Flexplate troubles

[mikey4her]

I am upgrading my 83'CJ7 from a AMC 258 i6 / 4.2l with a TF999 Transmission to an amc 360 with the tf999 auto trans. I am really clownfused. I thought that the 258 flexplate and the 360 were different but when I went to O'Reilly auto parts to order the new flexplate the part # for the 258 flexplate that matches 999 tranny is the same as the part # for the 360 flexplate that matche the999 tranny. Why? and if the tourq converter act as the flywheel then will I be ok if I use the converter that was on the 258 with the 360. Also some info says the flexplate is balanced neutral. that would explane most but raises the questions about the tourq conv. I saved the tourq convert from the 86' grand cherokee that donated the 360 but I can't find the flexplate that was on the 360. Do you think I should use the convert from the 258 combo or the 360 combo and will I need to order the new flexplate or just use the 258 flexplate. Thanks for any advice...

Read more: http://www.jeep-cj.com/forums/f2/ugrade-360-a-8701/#ixzz1INHefQAo

 

[priceg]

I highly recommend updating to a Dayco torque converter. I have replaced more than one Mopar converter because of a broken snout. Good luck with your repair.