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Old 04-25-2012, 04:08 PM   #1 (permalink)
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chain drive case strength
Strong enough for 300 hp, 3500 lbs and 42's?
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Old 04-25-2012, 06:46 PM   #2 (permalink)
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Strong enough for 300 hp, 3500 lbs and 42's?
Probably not, input shaft is the weak link. No wheel drive sucks. I would spring for an atlas with the setup your looking at.
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Old 04-25-2012, 10:23 PM   #3 (permalink)
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As far as case strength, I got my tacoma hung up on a 8" diameter stump that was in the middle of some soupy ruts. With some harsh 2' back and forth each way I used the transfer case to rip the stump out of the ground. The little sheetmetal plate on the bottom of it is perfectly contoured to the aluminum underneath now.
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Old 04-26-2012, 11:31 AM   #4 (permalink)
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Quote:
Originally Posted by Wilson View Post
Strong enough for 300 hp, 3500 lbs and 42's?
which case? There are a few different models with a couple of different input shafts. I'm just shy of 300hp, 37s and duals. No problem holding up to that while driving to the mall
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Old 04-26-2012, 12:06 PM   #5 (permalink)
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on the first gen tundra and sequoia and the v8 4runner, it uses a similar chain drive with over 340lb of torque stock. if i recall right, when trd made supercharger for the tundra/sequoia the transfer case was not the problem, the weak link was the rear diff.
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Old 04-26-2012, 03:43 PM   #6 (permalink)
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Quote:
Originally Posted by rockota View Post
which case? There are a few different models with a couple of different input shafts. I'm just shy of 300hp, 37s and duals. No problem holding up to that while driving to the mall
My only requirement would be that it bolts to a marlin or tg Tacoma doubler. I ASSumed the tundra's had a different case/ pattern?
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Old 04-27-2012, 03:58 PM   #7 (permalink)
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what diff gears?
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Old 04-27-2012, 04:20 PM   #8 (permalink)
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5.38
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Old 04-27-2012, 04:20 PM   #9 (permalink)
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chain yes, input strength, questionable.
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Old 04-27-2012, 04:43 PM   #10 (permalink)
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Quote:
Originally Posted by CronusTRD View Post
chain yes, input strength, questionable.
The outputs are 30 spl I believe, sound like it is the length of the input that is questionable?
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Old 04-27-2012, 05:15 PM   #11 (permalink)
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mine doing fine with the 2.7 and 44" and mogs.
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Old 04-27-2012, 08:40 PM   #12 (permalink)
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I can take a picture of a stock 23 spline taco input compared to a stock 21 spline gear case input when get home. You can see just how much shorter it is.
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Old 04-28-2012, 10:56 AM   #13 (permalink)
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Quote:
Originally Posted by Hyena View Post
I can take a picture of a stock 23 spline taco input compared to a stock 21 spline gear case input when get home. You can see just how much shorter it is.
Thanks Brad
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Old 04-28-2012, 06:24 PM   #14 (permalink)
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Nevermind, can't get the coupler off the stock taco case. The other case I had slid right off but not this one.
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Old 04-28-2012, 07:02 PM   #15 (permalink)
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Quote:
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Nevermind, can't get the coupler off the stock taco case. The other case I had slid right off but not this one.
Is it a matter of having a longer input made, or is there nowhere for the extra length to go?
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Last edited by Wilson; 04-28-2012 at 07:03 PM.
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Old 04-28-2012, 07:44 PM   #16 (permalink)
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I'm not sure how close the t-case input and the tranny output are to each other.
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Old 04-28-2012, 07:57 PM   #17 (permalink)
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Quote:
Originally Posted by Hyena View Post
I'm not sure how close the t-case input and the tranny output are to each other.
How close is the Tacoma case length-wise to a gear-driven mini case?
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Old 05-01-2012, 05:35 PM   #18 (permalink)
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Mating surface of the Tacoma case to the rear flange is 12 1/2 inches. Gear case is roughly 12 3/4 inches, hard to measure Callens cases accurately with his crossmember onthe way.
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Old 05-01-2012, 06:58 PM   #19 (permalink)
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Thanks Brad, I decided to pass on the taco crawler after calling marlin on Monday. I'll probably be going "lefty."
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Old 05-01-2012, 08:56 PM   #20 (permalink)
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I have a tacoma case on the shelf. Be right back.
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Old 05-01-2012, 09:13 PM   #21 (permalink)
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No standard Tacoma case but this is from a 2000 limited 4Runner with a 3.4L.

Mounting surface to rear output flange is 15 5/8"
The input is 4 1/16" from mounting surface to front of input.


If I remember correctly the 4cil input is around 2 5/8" from mounting surface to front of input.
Last edited by GreaseMonkeyGarage; 05-01-2012 at 09:13 PM.
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Old 05-01-2012, 09:58 PM   #22 (permalink)
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No problem!
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Old 05-02-2012, 10:10 AM   #23 (permalink)
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Quote:
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mine doing fine with the 2.7 and 44" and mogs.
Pics &/or build thread required.
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Old 05-03-2012, 07:35 PM   #24 (permalink)
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Pics &/or build thread required.
heres a little vid. http://youtu.be/pg-MmIcd0-g. it started as a 59 fiat now has a new life as a wheeler. i should do a build up soon.
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Old 05-19-2012, 11:43 PM   #25 (permalink)
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Been workinq
I have a stock 3.4 auto duels stock gear case stock chain driven case my truck weighs 5800lbs tubed from front to back 60 70 42"s h1 wheels and a fifth spare I have had good luck with it I don't beat my truck but I do have fun thou.....
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