A500 mopar overdrive ?

Has anyone installed a mopar A500/A518 overdrive in to a short wheel base A100 ? Got any pictures ? How short was your driveshaft ? How did you support the transmission / rear mount ? any input.

Just an idea,..anyone seen this done ?

I have a 69 A100 PU with 360 and 46RE trans, the driveshaft is about 10" long, trans crossmember was fabricated and attaches to the crossmember and supports the bottom of the trans with a GM bushing. The trans is controlled by aftermarket controller that handles the OD and lock up converter

BillWelter wrote:I have a 69 A100 PU with 360 and 46RE trans, the driveshaft is about 10" long, trans crossmember was fabricated and attaches to the crossmember and supports the bottom of the trans with a GM bushing. The trans is controlled by aftermarket controller that handles the OD and lock up converter

Got any pictures of the crossmember and the driveshaft ? What rearend gear are you using ?

I'll post pics in a bit. I went with 3.73 gears in a 489 center section and cone-type sure-grip diff

BillWelter wrote:I'll post pics in a bit. I went with 3.73 gears in a 489 center section and cone-type sure-grip diff

Thanks, I'll be waiting for the pictures ...3.73 that's a GM gear ratio ??

yup I have done it only I used a 46 rh trans same trans just not electronic like the RE trans. i CAN NOT FIGURE OUT HOW TO POST PICTURES. I would show you pictures if i could. Message me and I will get pics ready

tagging this one for trans options

As requested here are pics of my build - 1995 360 and 46RH trans in an A100. A 46RE would also work , but I chose the RH so I could use an aftermarket controller for TC lockup and OD. If no controller, it works just like a Torqueflite.

Don't make fun of my little shaft !!!  Its not the size that counts !!  OK, got that out of the way... Ha!  I just cut out the factory mount from the crossmember, installed the engine and trans, and jacked up the trans rear as far as possible. Then let it down just a bit for crossmember clearance. The pan was level, and the U-joint angles were very close, so I left it as is. I welded two 1/4" plates on front and back of the crossmember, and cut the two engine mount plates from 3/16". Used a generic GM trans mount for a 1990 Camaro. Bent the front and rear plates so they could be bolted to the crossmember and to the plate that the mount sat on. The mount was offset 1.5" rearward of the crossmember, so the brackets were skewed slightly. Once that all fit, I welded in the side and around to the bottom. Finished it all nice and powdercoated it. The top bolts through the crossmember use nylock nuts and are not tightened very tight as this would crush the crossmember. I didn't see the need to weld in tubing there. Then measured and had the driveshaft made. So far no vibration problems, but I cant carry too heavy of a load, that's OK.

https://photos.google.com/photo/AF1QipN8wPfdDa1T6mYsZ2-GC71jg3ee_e7G_XWz2vVp

https://photos.google.com/photo/AF1QipP-tWRxzfr5VO22Mh-97pX5x4VDDgPR6SZP-64M

https://photos.google.com/photo/AF1QipOCYx6vx0-kb1oGPhwHcRNY9aIz_G_FBYegqKa-

thanks for all the information... but I could not view the pictures. Could you possibly email them to me rustytoolss@neo.rr.com thanks, you can't I'll understand. Shawn rustytoolss

Rustytoolss,

I'll email some pictures as well when I get a moment. Mounted my from above so it appears to be floating like the OG 727.

All;

On the A518/46RH/46RE, how hard is it you move the throttle valve? Mine has been very very stiff making it almost impossible to push the pedal down. I had to put a steel brace on my floor because the sheet metal was bending! Does anyone have a fish scale or any kind of way to numericaly test that for me?

My 727 takes 1 lbs. of pressure to move about halfway, and after that about 4-5 lbs til its fully open. Any help would be appreciated. Thanks!

I had the same problem in trying to look at the pics. Could you include me in the email on the pics at wva1975@hotmail.com? Thanks

Those of you that have installed a mopar A500/A518 overdrive into your A100s. Whats your thoughts about the changes..rpm..mileage..performance...do you like it. Any things you don't like / would you do it again ?