tranny help - JeepForum.com

 
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post #1 of 13 Old 07-01-2010, 01:07 PM Thread Starter
m44
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2003 TJ Wrangler 
 
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tranny help

Hey guys I have decided to get a new tranny for my recently acquired 79 cj7. It has a AMC 360 and a 727 TF in it now not sure on the T-case. I would like to convert it to manual tranny, So my question is what do you recommend I get for a tranny. I would like to be able to get a tranny that can bolt up to a dana 300 t-case. So what do you guys recommend for trannys that work with a AMC 360. I am currently working on acquiring the pedal assembly and the other clutch parts I need.


2003 Tj sport daily driver with a bunch of mods
1998 wrangler rolled and being rebuilt with tons
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post #2 of 13 Old 07-01-2010, 02:09 PM
kickingprop
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T176 is the only direct bolt-in to the Dana 300 that can handle the power of a V8, Anything else will need an adapter of some sort

1985 CJ7 Project
Phase One : 5.3L Vortec/4L60E, Moser axles for AMC20, Twin Stick'd Dana300 - Completed
Phase Two: Bedliner, Rollcage, Seats, BESRK Rear Bumper w/ tire swing, Soft Top, and a few other goodies - Mostly Complete
Phase Three: Waggy 44 front, Scout D44 Rear, 4.56's, ARB's (F/R) SOA with YJ Springs, 35x12.50x15 BFG MT - Not Even Close to beginning

Also a mostly rust-free 1970 Scout 800A That I'll get to start working on someday...

Quote:
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post #3 of 13 Old 07-01-2010, 02:29 PM
crzdmnky
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Cant help you with Trannys, they just gross me out man.....


As far as Transmissions, Novak has all the information you are looking for. Novakadapters.com
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post #4 of 13 Old 07-01-2010, 04:29 PM Thread Starter
m44
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So the t176 is a direct bolt up to my engine............ I am open to other trannys options if you guys think there are better ones that cant get a dana 300

2003 Tj sport daily driver with a bunch of mods
1998 wrangler rolled and being rebuilt with tons
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post #5 of 13 Old 07-01-2010, 04:35 PM
crzdmnky
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T18, sm420, sm 435, nv3550, np465. It all depends what your wanting to do, a t176 is a direct bolt on, but with the proper adapter, you can put just about any transmission in your jeep.
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post #6 of 13 Old 07-01-2010, 04:48 PM
jeffyjensen
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i have a buddy that runs a T176 behind his 383 with 300hp with no issues. I am keeping the one in my jeep with a 351w in front of it. I figure if it breaks I'll buy a T18. but the T176 is a good transmission.
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post #7 of 13 Old 07-02-2010, 09:09 PM
BlueRubiconrich
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Hello, It's a 79 that's a Dana 20 he has. So he can use a T18 and bolt that up
you will not blow that up. You have to other things you can do.
Find a Scout Dana 300 and bolt that to your T18 or buy an adapter to bolt a Ford T18 to a Jeep Dana 300.

Rubicon Rich ,05 TJ Rubicon: PatriotJeepers.com
86 CJ7 258,T18,Scout Dana300,twin sticks,Dana44's,4W Disc, locked,35's,YORK OBA,Warn 8274,fullcage.
51 M100 1/4 ton Jeep trailer
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post #8 of 13 Old 07-03-2010, 02:29 AM
jeepdaddy2000
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If he is running an auto, it may well be a q trac t case. This means that the rear axle will be offset. That aside, the answer to your question is in how you want to use your Jeep.
Slow speed technical wheeling will require a granny low first. This usually means a truck transmission such as as the T 18 or an SM series. These are brutally strong, but tend to be heavy and slow shifters.
For average wheeling, hunting trips, and exploring, or mall crawling, a T176 four speed will give you a marginally lower first than the T150 three speed, although both transmissions will hold up well behind the V8 unless badly abused.
Remember that tire size and gear ratio will have a hand in your decision as well. too tall gearing or huge tires can cause performance problems with a manual that an auto can cover up.
all swaps will most likely require adapters and driveline modifications.
Don't forget that if your running a 20 rear, a set of one piece axles will be needed to cover the added HP of the 360.
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post #9 of 13 Old 07-03-2010, 11:00 AM
Fjguercio
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I have some extra parts and nice solution for you

I have a CJ T18 & Dana 20 combo still hooked together. The t18 has the Jeep Bolt patterns and the short input shaft that is all correct for the CJ. It cam out of a CJ5 from 1976. I also have a AMC 20 with 1 pc moser axles and new brake pads and rotars with 3.54 gears that are correct for the 78/79 time period and most likely match your Front Axle gearing. This rear AMC 20 is centered and 1 pc axles so would be correct for the std trans and correct the auto trans transfere/axle offset issue that I believe is there too. The 20 rear axle has few miles on it since the 1pc from where I purchased it and my plans have changed. The T18 has the 4:1 granny not the 6:1, but is still a very good option. Both are very clean and ready to use. The axle will need new spring perches they look weak.

I have a T18/Dana 20 with 3.54 axles and its a good combo with the granny gear.

T18/Dana 20 Combo and the AMC 20 with 1 pc mosers

all for $1000
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post #10 of 13 Old 07-04-2010, 03:23 PM
crzdmnky
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$1000 seems steep man. You can find them 4.0 T18's all day for $100, and the dana 20's for $50. The rear axle is worth $300 or so. But I am not one to judge someone elses stuff, just saying.
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post #11 of 13 Old 07-04-2010, 05:41 PM
Fjguercio
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If you can buy T18 set up for a CJ with the short input shaft and the proper adapter for a Dana 20 or Dana 300 for $100 buy them. You can put them on Ebay and sell them all day long for $500 or better.

The short input shaft alone is $200 plus the intall labor and seals, the adapters are $375 range for the Dana 20 or Dana 300. Many of us do not have the knowledge or the presses to change over the trans so for many its better to just get the correct stuff.
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post #12 of 13 Old 07-04-2010, 05:48 PM
crzdmnky
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Nah, not the CJ t18's and Scout T18's. But the Fords are abundant :P. Yeah, I wasnt thinking when I posted that last post. The CJ ones are pretty rare, I have a CJ with one in it, then I also have a Ford wide ratio t18 getting ready to be adapted to a Dana300. Anyways, t18 is a the way to go, will never break the thing unless you run it out of fluid.
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post #13 of 13 Old 07-05-2010, 09:43 AM
BlueRubiconrich
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you mean 4.2 (258)

Also They are out there look for a 1980 Scout Dana 300
TC146 it will bolt up to a T18 no adapter but you need the T19 bull gear
from that combo.

Rubicon Rich ,05 TJ Rubicon: PatriotJeepers.com
86 CJ7 258,T18,Scout Dana300,twin sticks,Dana44's,4W Disc, locked,35's,YORK OBA,Warn 8274,fullcage.
51 M100 1/4 ton Jeep trailer
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