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1G 90-91 early reverse idler gear? Or later 91+?

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Geeb

Proven Member
384
47
Apr 6, 2016
Philadelphia, Pennsylvania
Can anyone tell me if my (chewed up) reverse idler gear is an early 90-91 or later 91+? See pics below..

Im pretty sure I've got a 1990 5/R and I think a 1990 1st gear with 92+2nd,3rd,4th

If that's even possible, can you even combine 1990 1st with 92+ second? I thought they each had their own shafts and had to match up... Or is it just first gear needs to match up with the diff?


Maybe I misunderstood when it was explained to me.... Which is why I'm coming here now LOL. Thanks guys.
 

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There are only two variations really for USDM stuff. 1990-1992, 1993-1999. That is a 90-92 style, you will need another one from a 1G DSM; they are the same part in the F5M33 and W5M33 transmissions.

The later version has a longer reverse idler shaft length as well as a shoulder on the gear itself for the height offset; you can also easily identify this with transmissions assembled by the placement of the reverse idler gear bolt hole on the outside of the transmission; they are spaced about 1/2" differently.
 
Tim saving the day once again

Thanks man that's good news, jacks has one on his site for 25 bucks I'm gonna grab it while it's still there LOL
 
Go for it, because they are about $70 new if they are even around anymore.
 
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