Pull any hill at 65mph in an 80 series - Video

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lordbater said:
yeah, and from towing big 30'+ boats thousands of miles cross country (not with the 80) it's better for the transmission to provide it with more power than to lug it down..

hell, I downshift to 3rd on the hills in Houston, and it's pretty much flat here, for that matter I keep it in 3rd under 45..

A
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Lurking in the 80 section but a question for those of us with 100s (yea I know) that have 5 speeds. If it will hold overdrive with the torque converter locked on very light hills and flat ground is that OK or would you prefer to put it in 4th in our case and drive it there.

FWIW it locks in both 4th and 5th. I was able to maintain 80 driving out west today with 3.5k lb 6x12 uhaul today 4th with the torque converter locked and power to spare.
 
04UZJ100 said:
Lurking in the 80 section but a question for those of us with 100s (yea I know) that have 5 speeds. If it will hold overdrive with the torque converter locked on very light hills and flat ground is that OK or would you prefer to put it in 4th in our case and drive it there.

FWIW it locks in both 4th and 5th. I was able to maintain 80 driving out west today with 3.5k lb 6x12 uhaul today 4th with the torque converter locked and power to spare.
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AFAIK, You should never drive with a load, trailer, in OD. If the TC locks in good, but it may not for long.. I'm not tranny guy for sure so I'm not really the person to answer/respond to this..


as for the others. Us here in Texas think a 10% grade is BS... :)

we don't know any better..

a
 
lordbater said:
AFAIK, You should never drive with a load, trailer, in OD. If the TC locks in good, but it may not for long.. I'm not tranny guy for sure so I'm not really the person to answer/respond to this..


as for the others. Us here in Texas think a 10% grade is BS... :)

we don't know any better..

a
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I did a bunch of reading on the topic. As long as the TCC remains locked there is no issue towing in OD. When the TCC unlocks, that is when heat is generated.

I noted trans temp in the pan/converter on my SG religiously and was able to maniuplate 4/5 and the skinny pedal for the majority (like 99.99% of highway driving) of my 700 mile trip keeping the TCC locked.
 
lordbater said:
AFAIK, You should never drive with a load, trailer, in OD. If the TC locks in good, but it may not for long.. I'm not tranny guy for sure so I'm not really the person to answer/respond to this..


as for the others. Us here in Texas think a 10% grade is BS... :)

we don't know any better..

a
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Why do you feel that way? I have towed with my 80 in OD, turning it off when the terrain is mountains and back on on flat land

For the 100 owner question, it's a 5 speed transmission without the set OD function like the 80. Thats not going to be an issue. Just down shift when the RPMs warrant it
 
it's so much the locking/unlocking of the converter that builds heat, but rather it's the constant shifting in and out of OD.

It's best to lock it in 3rd and let it stay there. Every shift means more heat is added to the fluid. Plus with the engine spinning fast more water is moved through the cooling system which helps cool the motor and also cool the trans through the radiator heat exchanger.
 
Thanks. Sorry for hijacking. I'm guilty of being afraid of RPMs for any sustained period of time as someone mentioned.
 
coax said:
I was going to mention teton pass as well; With 3 people in the cruiser on Teton Pass there were sections when I couldn't even hold speed in 2nd gear at WOT. That is a hell of a pass. I'm jealous that you could go 50. Good thing the skiing is excellent and driving slow just gives time to scope out the skiing:D
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Oh gawd no, I'm not near 50 on Teton or heading up Slum. But I'll hold 50 up Monarch or Eisenhower. I am heading over Monarch Friday; I'm so happy/excited to be doing 6 days of camping, wheeling, hiking, pooping in the woods, ...
 
Romer said:
Why do you feel that way? I have towed with my 80 in OD, turning it off when the terrain is mountains and back on on flat land

For the 100 owner question, it's a 5 speed transmission without the set OD function like the 80. Thats not going to be an issue. Just down shift when the RPMs warrant it
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I'm sorry, I mentioned before, but didn't requalify my statement on this post.. I wasn't specifically referring to 80's, just big boats and other big trucks..

I'm hell on trannys... I've destroyed 1tons, dodge chevy and fords, it has something to do with the skinny pedal.. I also get bad gas mileage... a drag racer can get better economy than me... but I burn transmission up on a regular basis.. The 80 has been solid, with the exception listed below...

I only have 80 experience with my '91, and it locks in nicely, no matter the load, even my 23' offshore boat (for short haul, no freeway driving), although it can't quite make the speed limit..

on a different note.. it seems that it is not locking out (without any extra load) like it used to.... time for a flush? I get a little high revving before shifting between 1st and 2nd...


didn't mean to lead the thread astray..

A
 
lordbater said:
I'm sorry, I mentioned before, but didn't requalify my statement on this post.. I wasn't specifically referring to 80's, just big boats and other big trucks..

I'm hell on trannys... I've destroyed 1tons, dodge chevy and fords, it has something to do with the skinny pedal.. I also get bad gas mileage... a drag racer can get better economy than me... but I burn transmission up on a regular basis.. The 80 has been solid, with the exception listed below...

I only have 80 experience with my '91, and it locks in nicely, no matter the load, even my 23' offshore boat (for short haul, no freeway driving), although it can't quite make the speed limit..

on a different note.. it seems that it is not locking out (without any extra load) like it used to.... time for a flush? I get a little high revving before shifting between 1st and 2nd...


didn't mean to lead the thread astray..

A
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No worries. It was part of the discussion. OD is better for the flatlands in all respects. The 04 100 the other poster mentioned has a different tranny than the 100 series Phil mentioned so it was a different answer
 
Romer said:
No worries. It was part of the discussion. OD is better for the flatlands in all respects. The 04 100 the other poster mentioned has a different tranny than the 100 series Phil mentioned so it was a different answer
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Soooo? some of the 100 series have the same tranny as some of the late model 80's?

or bad information on the previous poster, or my misunderstanding?

(my knowledge is really limited to my '91.. I do know that '93-'94 have no 2nd gear start and after that there was a button, that sort of stuff, etc...)


back on track. I use my 12-14' (it tapers, so you can measure it differently...) trailer loaded to the bone for trips all over Texas a bunch of it on the beach. when I have to hit the few 'hills' we have here, I find 3rd just fine for the 50-65mph range.. I got a stockers with 33x12.5x15s... 3fe... I suspect most of yall have the extra 57HP? I bet it helps out a hell of a lot...

a
 
Yup, the A343F tranny was used starting in mid 1995 with the 1fZ motor and the initial 100 series with the 2UZ motor. The transmission changed to a 5-speed in 2003 which was a huge improvement
 
If I had that song playing all the way up a grade like that I would push my motor as well. You should get a job with Hollywood, you video skills are impressive.
I haven't ever pushed my tranny down into 2nd but I usually just pop the O/D off and put the power button on before I really his the grade and I seem fine as long as I don't drop below about 2200 rpm. I'm am going to have to try this next run over the mountains.
 
How far down in the gears do you guys who live near the mountains push your 80 series when descending? I have pretty much used all of the gears when in the mountains and have always wondered if I was putting undue stress on the transmission or transfer case. I have to travel to get to the mountains so I don't know the result of doing this frequently over a long period of time.

I am about to go to Colorado again and your feedback will be appreciated.
 
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I never felt the need to go into second on a descent, unless there was a traffic jam. Second seems like the gear to use if you are trying not to exceed 50.

In open traffic on the mountain passes I was on, it was good enough to turn off overdrive, and occasionally touch the brakes if needed. It was rarely needed unless traffic backed up. That includes both directions on the road to Eisenhower.
 
Yeah I remember driving up this in a rented Jeep with a carburetor, I thought we were going to have to get out and push at the top.

hawaiicruz said:
That's nothing, Mauna Kea = 9000 feet in less than 12 miles
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Yeah I wouldn't even try it in my 91 (especially because it has no doors, sides, etc) My friend with a 22r PU has to pull most of the hill in low range
 
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