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Old 04-03-2011, 01:11 AM   #1
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Default Whats involved in gear swap

I'd like to get a better gear ratio. Stock is 2.84 and Lesabre T-Type came with 2.97. The Bonne SSE has 3.06 which is the ratio i want. What parts do i need to get. Gears and chain ? Thats aside from gaskets and is there a shift kit available . 1990 Olds 88.
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Old 04-03-2011, 01:23 AM   #2
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The simplest way is just to swap the entire transmission and reprogram the computer. A junkyard transmission may be cheaper than a rebuild kit and whatever parts are needed. It'* up to you, though.
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Old 04-03-2011, 08:00 AM   #3
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It'* a lot of work changing gears and chain. Drop sub frame, remove transmission, remove side pan, remove valve body assembly, remove gears and chain, then put it all back.
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Old 04-04-2011, 11:52 PM   #4
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Was'nt planning on dropping but was going to change the sub frame mounts and 92-95 frt brakes. I have a new F 41 rack and 32mm sway bar. If i drop it it can all be done at the same time off the car. So what gears and chain do i need. Unless i drop it out and lift in a Caddy 4.1 or 4.5 or series 2 or 3.
But i dont want an SC motor or Caddy running hi-octane. My GS Regal is enough.
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Old 04-07-2011, 11:44 PM   #5
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I still have my old Regal at home . Runs fantastic but lots and lots of rust. It'* a 92 (L27) and way quicker than my Olds. Finally found info that it . It has a 3.06 final drive. I still have only because i was waiting for better weather to pull the heads and do a home porting job on them.
Question is will the tranny fit the H body. I've others talk about it but need to know for sure.
The Vin came up as ME9 TRANSMISSION,AUTOMATIC 4-SPEED(THM440-T4/4T60) 4-SPD A/TRANS(ME9)
FW2 TRANSAXLE,FINAL DRIVE,3.06 RATIO(USED WITH GRAN TOURING PKG Y56) 3.06R(FW2


Also the upper intake won't swap due to the TB right ?
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Old 08-26-2011, 09:07 AM   #6
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Took everyones advise and changed the trans. Did not reprogram the computer. Went right in w/o any problems. Did the entire front end except the eng cradle mounts since i coud'nt find new ones and mine were good and no rust. . Runs great now and freeway ramps are more exciting. The front end makes it feel like a new car again.
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Old 08-26-2011, 10:13 AM   #7
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Good to hear it went smooth. however, how are your shift points? Not having it retuned is going to cause some conflicts.
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Old 08-26-2011, 11:27 AM   #8
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In his year there won't be any real programming issues like our fully electronic setup. (97+)

And actually for a gear swap, the info provided was incorrect. A gear swap in an NA trans of that year is swapping the differential. However GM changed th pitch, tooth count etc etc a bunch of times in the 4T40/4T60 and therefore each year should be matched up and confirmed 10 different ways.
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Old 08-26-2011, 03:16 PM   #9
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Shift points are were they should be. Shifts just like it did in the Regal being it'* not elec controlled. Everything run just as it should. Essentilly the eng in both crs are the same LN3/L27 and both had the same trans but different gearing.
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