Reverse 203/205 Doubler

Reply Subscribe

Thread Tools

Search this Thread

Feb 9, 2007 | 02:18 AM

drunknmudder77

Thread Starter

Junior User

Joined: Dec 2004

Posts: 57

Likes: 0

From: Subiaco, AR

Reverse 203/205 Doubler

I had the idea the other day at work to take a 203/205 doubler set up & turn around the 203 to make an overdrive. The only real problem I see is if the 203 could handle the power going backwards. The adapters shouldnt be a problem at all since you can get just about anything to bolt up to anything nowadays.

The funny thing is I was only trying to figure out how much lift to do to fit 46s & not be to tall, then got to messing around with axles & gears (2.5 tons w/ 46s = 3000 rpms @ 60 mph).

James

Feb 9, 2007 | 10:42 AM

fishmanndotcom

Lead Driver

Joined: May 2000

Posts: 9,236

Likes: 12

From: Senoia, GA

why are you tryin to reinvent the wheel? you arent adding overdrive, you are still effectively reducing gears. also you'd spend a lot of money towards getting this adapter made since i have never heard anyone doing this. yhes i am sure someone has somewhere, but why get the expensive custom adapter made when you can buy the 203/205 adapter that has been proven and is only gettin cheaper ?!?!?

-cutts-

Feb 9, 2007 | 12:37 PM

chrono4

Post Fiend

Joined: Jan 2004

Posts: 5,377

Likes: 2

From: Elkhart IN

who want to go 60 with 46's?

Feb 9, 2007 | 01:21 PM

75F350

Post Fiend

Joined: Jul 2006

Posts: 6,948

Likes: 44

I can appreciate the concept, but I have to question the practicallity of trying to "overdrive" a big ol truck. If this thing was going to do some major cruising at super highway speeds, and you were looking to get better gas mileage, I might be able to understand, but, you mentioned 46" rubber, and "rockies" that have a 6.72:1 gear ratio. I really don't see this thing buzzing down the freeway with the cruise control on at 70 to 75 mph.
My chart shows 2886 rpm at highway speed with that gear ratio, this seems pretty ideal to me.