hey, I HAVE SEARCHED for the last 30 minutes or so trying to find and answer and can't. i am trying to hunt down an ls 5th gear for my b16 trans. i have a guy with two busted ls trannies he will sell me, he SAYS they are from 90-91 models but i need to be sure before i pay. its a decent price for the pair, i am wondering how i can tell for sure they are from a 90 or 91 ls? is there any way other than cracking em open and measuring the gear shaft diameter? thanks in advance. if your gonna flame, wait till my question has been answered plz.

 

the 90-91 had a A1 or S1 trans . the 92-93 had a YS1.
you want the A1 if im not mistaken.. someone correct me if im wrong .

 

90-91 trans are gold label sticker VS 92-93 are white label sticker.

 

I think the A1 and S1 have the same gearing for 90-91.

 

any body else wanna chime in on weather i need a fifth from and a1 or s1? or if either will work? thanks

 

Pretty sure the B16 has a smaller shaft than the B18 trannies

 

I stand corrected by this link....read this link, it answers everything you're asking and more. I literally took less than a minutes on Google and this was the first link that popped up......https://honda-tech.com/forums/transmission-drivetrain-127/ls-5th-gear-b16-transmission-2879988/

 

This was in the faq's.....https://honda-tech.com/forums/honda-crx-ef-civic-1988-1991-3/faq-how-ls-5th-gear-install-guide-jdm-b16-s1-555929/

 

Here's a link that tells you the tranny code and gear ratio's.....might help you in making a hybrid tranny. http://www.ff-squad.com/tech/temp/Bgears.htm

 

ya it literally took me10 seconds to find that link too sept it doesnt answer my question thanks since i am fairly certain they are talking about hydro trannies there.

 

didnt read this thing past the first page, now i did since i presumed there was for sure an answer in it. and there was. thanks for the help. and you dont have to give me the "gosh this took me like 2 minutes to find" cause i am lazy and i admit it. questions answered. 2 blown ls trannies getting in my shed next week. thanks.

 

Well I was just reffering to you saying you searched for thirty minutes and found that odd that's all.

 

i lied. 10 minutes, at most. you caught me.

 

Hahahahaha!

 

Better off with S1 the YS1 is an exact to the ones off of the 94-2000. The fifth gear you are thinking of is off from any high performance of the B-series consider to do an upgrade instead in one of these malfunction B18A transmission.