Like to swap 5-spd OD for 4-spd
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New User
Joined: Feb 2004
Posts: 2
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From: rural
Like to swap 5-spd OD for 4-spd
Not sure which catagory this fits but need some info...
have a 1988 F-150, 300 straight six w/ 5-spd OD Toyo, Kogyo & 3.08 rear. Trans is shot (mn cluster blown) and difficult to find a reasonable low mileage, decent warrenty replacement w/o trading first born (I suggested it to him and the ungrateful lil' cuss refuses to go!!). A friend suggested I find a similar year, make model truck with a 4-spd and get the rear punkin' also. Another "friend" suggested it might be an option to exchange the rear end for a higher ratio like out of an automatic truck and go w/ a 4-spd. Questions are:
1) is it possible ...
2) is it practicle ...
3) what yr / model would be best suited for decent mileage and
moderate pulling ...
If you've done this, been there or whatever PLEASE let me know!
have a 1988 F-150, 300 straight six w/ 5-spd OD Toyo, Kogyo & 3.08 rear. Trans is shot (mn cluster blown) and difficult to find a reasonable low mileage, decent warrenty replacement w/o trading first born (I suggested it to him and the ungrateful lil' cuss refuses to go!!). A friend suggested I find a similar year, make model truck with a 4-spd and get the rear punkin' also. Another "friend" suggested it might be an option to exchange the rear end for a higher ratio like out of an automatic truck and go w/ a 4-spd. Questions are:
1) is it possible ...
2) is it practicle ...
3) what yr / model would be best suited for decent mileage and
moderate pulling ...
If you've done this, been there or whatever PLEASE let me know!
Senior User
Joined: Jul 2001
Posts: 465
Likes: 1
From: Tower MN, Houghton MI
getting rid of the mazda M5OD-R2 you have in there now will be the best thing you ever do.
A ZF 5 speed would be a great upgrade, while keeping your overdrive.
However, putting a T-18 from a similiar year F-150 would also work great, it will give you a nice low first gear for towing, and with your stock 3.08 gears your cruise rpms will be fine.
A ZF 5 speed would be a great upgrade, while keeping your overdrive.
However, putting a T-18 from a similiar year F-150 would also work great, it will give you a nice low first gear for towing, and with your stock 3.08 gears your cruise rpms will be fine.
Senior User
Joined: Nov 2003
Posts: 348
Likes: 0
From: Indiana
I see rebuilt M5OD's (what you have) being sold for $600 - $700 (exchange) with a six month guarntee, and ZF's for a lot more. How many miles were on the trans?
At a minimum you will have to get a bellhousing and probably a driveshaft with anything other than a ZF or M5OD (and probably a master cylinder also).
At a minimum you will have to get a bellhousing and probably a driveshaft with anything other than a ZF or M5OD (and probably a master cylinder also).
