Re: Transmission Modifications/replacement

Posted by steve-52/200 On 2015/9/5 9:43:24

Hi ,
Well the Sierra ultramatic to 727 to 518 swap has been a hairy mess
I envy the 700 guys
The 6-12 v module to provide the 1 amp 12 v neg ground off the 6v pos system
to run the 45 ands 55 # pressure switches that lock the torc converter and cut in the overdrive didn't work at all it just got hot
So I bit the bullet and went 12 v neg ground

The x brace chopping to allow the extra trannie length was a lot o chopping
The shaft needs the Chrysler end at the front and the packard end at the back
The scrap guy didn't get the linkage with the trans I found to rebuild, so I went with an American shifter floor shift which looked good but requires an advanced degree in theoretical wave mechanics to assemble and no one in sales has a clue

There's an extremely helpful bunch in Alabama PATC who sell the adaptor kit from 727 to 518 a

The Sierra grove guys are out of biz now

You have to chop a hole in the floor and make a trap door to make a tranny filler and make the center hump taller
I tried it and maiden voyage ; NO SHIFT !,,

So I vote for the other swap the bengston one with the 700 r

The car waited so long to get this all sewn up that the radiator clogged up
so when cleaned it all goes back together I get to try to diagnose the shift deficit on my quest for the effortless freeway cruiser