sep 2003
Location: Dallas, Texas,
Posts: 46
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Not Ranked
5 SPd Transmission for FE
I have a 68 Shelby Convert with a 550 HP / 600 Ft Lb Torque 427 (454). Gears are 3.50's. Currently Toploader close ratio 4 spd. Considering a 5 spd. Can anyone suggest which to go with given this HP / Torque rating. How much will it cost? How much time to change over? Will be used on a track / possibly Big Bend Open Road Race. Rpms at 100 mph are approx 5000.
Thanks!
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03-04-2005, 11:06 AM
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CC Member
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Join Date: Nov 1999
Location: St. Paul,
Mn
Cobra Make, Engine: CSX 2189
Posts: 319
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Not Ranked
I am not sure that a Tremac will fit in a Mustang without some serious alterations.
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03-04-2005, 01:16 PM
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CC Member
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Join Date: Jul 2001
Location: Senoia,
Ga.
Cobra Make, Engine: 427SO with big twin autolite inlines on custom intake, jag rear, top loader, wembeldon white, guardsmen blue stripes
Posts: 3,155
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Not Ranked
...More economical to install 'wide' ratio gears and better.......
__________________
Perry
Remember!, there's a huge difference between a 'parts' changer, and a mechanic.
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03-04-2005, 01:19 PM
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CC Member
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Join Date: Jul 2001
Location: Senoia,
Ga.
Cobra Make, Engine: 427SO with big twin autolite inlines on custom intake, jag rear, top loader, wembeldon white, guardsmen blue stripes
Posts: 3,155
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Not Ranked
Necessary wide ratio gears cost about $500-$600, got mine from "southern gear' in Atlanta. Driven hard and no failure ye
__________________
Perry
Remember!, there's a huge difference between a 'parts' changer, and a mechanic.
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03-04-2005, 01:59 PM
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CC Member
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Join Date: Oct 2002
Location: Fairfield,
CT
Cobra Make, Engine: HM-2027 / 427 SO
Posts: 815
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Not Ranked
Someone on www.fordfe.com has just went through this. I think it was close to a month ago so try a search. He installed a Tremec 600 into a 67 or 68 mustang. There were some issues but nothing major as I remember. G. |
03-04-2005, 03:00 PM
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CC Member
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Join Date: Dec 2000
Location: Salt Lake City, UT USA,
Posts: 234
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Not Ranked
I am running a Tremec TKO behind my 428, with 3.50 rear end. Runs about 1400 RPM in 5th at about 80 mph. No problems containing the power as of yet...
BigMike
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03-08-2005, 11:34 AM
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CC Member
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Join Date: Jul 2003
Location: Newstead,
NY
Cobra Make, Engine:
Posts: 19
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Not Ranked
A Tremec TKO-600 has the same bolt pattern as a wide case toploader so your all set there. The issue is with the length of the input shaft. The TKO-600's ia 3/4" longer than the toploader. In order to install the Tremec tranny behind an FE you will need a spacer. McCleod makes one for a cost of approx. $150.00. The other option is to remove the input shaft, shorten it and reinstall it. Forte's parts connection does the input shaft shortening modificaiton if you want to go that route. Keeep in mind that in you use the spacer, your drive shaft will need to be shorted. Hope that helps, have a good one.
-SGC
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03-08-2005, 11:38 AM
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CC Member
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Join Date: Jul 2003
Location: Newstead,
NY
Cobra Make, Engine:
Posts: 19
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Not Ranked
Oh, by the way the Tremec torque ratings are as follows:
3550 - 350lb-ft (3.27 1st, .64 OD)
3550 TKO - 450lb-ft (3.27 1st, .68 OD)
3550 TKO II - 500lb-ft (3.27 1st, .83 OD)
TKO-500 - 500lb-ft (3.27 1st, .68 or .83 OD)
TKO-600 - 600lb-ft (2.87 1st, .64 or .83 OD)
These numbers are based on a 3400# car for what its worth.
Thanks.
-SGC
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03-08-2005, 01:02 PM
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CC Member
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Join Date: Jul 2002
Cobra Make, Engine: KMP329 w/KC489 Shelby
Posts: 392
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Not Ranked
Quote:
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In order to install the Tremec tranny behind an FE you will need a spacer.
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Tremec makes a shorten input shaft that you can install. That is what I'm using. |
03-08-2005, 03:12 PM
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CC Member
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Join Date: May 2000
Location: Northern VA,
VA
Cobra Make, Engine: Classic Roadsters
Posts: 2,765
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Not Ranked
what about a G-Force T-5???
__________________
LIFE IS TOO SHORT TO WORRY ABOUT GOOD GAS MILEAGE
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Utinam logica falsa tuam philosophiam totam suffodiant!
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03-08-2005, 04:15 PM
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Club Cobra Member
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Join Date: Dec 2004
Location: Roslyn Heights,
ny
Cobra Make, Engine: CSX4819, 427 all aluminum
Posts: 76
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Not Ranked
tremac
I confirm scg48 numbers..
Conrad
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03-08-2005, 04:43 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
BIG MIKE, YOUR TACH IS OFF.
__________________
''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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03-09-2005, 09:24 AM
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CC Member
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Join Date: Jul 2003
Location: Newstead,
NY
Cobra Make, Engine:
Posts: 19
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Not Ranked
I heard that Tremec was producing a shortened input shaft but had no confirmation until now, thnaks Dreamer. I don'y know the cost, but I would think that the spacer is an easier solution. However, if you are running a solid rear axle, that 3/4" might make the drive shaft too short so your only real option is the shortened input shaft. Now if you have IRS there is no issue with the drive shaft length.
-SGC
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03-09-2005, 11:21 AM
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CC Member
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Join Date: Sep 2003
Location: Dallas, Texas,
Posts: 46
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Not Ranked
SCG48 and others -
Thanks - what other modifications need to be done? 5 speed .com says the tunnel will have to be modified - is this right?
What about shifter location?
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03-09-2005, 01:29 PM
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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
One option would be to switch the rear gears to 3.07, and change to a wide ratio toploader. You won't need a 5 speed then.
__________________
"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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03-09-2005, 02:18 PM
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CC Member
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Join Date: Sep 2003
Location: Dallas, Texas,
Posts: 46
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Not Ranked
Anthony - so go out and get a new set of gears and buy a new transmission? What would that run?
Thanks
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03-09-2005, 08:45 PM
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Subsistance du serpent
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Join Date: May 1999
Location: DFW, Texas,
TX
Cobra Make, Engine:
Posts: 1,120
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Not Ranked
Shelbytexas,
Find a copy of last weekend's Horsepower TV. They did the exact install. You do have cut part of the floor support for the top of the transmission to clear.
__________________
James
A few ERAs, SPFs, Shelbys, Kirkhams...
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03-11-2005, 02:28 PM
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CC Member
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Join Date: Sep 2003
Location: Dallas, Texas,
Posts: 46
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Not Ranked
James - thanks. If you have any idea on how to find a copy, let me know....
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03-11-2005, 02:33 PM
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CC Member
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Join Date: Sep 2003
Location: Dallas, Texas,
Posts: 46
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Not Ranked
James HP TV Web Site show last weekend program to be Chevelle blower Instal and the previous week LS-1 install. This is a great lead and thanks for your help - could it have been another program?
Thanks. Ken
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03-11-2005, 02:43 PM
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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
Yeah,
I'd probably buy a TKO, and cut up the floor boards, tunnel to make it fit. ? shifter, ? driveshaft, ? speedometer modifications, ? anything else
You could have David Kee rebuild the toploader, with wide ratio parts , ? $800-1000, and install new rear gears ? about $400 -500. You wouldn't have to buy a new shifter either, speedometer hook up OK, drive shaft the same, etc.
It's your car.
__________________
"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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