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Tremec T56 Vs T56

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Old 03-14-2016, 12:21 PM   #1
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Default Tremec T56 Vs T56

Does anyone know of any differences between a 1999 T56 Trans Am Transmission and a 2004 GTO Tremec T56. I just upgraded to a stage 2 Tremec T56 and thought since they were the same trans that it should bolt up like the original one. Also replaced the clutch with a Monster Stage 3 1200 ho 3 disk clutch. Car runs good but reverse doesn't seem to want to go in without putting the car in 5th 1st and 1st has slight issues sometimes. I bought the trans from a good friend with a fresh build and rode in the his car prior to pulling it out and putting it into mine.
Thanks for any input..
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Old 03-14-2016, 12:58 PM   #2
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Sounds like a slave issue more then a trans issue.
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Old 03-21-2016, 08:12 PM   #3
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Not really advanced engineering but I suppose I'll bite. Biggest question is did you replace the throwout bearing and did you check to see if the throwout bearing needed a shim when you did the clutch replacement. I can almost guarantee that's your issue.
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Old 03-26-2016, 04:44 PM   #4
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Did you by chance bend the pins on the reverse lockout solenoid
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Old 05-09-2016, 07:27 PM   #5
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Shift cup is different, and I thought output shaft used a different spline.

Some bellhousings/starters are different too slightly.
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