Rear End Swap 7-1/4" to 8-1/4"

Got underneath the car this evening and swapped out the speedo gear, while no 36yr old mopar is ever finished at least this rear end swap is completed. Notice how much larger the red 36 tooth gear is compared to the black 29 tooth one for the 2:76 rear. Gives you an idea of the tremendous difference in gear reduction there is compared to the 3:55's it has now.

Note how there are a range of numbers listed on each quadrant of the speedo adapter, just line up the quadrant line on the adapter that matches your gear with the dot on the trans. I believe the worm gear on the tailshaft works with all possible speedo gear combinations. Boy this was easy. On my early GM stuff this would have required pulling the tailshaft housing and swapping out the worm gear on a gear spread this large.

speedo comparo.jpg

speedoadapter.jpg

speedoinstall.jpg