Re: [AMC-list] T176

[adh@xxxxxxxxxxxxxxxxx (Sandwich Maker)]

" From: Frank Swygert <farna@xxxxxxx>
" 
" Ken, I don't know the torque capacity, but Jeep used it in the
" 1/2 ton (J-10) full size pickups behind the 360/2V in the 80s.
" The 3/4 ton (J-20) got the heavier duty T-18 four speed.
" 
" >From the Novak Adapters site
" (http://www.novak-adapt.com/knowledge/t176.htm):
" 
" "The Tremec T176 transmission was the optional four-speed
" transmission found in 1980 to 1986 Jeep CJ models.  It is a good
" transmission when well maintained and has often been adapted to
" V8 and V6 power.
" 
" Rated at medium-duty, the T176 is stronger than its compact size
" may suggest.  Though it only holds a candle to the truck style
" four-speeds' strengths and capabilities, the T176 is frequently
" retained in CJ Jeeps when married to mild GM V6 and V8 power."
" 
" The above statement, and that AMC used them in J-10s w/360,
" indicate that it is probably stronger than a T-5, but not strong
" enough for a real heavy load.  First gear ratios changed in the
" 80s, see 
" http://www.wagoneers.com/FSJ/tech/Transmissions/SJ-transmissions.html
" (note that there is one typo -- 82/83 says "J-10 only" for the
" T-18, but it should be "J-20 only).  The chart indicates that the
" last J-20s were auto only, which is correct.

my 2c:

the t176/7/8 are ford toploader designs, i believe with aluminum
cases.  back in the '60s, ford had a close-ratio iron case model
considered beefy enough for 427s and 429s.  tremec has 5sp derivatives
rated up to 600 ft-lbs.  one of the nascar trannies [jesel?] is based
on the toploader, though everything is custom.  magnesium cases...

as it is, use with the 360 in a truck suggests the t176 rating must be
approaching 400 ft-lbs.  putting the guts in an iron case would help,
and using the 31-spline bbf mainshaft for 2wd would also.

in the '80s, ford was putting o/d toploaders [with low-mid 3s for 1st]
into their pickups, but i don't know offhand with what engines or
whether iron or aluminum cases.

jeep gears are popular with ford rodders seeking wider ratios for
their toploaders.

the t18 etc are of course stronger - they're designed for medium duty
trucks.  the engines aren't bigger but they see a lot more full
throttle action, all day, every day.
________________________________________________________________________
Andrew Hay                                  the genius nature
internet rambler                            is to see what all have seen
adh@xxxxxxxxxxxxxxxxx                       and think what none thought
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