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Why are manual tranny trucks hp lower?

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  #21  
Old 01-03-2010, 01:05 PM
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Im just saying if a 900hp+ truck cant break the driveline thats including street,drag, and daily drivers a 350hp truck isnt goin to either.
 
  #22  
Old 01-03-2010, 01:19 PM
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could it be that they dont need the same power to pull the same load due to the different gearing? most semis only have 350hp but are geared out the ****. just my .02
 
  #23  
Old 01-03-2010, 01:42 PM
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Originally Posted by kjpcummins
Im just saying if a 900hp+ truck cant break the driveline thats including street,drag, and daily drivers a 350hp truck isnt goin to either.
Yeah, but a couple trips down the track vs thousands of miles are two different animals. I guarantee that a 900 hp truck will break some things in less than 500 miles of solid sled pulling or drag racing. You think a stock driveshaft and rear end would handle 900 hp through 8,800 sled pulls or 2,000 runs down a strip? Sure it works for a little while, but even the 500 horse guys break stuff long before that many runs.

---AutoMerged DoublePost---

Originally Posted by powermad
could it be that they dont need the same power to pull the same load due to the different gearing? most semis only have 350hp but are geared out the ****. just my .02

The automatics are rated with higher towing capacity. In the real world, they both can tow the same, but again if we had Chryslers warranty data, I'm sure we would see some trends that might shed some light on why they do what they do.
 

Last edited by 94Matt; 01-03-2010 at 01:42 PM. Reason: Automerged Doublepost
  #24  
Old 01-03-2010, 02:03 PM
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I know many daily driven trucks at or over 700hp with stock oem driveline from all generations of dodge cummins that tow and dd with no failures. A daily driven truck doesnt come close to how a competition vehicle strains driveline. So if a competitions vehicles are breaking driveline a daily driven one isnt goin to either. What do i know i read diesel power magazine.
 
  #25  
Old 01-03-2010, 02:18 PM
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So you would be comfortable guaranteeing a stock rear end for 8,800 sled pulls behind 900 horsepower? Remember that's only 500 miles, should hold up right?

I'd be willing to bet on average a stock drivetrain wouldn't last through 50 sled pulls at 900 horsepower, or even at 500 horse for that matter. That's only about 3 miles.

Not uncommon to have a loose carrier on a dana 80 in a second gen at around 100,000 miles with stock power (245 at most)
 
  #26  
Old 01-03-2010, 02:32 PM
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Originally Posted by kjpcummins
I know many daily driven trucks at or over 700hp with stock oem driveline from all generations of dodge cummins that tow and dd with no failures.
Guess you didnt read this. These trucks have well over 50k at this power level. Dodge even has come out and said the reason for the detune was because of the clutch and cost. I dont see how driveline would have anything to do with it otherwise the autos would be detuned also.
 
  #27  
Old 01-03-2010, 03:15 PM
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I give up . You are right.
 
  #28  
Old 01-03-2010, 05:29 PM
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Originally Posted by 94Matt
I give up . You are right.
You were outlasted Matt. The power of persistance, tenacity of a bull dog, and so on.

What is it you do for money in Wyoming? I drove across the state once from Denver to the Tetons...a long ride on a high plateau.
 
  #29  
Old 01-03-2010, 07:55 PM
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Originally Posted by DixonPeer
You were outlasted Matt. The power of persistance, tenacity of a bull dog, and so on.

What is it you do for money in Wyoming? I drove across the state once from Denver to the Tetons...a long ride on a high plateau.

I wish I could tell you I did something cool and noble, but alas, I am a lowly business owner (HVAC). Also been dabbling in a little bit of custom fabrication, would like to test the waters a bit more before getting in too deep with that idea though.
 
  #30  
Old 01-03-2010, 09:11 PM
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Originally Posted by 94Matt
So you would be comfortable guaranteeing a stock rear end for 8,800 sled pulls behind 900 horsepower? Remember that's only 500 miles, should hold up right?

I'd be willing to bet on average a stock drivetrain wouldn't last through 50 sled pulls at 900 horsepower, or even at 500 horse for that matter. That's only about 3 miles.

Not uncommon to have a loose carrier on a dana 80 in a second gen at around 100,000 miles with stock power (245 at most)
I agree no stock rearend would hold up to 8,800 sled pulls
 


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