overdrive manual transmission options?

[saxart]

https://www.67-72chevytrucks.com/vbo...d.php?t=670789

[BASE]

Originally Posted by s10mk

From what I read, it was used in Chevy trucks from 81-87 in 2 and 4 wheel drive. And yes, it was a true 4 speed with an overdrive. Rpo code my6. But the a833 was originally used by Chrysler in the 60s

Reminds me that I saw one on CL locally here a while back that had me scratching my head. He's calling it a NP440 but mentions RPO MY6 and it apparently is an OD manual out of an '87.

Still there: https://stlouis.craigslist.org/pts/d...398930026.html

I think this must be the same critter as what you are talking about.

[Sheepdip]

Originally Posted by davischevy

This thread is older than one of my jokes, but I'll throw my two cents in.

I recently installed a Gear Vendors Overdrive and love it.

The only way to Fly! Got two, one in a 49 Chevy PU behind a TH350 and one in my Avatar Otis behind a SM465. The ability to split several gears is way better in my book especially when loaded or towing.