This is a discussion on transmission upgrades within the 1997 to current 4 speed Automatic (4T65E) (4T65E-HD) forums, part of the Transmissions category; I have a 2001 grand prix se with a factory transmissions and 3.1 liter engine,but I'm upgrading to a 3.8 ...
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| I have a 2001 grand prix se with a factory transmissions and 3.1 liter engine,but I'm upgrading to a 3.8 liter. I was wondering what can i do to the transmission far as performance(clutch plates and anything else)? thanks for the help |
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