The Stovebolt Site Forums The Shop Area Driveline Saginaw 3-speed Overdrive Question

I think that I may have possible information about why my transmission springs/pops out of reverse when the OD is not locked out. The photo below of the reverse shift lever that has a notch in it is of the side cover that came on my OD transmission. That cover looks like the cover that was on the straight drive version that I have had on my truck for many years. I did not notice a difference in the spring that holds tension on the shift forks for either side cover. The photo below of the reverse shift lever that has a pad to operate the lock out rod is on the side cover of my friend's OD transmission. In these photos it looks to me like the spring that holds tension on the two shift forks in the OD version is much heaver than the spring that is on the straight drive version. If true, then that heavier spring must provide enough tension to allow the reverse position to hold the OD lock out rod in place.

My friend and his transmission are in a different state (Texas), so I cannot make a side by side comparison.

Does anyone have information on this spring concerning a possible difference between the straight drive and the overdrive versions?

Thanks!