I really like your idea. I would add though that after you invest the money in rebuilding and truboing a 6.2 you could probably pay for a decent 5.9 cummins 12v with a tranny and have more power. A fresh turbo'd 6.2 is still a good idea also.
beater_k20 said:you study these things every damn day... along with an hour of english, and hour of math, an hour of science, and an hour of history. a couple weeks ago you were in some high school auto class, and you thought you were ready to take your ASE Master test. now suddenly you get into some diesel class, and you become diesel god overnight. i've been turning wrenches since i was 11 years old, that's right about the time you were getting into preschool. furthermore, i've got 4 years of extensive training in general automotive and light diesel, plus the 13 years that i have been turning wrenches on my own stuff. come back in 10 years, then maybe you can brag about your experience now.
dirtwarrior17 said:I said hp is what pulls hills not that i was a diesel god.
My uncle owns his own semi so i do know that. cylinders the size of paint cans. Semis do not hold their speed at all going up hills.... in fact i can remember passing semis with no trailer going up hills at about 45 mph when the speed limit is 65 and that was half way up the hill.
they need the torque to get them moving not hold speed that is called hp...I understand that you say your trying to teach me something but that goes against everything i have ever learned about motors. For example a crf 450 makes tons more torque than a cr 250 but they will be almost completly even when goin up resonably steep hills.... you only need torque at slow speeds. If you were going from a ded stop the 450 would kill the 250 but i don't know of any highway hills like that.
I said hp is what pulls hills not that i was a diesel god.
My uncle owns his own semi so i do know that. cylinders the size of paint cans. Semis do not hold their speed at all going up hills.... in fact i can remember passing semis with no trailer going up hills at about 45 mph when the speed limit is 65 and that was half way up the hill.
they need the torque to get them moving not hold speed that is called hp...I understand that you say your trying to teach me something but that goes against everything i have ever learned about motors. For example a crf 450 makes tons more torque than a cr 250 but they will be almost completly even when goin up resonably steep hills.... you only need torque at slow speeds. If you were going from a ded stop the 450 would kill the 250 but i don't know of any highway hills like that.
dirtwarrior17 said:I said hp is what pulls hills not that i was a diesel god.
Semis do not hold their speed at all going up hills.... in fact i can remember passing semis with no trailer going up hills at about 45 mph when the speed limit is 65 and that was half way up the hill.
they need the torque to get them moving not hold speed that is called hp...I
You forgot to add that you also passed a test to work on a NASA space shuttle. So you passed a test to run a back hoe. I DO run a back hoe, a Case 580 Super E to be specific, around the ranch and for higher when I have the work. You think you know a lot because you have read something but what happens in the real world is not always the same as the say it is in the classroom.dirtwarrior17 said:No, my rop heavy equip class is right next to the auto teacher and the auto teacher and heavy equip sub for each other... i already passed my ASE test for operating backhoes at 16 years old. I too have been turning wrenches at 11 but i was also welding, ad rivoting on houseboat hulls, working brakes, scheers, drill presses, and making my own skate rails. I said hp is what pulls hills not that i was a diesel god.
You're uncle has my uncle beat, he doesn't own a truck.....but my dad and I do.My uncle owns his own semi so i do know that. cylinders the size of paint cans. Semis do not hold their speed at all going up hills.... in fact i can remember passing semis with no trailer going up hills at about 45 mph when the speed limit is 65 and that was half way up the hill.
they need the torque to get them moving not hold speed that is called hp...I understand that you say your trying to teach me something but that goes against everything i have ever learned about motors.
We have 14 semis and over 20 sets of trailers. I DO work on semi trucks on a regular basis and work around them everyday, not just reading about them. If HP was the answer then CAT, Cummins, and Detroit would build shorter stroked, higher revving engines that could produce tons of HP..they would if that was most important. THey build low RPM, high torque engines because that is what gets them moving and KEEP them moving up hills. Let me narrow this down to an LD pickup for you. A 2005 Dodge 3/4 pickup cummins equipped makes 325HP and 610 ft lbs. It's Gross vehicle weight rating is around 17K IIRC. I would bet that a new '05' can pull almost any hill at the speed limit at full GCWR. Let me show you how much difference the weight vs. power ratio is in a heavy truck. It would take the dodge over 4.5 times the power to pull 80K like how it pulls it's GCWR of about 17K. That pencils out to 1,462.5HP and 2,745 ft lbs of torque to pull a GCWR of 80K like how it does 17K. Maybe now you can see why trucks have a harder time dragging 80K up a hill at full speed.Let me put this in gas engine terms for you. If HP was so important for towing than a 327 out of a Vette would have been used in lots of 3/4 and 1 ton Chevs, but instead they used torqueyer 350's, 400's and 454's that don't produce as much HP but more torque.



rjfguitar said:A 2005 Dodge 3/4 pickup cummins equipped makes 325HP and 610 ft lbs. It's Gross vehicle weight rating is around 17K IIRC. I would bet that a new '05' can pull almost any hill at the speed limit at full GVWR. Let me show you how much difference the weight vs. power ratio is in a heavy truck.
dirtwarrior17 said:who is that directed at?

You are 100% correct. I meant GCWR..... I didn't think an LD pickup broke the 20K barrier yet? I thought the ford was at the top currently with 19.2K?84_Chevy_K10 said:GVWR on my new SRW 1 ton truck is 9,900 lbs. Not sure where you got 17,000 lb GVWR number but it seems to me you're confusing GVWR with GCWR, AKA, Gross Combined Weight Rating. Your little 3/4 ton truck's tires are screaming...they're overloaded by a factor of 2x or more when the weight of the pickup is 17k+.![]()
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GVWR = Gross Vehicle Weight Rating......for a SINGLE vehicle, not a vehicle combination. Not sure on the 3/4 ton Dodges as I wasn't interested in one but I'd say 8800-9000 is reasonable. The dually is 12,000 lb GVWR. GCWR depends on axle ratio but is typically 21,000-23,000 depending on transmission and axle ratio.
beater_k20 said:heavy diesels are high on torque, and low on hp. that is, they can move alot of weight, but they cannot maintain the speed, hence the slowing on the hills.
rjfguitar said:You are 100% correct. I meant GCWR..... I didn't think an LD pickup broke the 20K barrier yet? I thought the ford was at the top currently with 19.2K?
dirtwarrior17 said:???????????????? maybe you should buy one of those clue things......
WTF is this? SHOW ME WHERE IT SAYS TORQUE IS NOT IMPORTANT IN ANY OF MY POSTS. YOU ACCUSE ME OF DANCING AROUND STATEMENTS THAT YOU CAN'T FIND BECAUSE THEY DON'T EXIST... I HAVE SAID IT TONS OF TIMES. TORQUE GETS IT MOVIN HP KEEPS IT THERE. QUOTE ME PLEASE.... DEAR GOD QUOTE ME.
YOU GUYS ARE ARGUING WITH ME ABOUT SOMETHING I NEVER SAID.