C4 upgrade to AOD

keiken01

New Member
May 3, 2011
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I have been thinking about upgrading my '68 C4 tranny to a newer AOD to get better fuel economy. I would need to do this on a very low budget but have no idea where to start. I'm not a mechanic but I'm a decent handyman. Is this a job anyone can tackle?
 
yah, it can be done.... don't be afraid. You will need to modify or buy a new trans mount, and the drive shaft length may change as well. The most important thing...... TV ADJUSTMENT!!!! this is the throttle valve line pressure arm that sticks out of the side of the trans. (Lokar makes a nice set-up... although pricey its good stuff). There have been many many many posts about this on this and other forums... do a search. Bottom line, go for it, you will be glad you did. I love mine!
 
many stock parts fit

my 71 250 aod swap went easy. came from 86 cougar 5.0, I got a tci constant psi valvebody,summit, $240.00 to prevent meltdown if
tv adjustment goes out. i wanted firm shifts and no skip shifts. nice 4-3 downshift getting off freeway. I bent my stock shifter rod to fit, cut my trans crossmember around the pan area, used donor car tv cable with angle steel bracket on my throttle bracket, cut my c4 front yoke [recess area] about 1".
rolled bead on oil lines and slipped hose connectors on. i had to buy a 6cyl aod flex plate $30.00, you'll need to check balancing

went easy