question about T-176! - JeepForum.com
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post #1 of 25 Old 05-07-2012, 09:16 AM Thread Starter
amir_abbas
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question about T-176!

Hi all!
I heard that T-176 has two types with two different gear ratios. One goes with L6 engine and the other with V8.
Does it correct?! or there is only one type with just one gear ratio?

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post #2 of 25 Old 05-07-2012, 10:02 AM
wm69
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T177 came in FSJ's and had a lower 1st gear. I got a T177 that the previous owner said came original in his CJ5, but most sources say the T177 was FSJ only, while the T176 was CJ only

85 CJ7 258, borla header, Team Rush, MC2100 ,optima batt, Warn 8274, agr super box 2 & pump, T5 w/ B&M shifter, centerforce 2, superior 1 piece axles, warn hubs 2.5 in lift, 31" BFG MT

85 CJ7 258, A/C, T176, MC2100, Team Rush, Warn XD8000i, superwinch hubs, 3in lift 31" BFG AT/KO
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post #3 of 25 Old 05-07-2012, 10:21 AM Thread Starter
amir_abbas
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Thanks but T-177 and T-178 are different from T-176.
I mean T-176 itself has two types or not??!
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post #4 of 25 Old 05-07-2012, 10:26 AM
Cutlass327
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http://www.novak-adapt.com/knowledge/t176.htm

They are all considered the 'same' transmission, only the number designation says what is inside is the way I take it. Check out the 3rd paragraph in the link above..

Rick

1978 CJ5 5.0HO/T177/D300, '86 D30/D44 WT axles, 'glass body, 31x10.5 BFG A/T, TDK galv'd frame - DD and weekend toy

http://www.jeepforum.com/forum/f8/ri...8-cj5-1223197/
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post #5 of 25 Old 05-07-2012, 10:44 AM
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T-176's and T-177's were used in CJ's contrary to what a few web sites say about them only being used in FSJ's. I have a T-176 that came stock in my 80 CJ-5. I've found T-177's in 81 and later CJ's. In fact, I think most of the T-176's out there are actually T-177's since it makes sense that as Jeep upped rearend ratios to conserve gas, they offset the higher gear ratio with a transmission with a lower first gear.

Look at the tag riveted to the front passenger side of the transmission case. It will have one of these ID numbers:

5359389 = T-177 (3.82 first gear)
5359390 = T-176 (3.52 first gear)


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post #6 of 25 Old 05-07-2012, 10:49 AM
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http://www.jeepforum.com/forum/f8/up...-177-a-971945/

85 CJ7 258, borla header, Team Rush, MC2100 ,optima batt, Warn 8274, agr super box 2 & pump, T5 w/ B&M shifter, centerforce 2, superior 1 piece axles, warn hubs 2.5 in lift, 31" BFG MT

85 CJ7 258, A/C, T176, MC2100, Team Rush, Warn XD8000i, superwinch hubs, 3in lift 31" BFG AT/KO
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post #7 of 25 Old 05-07-2012, 10:59 AM Thread Starter
amir_abbas
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so you all tell about T-177 but again I say:
Does T-176 itself has 2 types?! yes or no??
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post #8 of 25 Old 05-07-2012, 11:56 AM
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No. Tremec made 3 transmissions with very similar parts. The difference between a T-176, T177 and T-178 is in the gear ratios.

Wait, that's not exactly right. There were different input shaft lengths, used in full Size Jeeps, with a spacer. It was used to move the transmission back from the dash, so the shift lever wouldn't hit the dash.

Why? It seems like you have more to your question.

There are some things you will learn while holding a cat by the tail that can be learned no other way...
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post #9 of 25 Old 05-07-2012, 12:23 PM Thread Starter
amir_abbas
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Quote:
Originally Posted by BeatCJ View Post
No. Tremec made 3 transmissions with very similar parts. The difference between a T-176, T177 and T-178 is in the gear ratios.

Wait, that's not exactly right. There were different input shaft lengths, used in full Size Jeeps, with a spacer. It was used to move the transmission back from the dash, so the shift lever wouldn't hit the dash.

Why? It seems like you have more to your question.
What?!
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post #10 of 25 Old 05-07-2012, 12:36 PM
BeatCJ
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Just curious why you are asking. Do you have a specific question, are you looking at two different transmissions, one looks like a T-176, but is a little off, or something? Does one have overdrive, or just a different gear ratio?

There are some things you will learn while holding a cat by the tail that can be learned no other way...
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post #11 of 25 Old 05-07-2012, 12:37 PM
wm69
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Well, according to this, and if you ONLY want to use the exact T176 designation, then no....

http://www.advanceadapters.com/tech-vault/tremec-t176/

of course, that same info sheet also mentions that there were other variations of the T176, namely, the T177 and T178.

Perhaps you should give more info as to what exactly you are trying to do and what specific information you are looking for in regards to the T176

Going from your initial question, then YES. There was a T176 behind most 6 cylinders in CJ's, and there was the same transmission with different input shaft length and a different gear ratio which was used behind V8's in FSJ's, which was the exact same transmission otherwise, and so one could tell the difference, they designated the one with a different gear ratio the T177!

85 CJ7 258, borla header, Team Rush, MC2100 ,optima batt, Warn 8274, agr super box 2 & pump, T5 w/ B&M shifter, centerforce 2, superior 1 piece axles, warn hubs 2.5 in lift, 31" BFG MT

85 CJ7 258, A/C, T176, MC2100, Team Rush, Warn XD8000i, superwinch hubs, 3in lift 31" BFG AT/KO
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post #12 of 25 Old 05-07-2012, 12:56 PM Thread Starter
amir_abbas
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I reached to answer!
thank you all!
.
I just confused between these T-176 and T-177.
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post #13 of 25 Old 05-08-2012, 10:12 AM
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To add to this, according to the p/n stamped on the tag of the transmission I just bought from a guy saying the transmission came from an 80's CJ I have a T177.. tag #5358839.

Rick

1978 CJ5 5.0HO/T177/D300, '86 D30/D44 WT axles, 'glass body, 31x10.5 BFG A/T, TDK galv'd frame - DD and weekend toy

http://www.jeepforum.com/forum/f8/ri...8-cj5-1223197/
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post #14 of 25 Old 05-08-2012, 10:35 AM Thread Starter
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T-177 is a version of T-176 for L6 engine and T-176 is for V8 engine.
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post #15 of 25 Old 05-08-2012, 12:07 PM
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Quote:
Originally Posted by amir_abbas View Post
T-177 is a version of T-176 for L6 engine and T-176 is for V8 engine.
Not necessarily. 80 CJ-5's with 304 came with T-176 but FSJ's with V-8's came with T-178. T-178's have 3:1 first gear with long input shaft.
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