Author Topic: 68 coupe w/auto wanna convert to a newer 5spd  (Read 12052 times)

matt23

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68 coupe w/auto wanna convert to a newer 5spd
« on: August 18, 2005, 10:14:56 AM »
How you doing everyone I have a new ? um... I have a 68 coupe and its automatic and would like to convert to newer more modern 5 spd what kinda combination would be good tranny, rear, etc also how would I go about finding a Clutch pedal assbely I hear they are hard to get does anyone know were to find one if that is true about them being hard to find. sorry I havent been able to put out any tip to others this is my first mustang. THANK YOU

racedraper

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Re: 68 coupe w/auto wanna convert to a newer 5spd
« Reply #1 on: August 18, 2005, 10:21:39 PM »
you should be able to find a good late 80's ealry 90's pretty good as for price cant help you there. As for rear end I would go with a 3:55 gear ratio this willstill give you bottom end but will be great for the highway, if you put a 4:11 in it you will run 5500 rpms at 55 mph give or take a couple rpms and with  a 5 speed it will only lower your rpms about a grand , talking about a gas guzzler but with 4:11's it will run great stop light to stop light. For clutch pedal I would look at jegs cataloge and put in a after market in. a stock oem will be costly , my buddy found that out , he paid 400 for his 69 mach 1 and had to sand blast the rust off.

matt23

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Re: 68 coupe w/auto wanna convert to a newer 5spd
« Reply #2 on: August 19, 2005, 03:28:20 AM »
Hey buddie
um.... thanks for the response. where do you think a 3:73 would put me. I had a 70 cutlass w/a turbo 350 trans and a 3:73 and it used to screem but thats only with a 3spd you know I really like the light to light it had but i dont know if with a 5 spd i would still have the bottom end like that you know I'll check out jegs thanks

sharpshot

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Re: 68 coupe w/auto wanna convert to a newer 5spd
« Reply #3 on: August 21, 2005, 06:00:19 PM »
Hey i am thinking about doing the same thing to my 73 coupe. At summitracing.com i believe they have clutch pedal assemblies. Also would any five speed tranny fit that, or how do you know if it would fit. And where would you find a new rear end, because im sure i would need to redo that too.

Thierry

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Re: 68 coupe w/auto wanna convert to a newer 5spd
« Reply #4 on: August 26, 2005, 02:21:47 PM »
I have found a page showing you the parts you need to make the swap with links to articles on making the swap. This should be usefull for you.
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thyreaper

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Re: 68 coupe w/auto wanna convert to a newer 5spd
« Reply #5 on: December 05, 2009, 05:16:52 AM »
i wouldnt change the rear end (unless yours is bad)... i'd just put 3:73 gears in the rear end that you have and if the driveshaft dont fit check your local salvage yard and get a driveshaft from a car that has newer style tranny in it and take that and your old one up to a machine shop... tell them a measurement and that u want the end off of yours that bolts to the rear end on the newer driveshaft and they will do it... cost is pending on where u live .. get someone thats good at measuring if you arnt to measure the distance the driveshaft  yoke goes up into the tranny and the length of the shaft for a perfect fit once your new tranny is in the car... hope that was any help to you ^^

 

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