transfercase's

mccutcheon4 · Post by **mccutcheon4** » Tue May 02, 2006 1:25 pm

Ok, I am trying to get educated here, what transfer case was OEM behind a C4 ? Damn, I don't know where to begin, Dana 18, Dana 20, Dana 300, 205, 208, BW 1356, NV 231, NV 242, Flip kits, doubler kits, twin sticks, adapters, etc.
Has anyone found a site that explains the differences in detail ?

Thanks

ranger5.0 · Post by **ranger5.0** » Tue May 02, 2006 8:58 pm

Ranger Dave · Post by **Ranger Dave** » Wed May 03, 2006 5:52 am

the d20 was the only one

mccutcheon4 · Post by **mccutcheon4** » Wed May 03, 2006 9:42 am

Did the Dana 20 that was OEM behind a C4 only come in the EBs ?

What transfercase was used by Ford from the factory behind a 435 NP ?

I have two 302/C4s combinations and a 435NP & bellhousing from a UPS truck that was mated to a 300-I6. The 435NP has a slave cylinder for a hydraulic clutch already attached to the bell.

I'm trying to decide which combination to use, and make the most of the parts I already have.

Thanks for all your help.
Mccutcheon4

Ranger Dave · Post by **Ranger Dave** » Wed May 03, 2006 10:36 am

the D20 was in the EB

the 4X4 435 in 79 and up had the 205 on it,prior to 79 the 435 was a 2wd version with a divorsed t-case(205 i think) except for the D21

mccutcheon4 · Post by **mccutcheon4** » Wed May 03, 2006 11:33 am

There's a Bronco that has the Dana 20 behind a 435NP out on the home
page (Nobody's I'm guessing) Does that set up require a aftermarket adapter ? How does the 205 compare to a Dana 20 ?

I have an Advanced Adapter bellhousing to run a 351W in front of a T-18
in a 64 F-500, the AA part was way out of whack, I had to use offset dowels to get it dialed in to the crank, after that experience, I prefer to use a OEM transfercase adapter if possible.

Thanks again,
Mccutcheon4

wilber · Post by **wilber** » Wed May 03, 2006 4:52 pm

to run a d20 behind a 435 you need to make an adaptor like nobody did. the 205 is a bigger heaver case than the d20. The D20 has a lower crawl ratio, of 2.41 to 1 i think, and the 205 is only a 1.96 to one. They are both gear drive cases. Both can be twinsticked. There are doublers that can put a 203 range box infront of the 205 case for a lower crawl.

I run the 435, 205, and 3.50 gears in the diffs and am happy with the crawl.

mccutcheon4 · Post by **mccutcheon4** » Wed May 03, 2006 10:10 pm

Thanks Wiber. So I need a 205, or a D20 if I can find the Ford version.
What is the advantage of a twin stick ?

I owned a 1980 Bronco years ago, I remember the transfercase in it having a aluminum case. Was it a 205 ? I thought it was a 208, for some reason. It was mounted to a C6.

bartmantom · Post by **bartmantom** » Wed May 03, 2006 10:24 pm

the advantage to twin sticking is the independant control of the front and rear axles. you can run the rear axle in low range and have the front in neutral or vise versa. heck you could even run in front wheel drive if you wanted.

Ranger Dave · Post by **Ranger Dave** » Thu May 04, 2006 6:12 am

http://www.geocities.com/redrive_psru/T ... e.htm[/url

http://www.motivegear.com/tech_info/tra ... guide.html

http://cjford.stormloader.com/Tech/transfer1.htm

mccutcheon4 · Post by **mccutcheon4** » Thu May 04, 2006 11:20 am

NICE !

Lots of good information, on those sites.

Thanks

DBrown · Post by **DBrown** » Thu May 04, 2006 2:05 pm

the 205 is realy strong from the start but the low rang sucks

the D20 has a good low range but is hard to find and expencive to install behind a NP435.

I am running a D20 in my EB and did the twin stick upgrade. I have yet to wheel it but am happy from what I have seen.

if you want dependable and cheap the 205 is the way to go...

Phillippi · Post by **Phillippi** » Thu May 04, 2006 10:22 pm

most ford t-caes will bolt to eachother right? So a 205 should bolt to an AOD right?

wilber · Post by **wilber** » Fri May 05, 2006 11:12 am

the aluminum one is the 208, it is big, and has a good crawl of 2.69 to 1. the older ford stuff used a 6 bolt round pattern, so as long as its that it will bolt up. not sure what the new stuff uses.

mccutcheon4 · Post by **mccutcheon4** » Fri May 05, 2006 11:41 am

Hey Wilber, do you work for 4-Wheel Parts ?