What does a transfer case doubler do?
The Doubler uses an NP205 transfer case, which is a gear-driven transfer case with an iron housing and adds the gear reduction half of an NP203 transfer case in front of it. This effectively doubles your low range, with the NP203 offering a 2:1 reduction and the NP205 providing 1.96:1 low range.
What is a NP203 Doubler?
Basically, the Doubler consists of the gearbox section from an NP203 transfer case coupled to a complete 205 transfer case. It’s a 3 speed transfer case system, it has options for the 1:1 and 2:1 options that an NP205 would normally have plus a double low range gear of 4:1 with both cases in low range.
How long is a 203 205 Doubler?
The overall length of the Doubler™ is now 21.5″ for all versions. This is measured from the front face of the 203 to the rear yoke centerline on the 205. This is the same length as the original 203, and only 6″ longer than original GM 205 applications.
Is a 203 transfer case full time?
The New Process 203 Transfer Case is a fullsize, full time, chain driven transfer case. The transfer case does have a locked setting for both low and high range operation, which locks the differential, disabling the full time behavior and equally transmitting power between the front and rear axles.
What did Dana 300 come in?
The Dana 300 is found in 1980-1986 Jeep vehicles. It is one of the most respected transfer cases and is regarded as the gold standard by casual Jeepers up through the enthusiasts. While only provided in 1/4 Ton rated Jeeps, its strength surpasses this duty.
Will a NP203 bolt to a 700R4?
To adapt a 203 or 205 to a 700R4, you can install this spacer OR use this shorter replacement output shaft. Once the length is taken care of the TH350 parts will bolt right up. If you’re installing an NP203 behind a 700R4, you will need this spacer and a TH350 to NP203 adapter.
What’s the difference between NP203 and NP205?
The NP203 is chain driven and has a somewhat weak center differential. It is also fulltime 4WD. The NP205 is all gear driven, is able to be twin sticked with ease and is probably the strongest light duty transfer case ever made. As far as transmission choice, it’s up to you.
Is 203 transfer case Good?
The 203 will be fine, especially if it bolts up to the 700r4. It is a full time case but can be converted to part time. It has a 2:1 low range which is not great, but OK for anything except extreme rock crawling.
How can you tell the difference between a 203 and 205 transfer case?
Re: Transfer case question: 203 vs. 205. NP 205’s are a part time t-case while the NP 203 is a fulltime case. The easiest way to tell if you dont know what your looking for is to crawl under the right side of the truck and look on the t-case between the input from the tranny and the output to the front driveshaft.
What oil does a Dana 300 use?
It had auto trans fluid in it. I didn’t think it was unusual because the suburban runs with that. What I learned from all the helpful folks is the D 300 is a gear driven design and uses gear oil(85w90). Suburban is chain driven and uses dextron.
Is the Dana 300 a good transfer case?
One of the best transfer cases ever built is the Dana Model 300. This cast iron transfer case is found in 1980 to 1986 model-year Jeeps, but it adapts well to many popular transmissions. Builders like it because it’s light and durable, but still provides superior performance.
How much HP can a NP205 handle?
This NP205 retrofit makes the t-case capable of “handling 1,000hp and 54-inch tires” boasts Kris Kusznieryk, the president of NWF. They look like they would stand the test, too.
Why is a dual case adapter called a doubler?
It is sometimes called a doubler because one dual case adapter doubles the number of low range gear sets in your truck (your t/case’s low range + a second low range). Installing two dual case adapters results in a triple setup where you have two new low range gear sets plus your t/case’s low range gear set.
What does a dual transfer case adapter do?
A dual transfer case adapter is a device that adds an additional low range reduction gear set to your truck. It is sometimes called a doubler because one dual case adapter doubles the number of low range gear sets in your truck (your t/case’s low range + a second low range).
What do you call a dual case crawler?
Installing two dual case adapters results in a triple setup where you have two new low range gear sets plus your t/case’s low range gear set. All Marlin Crawler dual case units are known as Crawl Boxes.
Can a stock crossmember be used in a dual case crawler?
As for your crossmember, in most applications your stock Toyota crossmember may be reused with minor modifications, however we recommend using a proper dual case crossmember, such as a Budbuilt Budlite, because a dual case crossmember provides more support for the added weight and torque than the stock counterpart. Sounds great!