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Old 02-22-2012, 05:10 AM   #76 (permalink)
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I plan on having my truck pulling double duty occasionally. The doubler was my option because itll be behind a standard tranny with 4.56 gears and pushing around a 42" tire.

Ill be sure to try and let everyone know how the doubler holds up in highway applications and alot of the sand it will probably see.
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Old 02-23-2012, 11:48 AM   #77 (permalink)
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I plan on having my truck pulling double duty occasionally. The doubler was my option because itll be behind a standard tranny with 4.56 gears and pushing around a 42" tire.

Ill be sure to try and let everyone know how the doubler holds up in highway applications and alot of the sand it will probably see.
Be interesting how things hold up. 42's with 4.56's probably isn't even getting back to stock gearing, plus more rolling weight from the tires alone.
Which tranny?
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Old 02-23-2012, 12:09 PM   #78 (permalink)
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I'll be running 4.56's with 44" boggers and this doubler and a SM465... I like haveing wheel speed...
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Old 02-23-2012, 12:12 PM   #79 (permalink)
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Be interesting how things hold up. 42's with 4.56's probably isn't even getting back to stock gearing, plus more rolling weight from the tires alone.
Which tranny?
nv4500 early style with the lower first gear

built 454/nv4500/241-205/4.56 gears

i dont see a problem turning 42's
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Old 02-23-2012, 12:34 PM   #80 (permalink)
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i will be running 454/th400/241-205/4.56s with 42s as well

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Old 02-23-2012, 02:27 PM   #81 (permalink)
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Im trying to set up a 454/4l80/241/205 4.56's on 40's
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Old 02-24-2012, 09:34 AM   #82 (permalink)
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nv4500 early style with the lower first gear

built 454/nv4500/241-205/4.56 gears

i dont see a problem turning 42's
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i will be running 454/th400/241-205/4.56s with 42s as well
Are you guys doing more slow speed crawling or higher speed stuff? I'm just curious, I'm sure it will turn them, just wandering what type of terrain will be the main use. I run 5.38's, 241/205, nv4500 (w/ out the super low), Tbi 350 with some parts, on 39.5 irocks, was on 36" before with same setup. I started with 5.13's and a buddy wanted them so I went down to the 5.38's. I wouldn't trade them. I can crawl super slow, but still do 50-55 down the road in 4th at around 3200. I have enough power to hit 5th and keep going, just hate wearing the tires out.
Another buddy went from 4.56's to 5.38's and likes them too. He is on 43sx, built tbi 454, but only the 203/205 doubler.
I just like to hear what other guys are running for different styles of terrain.
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Old 02-24-2012, 09:55 AM   #83 (permalink)
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AZ rock crawling. a lot of tight narrow technical sections with some big full throttle water falls inbetween
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Old 02-24-2012, 10:10 AM   #84 (permalink)
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alot less rock crawling. where im at in texas, its mud...sand...and the little bit of crawling we do have doesnt consist of tight places or rocks.

wheel speed tends to play more of a role where Im located.
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Old 02-24-2012, 10:12 AM   #85 (permalink)
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you gotta factor in also that the 350 tbi you have probably isnt anywhere near the range of torque that the 454 is. different powerband all together.

Its a learning factor, the axles already had 4.56's so thats what i kept. never know, i may need lower. guess ill find out
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Old 02-25-2012, 06:22 PM   #86 (permalink)
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Friend of mine in our club runs 4.10 with 42's, including a C6 and 205 for only a 19:1 crawl. The engine is a moderate 460 in the low 300 hp range. Before getting a trailer he drove it to all the trails for years including going out of state at 4+ hours away. On the pavement at full tromp it will lightly spin the tires and he's ran all around Harlan and trails like Widowmaker in Slade/Red River Gorge which are slow rocky crawling. Won't deny that lower gearing would be nice but it works. I also run 4.10 with 39.5's on a mild 6.2. On the hilly roads coming back from the trails in Slade I can run as fast as I feel comfortable with aired down tires and a welded rear. My crawl ratio is much lower at 34:1 and it works pretty good. Wouldn't mind being about 40:1 but it' pretty low on the list.

I won't deny that doublers are nice but like a lot of things on this board they get blown out of proportion. You don't need a doubler (of course it depends on the crawl ratio) to run a lot of trails. Really don't see why somebody wanting a DD and driving to a fishing hole and going camping needs a doubler besides bragging rights on paper, but it's their money and vehicle.
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Old 02-25-2012, 08:29 PM   #87 (permalink)
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6.2 you are absolutely right. Doublers are WAY over rated. Especially here on the east side of America where wheel speed to get through the mud and such. I have wheeled with 40's and 3.73's. and some pretty tight trails to with a 454, and an SM465/ NP205 combo. A doubler would have just made life alot easier.
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Old 02-27-2012, 05:34 AM   #88 (permalink)
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I have a 350 with vortec heads on pane, th400/241 into a divorced 205. I like having the doubler for more gear selection. I have 5.38's and 44" tsl's. Im in Central OK - river bottom, mud, rocks, trails, and prolly a trip or two to lil sahara for some dune riding. Mine is a trailer queen too tho
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Old 02-27-2012, 07:51 AM   #89 (permalink)
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doublers may be overrated when your out mudbogging with your boyfriend or mall crawling, but here in AZ a doubler/atlas/ or some form of lower gearing is pretty much a MUST
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Old 02-27-2012, 11:58 AM   #90 (permalink)
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No doubler needed

And if you dummies out west would just learn to turn the wheel faster you wouldn't need one either

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Old 02-27-2012, 12:13 PM   #91 (permalink)
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doublers may be overrated when your out mudbogging with your boyfriend or mall crawling, but here in AZ a doubler/atlas/ or some form of lower gearing is pretty much a MUST
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No doubler needed
refer to my previous post
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Old 02-27-2012, 06:07 PM   #92 (permalink)
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doublers may be overrated when your out mudbogging with your boyfriend or mall crawling, but here in AZ a doubler/atlas/ or some form of lower gearing is pretty much a MUST
Here's a trailride we had back in November. I don't see any mud bogs or malls in the pictures The 'zuki has low gears in the t-case but they can't move without it, and the YJ does have a 4-speed Atlas but he might as well have a standard one as he only every uses one low range. My buddy with the 19:1 crawl ratio and 42's has ran all of these trails multiple times before also.

http://www.pirate4x4.com/forum/showt...727&highlight=

I'm not saying doublers don't have their place as in really technical spots they are nice, but the philosphy on here is you can't get away from the mall or mud bogs without one. Most trails here in the Midwest an extra low range transfer case can hinder your trail performance.
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Old 02-27-2012, 07:07 PM   #93 (permalink)
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Apparently your view of mud is way different then mine.


This is the type of wheeling I want to do

http://www.pirate4x4.com/forum/showt...izona+wheeling

I am a long ways away and it won't ever happen in my blazer, but the parts from my blazer will move to my future buggy build. I have done a few easy trails with 29:1 crawl ratio and it has sucked bad enough. There is no way I would try very hard trails without some mo gear
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Old 02-28-2012, 05:28 PM   #94 (permalink)
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Any more word out of the ORD camp?
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Old 02-28-2012, 07:03 PM   #95 (permalink)
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..., now that KOH is here it won't be possible until everyone is back from the race. It should be priority #1 starting the 3rd week in Feb.
Its the end of February, what is the status?
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Old 02-28-2012, 10:57 PM   #96 (permalink)
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@ chris @ord.....

the kits you have available, are they either/or dr. drop/pass drop? or are they specific to drivers or pass drop? i am really curious and interested in this kit you offer since being referred to it by mach2nh! could you pm me any further info/instructions/specs/prices....this is for a 241 pass drop to 205?
and i would like to clock the 205 up to in between 2" up and flat if possible?

thanks chris
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Old 02-29-2012, 05:35 AM   #97 (permalink)
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pretty sure its already been discussed in the thread. I believe these are for driver drop only
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Old 03-01-2012, 02:27 PM   #98 (permalink)
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Sorry for a delayed response, I haven't been on my computer since last week and I suck at adding links from my phone. I agree our opinions of mud and rocks are different. Here is our club face book page with a ton of pics, I'm in the white 4 door s10.
http://www.facebook.com/pv4wheelers?sk=photos


As to the difference of a big block and my sbc. The tan s10 truggy and the scout both have 500 hp bb's. One runs 5.38, the other 5.13, and I keep up just fine.

Also if you are going to really crawl with a manual tranny (nv4500), especially anything with ledges or waterfalls, you need gears, imo.

So I just ran the numbers on my stock 2000 SD 7.3L, yeah it has a 30:1 crawl ratio. So is it even really crawling with a 19:1 ratio?
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Old 03-09-2012, 08:35 AM   #99 (permalink)
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GM 6.0/SM465/NP241/NP205-5.38s with 39.5 Rockers. Scott, I'm comin for ya brother!
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Old 03-09-2012, 11:05 AM   #100 (permalink)
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GM 6.0/SM465/NP241/NP205-5.38s with 39.5 Rockers. Scott, I'm comin for ya brother!
sweeet, bring it on!
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