NA 3 spd to 4 spd - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
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post #1 of 2 (permalink) Old 10-15-05, 04:40 AM Thread Starter
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MaD_WoG's Avatar
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NA 3 spd to 4 spd

we got a NA fairlane, 89 model, its got a 3 speed auto, and a 2.77 at the moment...

got a smashed NA 90 model, with a 4 speed and a 3.23 diff....

to fit them....

we need the auto, auto x member. and tailshaft and hand brake cable...

the sizes of hte lower arms are different.... how do we get around that? we need to know from someone who has done it as the car can only be off the road for a day... its a work car so yeh...

thanks heaps people....

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post #2 of 2 (permalink) Old 10-16-05, 08:14 AM
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Re: NA 3 spd to 4 spd

This is not a one day Job.
the 4 speed auto runs a computer that links in with the engine computer.
As far as i know there is no way to short change this, without replacing the FULL wiring loom.

the combination you suggest however, is good if the componants are in good order.

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