dodgethis91cmns

ok ive been weighing my options for some things for my truck now that its summer and im workin. ive thought about a getrag but its to much work to swap my 727 for one, and they are $$$$. so ive thought about an overdrive unit now. whats the deal with them, i know how they work, (like an extra year, adn they lower RPM's). can i put one on my 727? do they make them for the 727? are the spline counts the same if iget one from a 4 speed with overdrive? where can i get them? do any of u fella know somebody whos got one? so many questions so little answers HELPPPPP!!!!!!!!1

sdstriper

Gear Vendors, US Gear, Mitchell Gear Splitter to name a few. Doug Nash originally built the US Gear Dual Range IIRC, so there is a Nash Auxiliary transmission out there too. There are a few others but they may not live up to the torque of the 6BT Cummins.

rbrettctd

They make them, but be prepared for a $2000+ job. Im going the Getrag route, $600 transmission/clutch/crossmember/driveshafts, $300 slave/master cylinder kit with prebled lines, and I went ahead and got a Southbend clutch. $1400 total, gonna be a fairly simple swap when I get the time. Move my wiring, since its all in the slave cylinder hole, pull my brake pedal and slide the clutch/brake pedal on there, cut a hole in the floor, and stick the getrag in there like it was born there. Okay maybe a little harder than that, but consider a gear vendors new is either 2200 or 2600, I cant remember, +$600 for driveshafts/mounting kit from them.

Ace

I've been running a GV for about six months now and love it.

PapeCAT

727 to getrag swap is actually cheaper than a GV! just more hunting for parts and sweat involved!

Ace

Yeah, but you still only have a .77 final drive ratio.

rbrettctd

But like Im gonna do, keep the 3.07s out back, atleast for a while, youve got a truck capable of WELL over 100, not that youd want to in one of these...

flashgordon

I'm running the Gear Vendor Over Drive unit, and love it!

here is a link to GV http://www.gearvendors.com/ddrive.html

and here is the link where i just go thru blabbering about it.


https://www.dieseltruckresource.com/...62#post1559862


Flash.