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| 4t60 transmission identification (Page 1/1) |
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zaxrx7
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DEC 22, 11:02 PM
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It was not easy but I did find a 4t60 supposedly from a 1992 3.1 Grand Prix. The transmission tag is still intact. I have searched all corners of Google and cannot find any charts related to the tag info as I am trying to verify the final drive. The tag number is 612WWH W3BBB. I do know that the 2 represents the model year and the WWH is what GM calls the Broadcast Code. This code will identify the final drive from what I read. Does anyone have documentation to verify if this Broadcast Code denotes a 3.33 final drive or not?
Thanks in advance.
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theogre
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DEC 23, 01:39 PM
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Tag on the Unit Does Not include "gear ratio(s)."
RPO label on the vehicle has this info.
1 "number" is type of unit. 2nd is Trans Ratio.
TR = Chain Ratio x Final Ratio.
See my Cave, Gear Ratio------------------
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)
The Ogre's Fiero Cave
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Raydar
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DEC 23, 08:56 PM
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OldsFiero
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JAN 06, 04:18 PM
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'99 Dacco catalog says 2WWH = 3880 engine, FL9B converter code, 1895 stall, 3.06 final, 35-35 sprockets. I can't guarantee 100% accuracy, but I don't recall any errors.
I kept the catalog do to this info. Personally, I wouldn't put a Dacco converter in a wheel borrow unless it was to wheel it to the core pile.
Marc
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zaxrx7
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JAN 06, 04:36 PM
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Thanks Marc. Is that final drive gear too tall? I was going to have the trans rebuilt so I can have the gear changed.
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OldsFiero
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JAN 06, 05:08 PM
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To tall for what? What engine? How do you intend to use the car?
Marc
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zaxrx7
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JAN 06, 09:42 PM
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Doing a 3.4 swap at the same time as the trans install. Definitely not a race car. Just cruising around. It's a very nice 88 GT that will just be driven once and awhile.
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OldsFiero
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JAN 07, 06:59 AM
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It should be fine the way it is. That trans has a 2.92:1 first gear ratio. It will be sporty leaving a light and still give you good fuel economy cruising around.
Marc
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zaxrx7
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JAN 07, 08:29 AM
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Thanks Marc. Appreciate the info!
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