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Drivetrain Tech General discussion of drivetrain for the Ford Ranger.

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Old 08-18-2016
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Trans question

I have a 1984 ranger 4x2 with a 2.8L engine paired with a tk5 transmission. Transmission went bad so I was wondering if there are any other 5 speed that I could swap to with little to no modification?
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Old 08-19-2016
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The 2.8l, 2.9l and 4.0l engines all have the same bellhousing bolt pattern.

The M5OD-R1 transmission was used from 1988 to 2012 in Rangers, it is a good manual trans.
M5OD-R1 doesn't use Gear Oil, it uses ATF, yes, automatic transmission fluid, Ford Mercon, now called Mercon V ATF

The M5OD-R1 does NOT have a detachable bellhousing, like your current transmission, so you will need to get an M5OD-R1 that came from a 2.9l or 4.0l engine, and also from a 2 wheel drive.

The 2.9l M5OD is best to match 2.8l gear ratios, but 4.0l is OK
Shifter is in a different spot(couple of inches only) so you can either cut the floor plate a bit or pull the carpet back and install M5OD floor plate

In any case you will want to use a 4.0l flywheel(bolts right to 2.8l crank) and 4.0l clutch setup, not the 2.8l stuff.
And use a 1992 slave for 4.0l, that should have the same hose fitting as 2.8l Master hose.
The 4.0l flywheel and clutch setup is heavier duty than 2.8l or 2.9l, and fits 2.8l and 2.9l.
And you will need manual trans 4.0l starter motor

Last edited by RonD; 08-19-2016 at 10:52 AM.
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Old 08-19-2016
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Will i have to change driveshafts?
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Old 08-19-2016
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I want to say yes but do not know for sure.

You may just need to change the front u-joint so it matches M5OD splines, length should be fairly close I would think
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