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Old 10-22-2008, 08:11 PM   #1 (permalink)
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transmission swap 4 speed to 5 speed

i have a 1980 toy 4x4 reg cab with a side shift 4 speed and i am going to put in a 5 speed trans ...question will i need to have my drivelines refitted .
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Old 10-22-2008, 08:13 PM   #2 (permalink)
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Quote:
Originally Posted by gassman4x4 View Post
i have a 1980 toy 4x4 reg cab with a side shift 4 speed and i am going to put in a 5 speed trans ...question will i need to have my drivelines refitted .
Depends what model 5-speed you're using. I'd refer you to Marlin's transmission pages but that site is down right now.

If you're using an L-series 5-speed from a 1st gen pickup you should be fine. If you're getting a G or W from a later model those trans are longer.
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Old 10-22-2008, 08:18 PM   #3 (permalink)
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Yes and no, depends on the type of 5 speed but a little research in the FAQ could have told you that.
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Old 10-22-2008, 08:19 PM   #4 (permalink)
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Pickup and 4Runner Transmissions with 1st gear ratios.
L43 4 speed 79 - 80 3.67
L45 4 speed 81 - 82 3.93
L50 5 speed 81 - 82 3.93
L52 5 speed 83 3.93
G52 & G54 5 speed 84 - 88 (Carb) 3.93
W56 5 speed 85 - 95 (EFI) 3.95 Manual Hub Equipped Vehicles 89 and up Have W56, 89 and up ADD vehicles have G58.
R151F 5 speed 86 - 87 (turbo only) 4.31
G58 5 speed 89 - 95 3.93 ADD Equipped Vehicles
R150F (6 cyl) 5 speed 88+ 3.83

Identification:
G52/54 84-88' are twin stick, use a 8 bolt center section, 6 bolt gear t/case pattern, 21 spline output.
G58 89-95' twin stick, 8 bolt center, 9 bolt chain t/case, 26 spline
W56 85-88' (single stick), 89-95' (twin stick), 10 bolt center, 6 bolt t/case, 21 spline
R151F 86 - 87 (turbo only) will have two housings of four bolts each just like a G52, the difference would be the large rubber plug on the bottom of the bellhousing.

Info provided by Marlin Cralwer
All 84 to 95 22R trans are 25.5" long including the bellhousing. The only shorter trans is the 79-83 year trans which are 20.75" long with bellhousing. These early short trans have had a poor service record due in part to their small bearings and lighter gears. The 82-83 L52 5 speed which had a 80 x 20 mm front input bearing has had the best service record. A number of years ago, I invented a way to install a oversize 80 x 23 mm input bearing with an inproved gear set which features a greater helix angle for added strenght. I call it my L52HD and is the strongest 20.75" long trans.

Side note:
ADD = Automatic Differential Disconnect
For more information see my article here:
http://www.off-road.com/toyota/tech/add/index.htm

Tranny 1st 2nd 3rd 4th 5th Rev
R151f 4.310 2.740 1.930 1.000 0.830 4.230
W56 3.954 2.141 1.384 1.000 0.850 4.091
G52 3.929 2.333 1.452 1.000 .851 ????
FYI: Marlin offers a R151f gear swap that gives 5.15 first

List of Toyota transmissions which covers all toy trans 2wd, fwd, automatic, car, truck
http://en.wikipedia.org/wiki/Toyota_transmissions
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Old 10-22-2008, 08:56 PM   #5 (permalink)
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thanks for the info gents the 5 speed is out of a 85 4 runner i just wanted to know because if i had to adjust my drivelines then i will just go ahead and .install my duel case set up now
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Old 10-22-2008, 09:24 PM   #6 (permalink)
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Then why dont you just go ahead and do it?? Seems like a no brainer unles youve got suspension changes coming soon.....
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