9MM

Hey guys I'm curios why a standard runs cooler on steep grades? could it be to do with no torque converter to lock and unlock when it feels like it.

Dads 90 same truck as mine but his was an auto n base model mines a standard n loaded. With mine going faster up the same hill then he used to drive his up this hill will barely move the temp gauge but his he would have to back right off to the speed limit to keep temps in check.

Any idea why that might be I'm only asking to fix my curiosity.

maybe368

I don't really have an answer for your question, but it amazes me that there is so much worry about engine temperature on this site. I say that because I live just north of hades and I never worry about my rig getting hot, ever. It has never gotten hot in the 10 years that I have owned it. Maybe it's the 100% antifreeze that I run......Please stifle the need to tell me the science that I am violating, I have already heard and rejected all of it. I never need to replace any component of the cooling system for failure caused by corrosion because there is none. Go figure, it is like the world has turned over and everything is opposite. That is all from beautiful Mexico....This otta set off a few fuses on July 4th......Marco de la playa en Mexico

9MM

K I was just wondering as in Arizona it gets pretty hot here in Canada's only desert and we have steep mountains.

Gots_a_sol

there is a heat exchanger in the block that pulls heat from the trans fluid and transfers it to the engine coolant.

9MM

Yeah a big round canister sorta thing under the exhaust manifold dad just thought it was a tranny cooler well guess in a sense it is and does the same as on the 80-90s gm with the trans cooler in the rad but that would explain the higher engine temps on the auto.

maybe368

FWIW, We have steep mountains too...Mark

9MM

Sorry never been to arizona.

wannadiesel

Because a 1st gen torque converter does a very good job converting torque to heat.

dB Zac

because the auto trans it self runs hotter then a M/T and its bolted to the engine. Why does it... because there are pumps and friction disc's, a fluid coupler, not to mention the cooler for the unit transfers heat to the engine coolant.

9MM

I just realized I got the title backwards.

So yeah standards are more efficient?

dB Zac

correct, it takes HP to run the pump on an automatic. Also, the reason you don't have to let your foot off the gas to shift is because AT shift such a way that allows this but is not as efficient. Now, if you are talking about acceleration, they are more efficient then a getrag by shifting fast and enabling the turbo to stay spooled up. In everyday driving, the robbed HP and increased heat and friction do you a disservice