GM 4l65E transmission to Toyota transfercase
#1
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GM 4l65E transmission to Toyota transfercase
Hey everyone quick question, will this adapter work to link a 4L65E trans to my t-case? I have a 86 pickup 22re auto, I believe the Existing trans is a A340H cant find much info on how To identified the transfer case that I have
#3
Registered User
It is just about a certainty that this adaptor is to mate a Toyota RF1-A case to GM 4L60E.
The T'case on your auto tranny is specific to it , far as I know.
I might be wrong, but I very seriously doubt that any adaptors exist to mate Toyota cases from Toyota automatic trannys to anything else. People just don't use those.
The T'case on your auto tranny is specific to it , far as I know.
I might be wrong, but I very seriously doubt that any adaptors exist to mate Toyota cases from Toyota automatic trannys to anything else. People just don't use those.
Last edited by millball; 04-16-2019 at 11:59 AM.
#4
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Thread Starter
It is just about a certainty that this adaptor is to mate a Toyota RF1-A case to GM 4L60E.
The T'case on your auto tranny is specific to it , far as I know.
I might be wrong, but I very seriously doubt that any adaptors exist to mate Toyota cases from Toyota automatic trannys to anything else. People just don't use those.
The T'case on your auto tranny is specific to it , far as I know.
I might be wrong, but I very seriously doubt that any adaptors exist to mate Toyota cases from Toyota automatic trannys to anything else. People just don't use those.
#6
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Thread Starter
Alright so before I buy this T-case I need to be 100% sure it's an RF1-A so I'm asking you expert's, I know it says it is but things on the internet can be "miss marked" sometimes... thanks for the help
#7
Registered User
That looks like an RF1-A case, but it is a Forward shift case. You need a top shift case.
Shift rails and stuff can be got to change a forward shift case to a top shift case, but it's easer to just find a top shift case.
Shift rails and stuff can be got to change a forward shift case to a top shift case, but it's easer to just find a top shift case.
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#8
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Thread Starter
good to know! I appreciate the help, whats the difficulty level to convert this to the top shift? I cant find one online and would like to get my build going
#9
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The case has to be mostly disassembled to change the shift rails.
I think Low Range Offroad sells conversion kits, there are likely others who do.
Not too big a deal if you were gonna put some 4.7 crawler gears too.
I think Low Range Offroad sells conversion kits, there are likely others who do.
Not too big a deal if you were gonna put some 4.7 crawler gears too.
#11
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Given that the RF1A was originally designed to operate behind the 120hp 22-re, I would say probably not in it's stock configuration. It's a strong case, but 3x the power is a lot of added stress. For sure you'll want to upgrade the input shaft from 21 spline to 23 spline. Marlin Crawler can help you with that. There are other parts you can get from them to strengthen things as well. Of course, at that point you've moved the problem to the differentials and axles, which also were never designed for that kind of power.
It will also depend on your tire size and driving style.
It will also depend on your tire size and driving style.
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