Topic: Transmission help...

[yotacorps81]

I just picked up an 80 Toyota longbed 4x4 It has a 20R (verified by the numbers on the motor) and to my surprise and pleasure, it has a 5 speed... But to the best of my knowledge, the L43 (a 4-speed) is the only tranny offered with the 20R. How can I tell what tranny I have?

[Cheesemaker]

Get under there and look at it.  Some of the features to look for is it a top shift tcase, or forward shift?  Does the tranny shifter base have 4 bolts or 6 bolts holding it down?   Compare it to these pictures for reference.  http://www.marlincrawler.com/transmission/rebuilt-complete   And if you can't get it ID'd, then get some clear and sharp pictures and the guys can help you ID it. 

[yotacorps81 [OP]]

So after a few hours of research and picture comparison, I have discovered that it has either a G52 or G54 Transmission... Without takin it off to look at the input bearings, how can I tell them apart? Are they good transmissions?

[Cheesemaker]

They work good, but it just depends on what your plans are for it.  W56 would be alot stronger, but the R151F is the best behind a 4 cyl.