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1987-1991 Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 11-29-2009, 08:24 PM   #1
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Default Better gear ratio'*

My 92 regal is pretty good on power, My 1990 Eighty Eight on the other hand is a little limp wristed . I'd like to replace my 88 tranny with a 3.06 ratio. Both Car are in the same mech cond but Regal lokks horrible. The regal is ser 1 motor. Swapping tranny'* may be a chore , am i right. Should I get another tranny ? Are my 92 heads interchangeable to the 90. I was thinking of re-doing heads then swapping them on to the 90 to keep the 90 running. Don't want to go crazy.
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Old 11-29-2009, 08:42 PM   #2
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Looked up specs on both engs. Regal 170hp 225 ft/lbs 9.0:1
88 165hp 220 ft/lbs 8.55:1

Regal has 109k runs like new, 88 has 96k runs new. Still looking for gear ratio on Regal since the tire cover is no help.
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Old 11-30-2009, 09:03 AM   #3
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You should be able to find out via the tag on the diff end of the casing. The coding there can get you back to gear ratio.
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Old 11-30-2009, 12:08 PM   #4
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Stupid people never look there first. They ask ques first then go look. So, now I'll go look ! Thanks for the reply and you know I'm referring to me right. It'* better when folks laugh with you rather than at you.
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Old 11-30-2009, 12:19 PM   #5
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O.K. tag is no good unless rust is code for 3.06. LOL Does a vin decoder give info on gearing ?
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Old 11-30-2009, 01:59 PM   #6
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Darn....

Here'* the rub. If you had the window sticker or a printout of the options. You could tell easily.

You say the tire cover isn't any help. I assumed you didn't have it or it was destroyed where the sticker is located. Yet..on the 97+ Regals, the sticker is on the truck lid. No sticker, right?

Vin wise .. dealers can sometimes do a lookup. Yet they are limited to 10 years. However...and this might be the saving part. My local dealer looked up the last 6-8 of my over 10 year old vin and in looking for the parts associated to it, the RPO listing was available. He was able to print it out. Yet w/o looking up a specific part...it wouldn't show the info on the car.
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Old 11-30-2009, 03:13 PM   #7
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There is an online vin decoder i have used for my Jeep. Don't know if I saved it after the crash of 2008. I'll try and find it again. The Regal had a broken pwr ant when i got it and the tire cover is/was pressed cardboard type. My Royale is the hard plastic type and perfect. I stuck an old ant in place of the old ant. No leaks now and good reception.
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Old 11-30-2009, 07:06 PM   #8
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Tried the decoder. They go as far as telling you MSRP and top speed. Any other info and you have to pay Car Fax. What i did find is that the 92 Regal can be 4t60 or 4t60 E. Dont know which , they came with either.
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Old 04-03-2011, 01:04 AM   #9
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Whats involved in a gear swap. is it gears and chain ? My gears are 2.84 and want 3.06.
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Old 04-03-2011, 08:06 AM   #10
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Gears and chain. Plus changes to the tune to get the shift points correct.
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2.84, 3.06, 3.8. l67, 3800, bonneville, bonnie, gear, ponitiac, ratio, replace, se, sle, sse, ssei, swap, tranny, transmission

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