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Old 05-21-2007, 10:45 AM   #1
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Default Which transmission

Which transmission would my 97 SE have?

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Old 05-21-2007, 10:50 AM   #2
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I believe you have the 4T60E. But 97 may be a split-year of production. The easy way to tell is to check your RPO label. 4T60'* got the 3.06, 4T65'* got the 3.05 ratio.


FW2 RPO (3.06) you have a 4T60E.
F83 RPO (3.05) you have a 4T65E.

All L67'* have the 4T65E(hd) with 2.93 gears (FR3).
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Old 05-21-2007, 10:54 AM   #3
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More info:

Memory served me well. GMPD does in fact show that 97 was a split year for the L36 in the H bodies. At least the Bonnevilles. The housing part number gives it away. L67'* have the 65E, L36'* have the 60E.

Quote:
Add Supercharger 24211855 20

Add Trans Mfr CD 4T65E/MN7 24211855 20

Add Normally Aspirated 08651937 20

Add Trans Mfr CD 4T60E/M13 08651937 20
Check your RPO codes for the axle ratios I posted above just as a sanity check. Let us know which one you have.
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Old 05-22-2007, 01:13 AM   #4
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Quote:
Originally Posted by willwren
I believe you have the 4T60E. But 97 may be a split-year of production. The easy way to tell is to check your RPO label. 4T60'* got the 3.06, 4T65'* got the 3.05 ratio.


FW2 RPO (3.06) you have a 4T60E.
F83 RPO (3.05) you have a 4T65E.

All L67'* have the 4T65E(hd) with 2.93 gears (FR3).
It'* code F17
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Old 05-22-2007, 02:39 AM   #5
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Your ratio is 2.84 then
Geared for Economy
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Old 05-22-2007, 09:50 AM   #6
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Quote:
Originally Posted by SSEimatt93
Your ratio is 2.84 then
Geared for Economy
Figured as much, would a shift kit help any? Any suggestions? I take it that I have the 4T60E?
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Old 05-22-2007, 09:52 AM   #7
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Looks like it. Now look under your trans at the pan for confirmation. It'll say right on it.

A shift kit would help the FEEL of the shifts and extend the life of your bands and clutches. It won't really do alot for performance, at least not at this point.
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Old 05-22-2007, 11:01 AM   #8
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You should be able to upgrade with an HD dif kit, reprogram the PCM and have a higher gear ratio (3.29) for a reasonable price.
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Old 05-22-2007, 02:10 PM   #9
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I believe the question was would a shift kit help.
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Old 05-22-2007, 06:48 PM   #10
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Quote:
Originally Posted by Zooomer
You should be able to upgrade with an HD dif kit, reprogram the PCM and have a higher gear ratio (3.29) for a reasonable price.
Define reasonable...
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