OD trans

plumkrazee70 said

Here's your fix. The Ultimate Mopar A-833 4-Speed Fix: Get Overdrive & Strength!

This solves the gear spread issue and gets you OD in ANY case. Passon sells bearing retainer reducers or the other way around. I'm currently in process of doing this myself.

Click to expand...

This has always seemed like the better way to go! Would love to see a story with before and after 1/4 mile times comparing stock non OD box to the Passon Overdrive. Even better would be a 3 way comparison using the '75- Chrysler OD box too. And while you're at it give us some highway fuel economy numbers as well.
If anyone has any of this info, please share it. The rules would have to include no changes to tire size, or final drive gear.