I found my 27 spline input, fig 8 pattern 205 in less than 2 days of looking for $150 to then mate to a titan box (and thats in idaho). There are deals everywhere if you look in the right places
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Transfer case options. Doubler or magnum
- Thread starter chris85
- Start date
I found my 27 spline input, fig 8 pattern 205 in less than 2 days of looking for $150 to then mate to a titan box (and thats in idaho). There are deals everywhere if you look in the right places
After some looking, there is a pair of 205's about 50 miles from here but they want $400 each. I'll keep looking. Nothing that needs to happen right now but the sooner the better.
http://www.grimmjeeper.com/gears.html
This site will tell you all you need. 4l80e with 4.56 and 40s turns about 2100 rpm @ 70mph.
I do plan to drive mine long distances, hence one of my reasons for the magnum/Titan.
Plus, I could be wrong here, I think it might help make up for some lack of seat time. Training wheels sort of. Ease over something rather than needing to throttle over it.
Well in the real chunky stuff, it allows a couple things:
Instead of romping on it, you can bring the engine up slowly, thus keeping the suspension and tires on control instead of bouncing
Also keeps steering pressure high so you have full pressure on your pump for easy steering
Instead of romping on it, you can bring the engine up slowly, thus keeping the suspension and tires on control instead of bouncing
Also keeps steering pressure high so you have full pressure on your pump for easy steering
454Sub
5/8 ton status
The control aspect is super nice. Even a 203-205 setup has awesome control over a single case. It gives almost compression braking to an auto for downhills as well.
Helps with front shaft angle as well. With my HP front 60 my 205 is rotated completely flat and my SD front 1350 CV is nowhere near bind even at full droop. It did bind and break my 1350 axle yoke thought. Lol.
Helps with front shaft angle as well. With my HP front 60 my 205 is rotated completely flat and my SD front 1350 CV is nowhere near bind even at full droop. It did bind and break my 1350 axle yoke thought. Lol.
Any round pattern and/or 32 spline input 205's are going to be more expensive. If you get a 27 spline or 10 spline case, you will have to bore out the input to accept the larger bearing for a magnum/titan box...but sometimes it's still cheaper to pick up a 27/10 spline version and have it bored. If going magnum/titan you will have to tear down the case to replace the input anyways (as both systems replace the factory input of the 205 with their beefed up version, even if you start with a 32 spline version), so since you are going through the trouble anyways, it doesn't really matter if you get a 27/10 spline case. You just have to do the one extra step of boring the case, but $ wise, you will still probably work out better in the end
At this point I'm not experienced enough to know how much I'll use "double" low but I am looking forward to having a higher low range with the NP205. If I lock the hubs I'm usually in low range. There are times I'd like a little more speed. There are also lots of times I've been very happy to have the lower gearing of the NP241 low range.
I was planning to ask here on CK5 what people use double low for. Also figured I would chat with the guys at ORD about it too.
I was planning to ask here on CK5 what people use double low for. Also figured I would chat with the guys at ORD about it too.
Had an interesting conversation with Jack last year about it, was pretty enlightening
I only see Jack at Blazer Bash so I guess I'm out of luck. 
454Sub
5/8 ton status
That's why I would go with a 241 based doubler. Then you get both ratios to play with. 2:1 is handy dandy for some stuff no doubt about it . Plus being able to independently control outputs is a huge thing. Don't get me wrong I love my 203-205 but the 241 style is leaps and bounds ahead of it.
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In my previous Toyota life, I mostly used double low when I needed to take a leak.
454Sub
5/8 ton status
Double low is also nice for any sort of slick downhill stuff. No brakes, no gas just idling down.
You'll figure it out quick. There are lots of factors that are sometimes specific to your truck as to why you will want to choose a certain gear option. When I did that ITTC competition, during the tow test, I used 2:72:1 cause my tired old TBI350 needed just a bit more gearing help...in your CCLB with a big block and smaller tires, in the same situation you would probably wanted 2:1. My point of it is to prove that the other specs of the truck can make it a different gear choice you might want than the next guy with the same tcase. And honestly, just playing around with the gear options while wheeling is half the fun
. You're gonna love it Scott!
I find myself looking for something to use double low on, it's addicting.
It's a hell of a lot easier to shift the planetaries so I find myself leaving the 205 in high and switching the crawl box from high to low the majority of the time. When something fun comes up the 205 goes into low and it's party time.
bp71k5
3/4 ton status
I always liked double low when there is a bunch of stuff on the ground on an incline that would bounce around the driver and his/my gas pedal foot. The lower gearing lessens the effects of my foot not being steady on the gas pedal and makes the truck move a little smoother over that stuff rather than bouncing around. Might not be as much of an issue with an auto trans though.
Also nice for that giant long hells revenge climb at the start. Once you start, you don't want to stall, but maybe another manual trans only benefit.
Also nice for that giant long hells revenge climb at the start. Once you start, you don't want to stall, but maybe another manual trans only benefit.
For those bouncy parts the hand throttle works fantastic on a standard
That is why I loved my diesel on hill climbs, i only had the sm465/205 with 3.08 and 35" tires and I would put it in low gear and sit back and watch.
T
tenderfoot
Guest
In considering all the options, don't forget about driveshafts. My buddy Nate is learning this the hard way after putting a Doubler in his K5.
