Question about 1989 GMC Sierra

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1989 gmc 2wd with 5.7 what tranny will fit

I need to find a tranny that will fit this truck and dont want to put the 700r4 back in it would like to go back with an auto but not the r4. please help.

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I undertand what you are saying about the 700r4-but- you must also remember that the computer is set up for the 700r4 and that the flywheel is also a pain to find that will match between the mtr and trans BTDT but going the other way around. If you WANT to get rid of it you can, but at a very high price. I like the th400 and will fit, but you will have to get the mtr back down to a carb mtr instead of the FI so you can remove the computer. Depending on laws in your state, this may or maynot be allowed.

Posted on Sep 10, 2009

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