overdrive swap
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Freshman User
Joined: Aug 2005
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overdrive swap
I have 1967 F100 4x2 with a 300 I-6 & NP435 transmission. I want to put an overdrive transmission in it. What manual overdrive trans will fit in its place with little to no modification?
Last edited by tex4431; Oct 16, 2016 at 12:41 PM. Reason: forgot to put the engine size
Cargo Master
Joined: Feb 2006
Posts: 3,008
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From: North Pole, Alaska
Also 2wd/4wd? A OD will not be cheap. Do you use your 67 as a truck or more like a car? Want a low first geared trans or a car trans like a TKO with a high first gear? For an FE engine, there are several options like a NV-4500, A Bendtsen's adapter to mate a SBF trans to an FE, and a Gear Vendors OD. If a 240/300, then these use a Small Block Ford bell housing which you can use any SBF trans like the M-5OD and the ZF-5.
Laughing Gas
Joined: Oct 2013
Posts: 947
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From: Manitoba, Canada
Postmaster
Joined: Jul 2009
Posts: 4,094
Likes: 5
From: Central Illinois
If you go with the M5R2 look for one that is a '91 or older. '92 and newer are not drilled for the cable driven speedometer our trucks use.
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Cross-Country
Joined: Aug 2013
Posts: 76
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Tremec T-170/"TOD"/RTS is a direct replacement 4 speed OD trans. Mid 80's models. Move the shifter hole back about an inch. Uses a C4 type slip yoke. 2-3 gear spacing is very long, but liveable with enough torque.
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