Derrick Schultz Posted September 8, 2014 Report Share Posted September 8, 2014 i have a 2000 park avenue with a 3.8 series 2 and a 4t65e? trans..i can purchase a trans out of a pontiac montana with a 3.4..will the swap work, gear ratios and everything? please help Quote Link to comment Share on other sites More sharing options...
Andrew Posted September 14, 2014 Report Share Posted September 14, 2014 Nope. Different trans, different platform. Quote Link to comment Share on other sites More sharing options...
95 vert Posted September 16, 2014 Report Share Posted September 16, 2014 Big issue is whether the Montana trans has the Buick rear trans mount bosses. Most don't. Stall speed of the torque converter is different but not enough to cause any real problems. Side cover may need to be switched due to possible mounting differences also Quote Link to comment Share on other sites More sharing options...
Derrick Schultz Posted September 21, 2014 Author Report Share Posted September 21, 2014 i got the transmission before i read these comments but it looks pretty much the same except for the new trans has a neutral safety switch by the shift linkage, and the old one doest, does this mean i just wasted my money or will the swap work Quote Link to comment Share on other sites More sharing options...
95 vert Posted September 22, 2014 Report Share Posted September 22, 2014 I don't know for sure. I imagine it'll take more time and money to make it work than to find a replacement that has the neutral switch internal like your Buick Quote Link to comment Share on other sites More sharing options...
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