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Anyone got torque curve graphs for 300 vs. 351?

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  #31  
Old 07-01-2011, 10:42 AM
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Originally Posted by 85e150six4mtod
Just not as much as a 351w....
True enough.
 
  #32  
Old 07-01-2011, 02:26 PM
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And if you like revving the heads off your 351 to maintain that greater torque, go right ahead... I'll get just a little less torque and stop at half the gas stations... at 2 grand the difference in negligible and the 300 does it with two FEWER cylinders. I'll re-gear or run a ZF and have enough torque to yank a house off its foundation and still have enough fuel to carry the rubble to the dump.
 
  #33  
Old 07-01-2011, 09:32 PM
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Originally Posted by greystreak92
And if you like revving the heads off your 351 to maintain that greater torque, go right ahead... I'll get just a little less torque and stop at half the gas stations... at 2 grand the difference in negligible and the 300 does it with two FEWER cylinders. I'll re-gear or run a ZF and have enough torque to yank a house off its foundation and still have enough fuel to carry the rubble to the dump.
Oh, and the 300 is lighter...so a plus offroad.
 
  #34  
Old 07-02-2011, 05:42 PM
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Originally Posted by ManfredVonRichtofen
Dude,trust me 300s can provide HP as well as more torque if you build them correctly. If not, they wouldn't be used in drag racing.
I think this prooves your point pretty well.

YouTube - ‪6 cyl ford out pulls big block chevy‬‏
 
  #35  
Old 07-02-2011, 06:20 PM
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I surely agree with 85 on that one, I have both a 300 in my 1985 and a 351 in my 1992 Bronco. It handles good has power but top end towing sucks , plus the fuel mileage is about the same as the 351 (nontowing) . Towing in city and 55mph roads is ok, TR
 
  #36  
Old 07-02-2011, 07:18 PM
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It looks like the Ford had a limited slip differential and the Chevrolet definately had an open differential. The Ford had better traction and that is why it pulled better, and not because it had more torque.
 
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Old 07-02-2011, 07:33 PM
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Originally Posted by greystreak92
And if you like revving the heads off your 351 to maintain that greater torque, go right ahead... I'll get just a little less torque and stop at half the gas stations... at 2 grand the difference in negligible and the 300 does it with two FEWER cylinders. I'll re-gear or run a ZF and have enough torque to yank a house off its foundation and still have enough fuel to carry the rubble to the dump.
Go back and read the links, especially the 1990 Ford brochure.

"Revving the heads off your 351...." Think the heads will pop off at 2800 rpm?

The 300 is just fine, but it doesn't outpower a 351w. If you read the OP's post he's looking for MORE lowend. Best I can figure at any given RPM the 351 is right close if not more in MOST cases, and add as little as 200 rpm and it beats the six.
 
  #38  
Old 07-02-2011, 07:54 PM
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In the end I realized it's just a gearing issue anyways. When I have it offroad in 4-lo, it's scary how much torque goes to the wheels.. so obviously, lower gearing would give me what I'm looking for.

Edit: I'm still sorta wanting a 300 though. I've decided I'm going to try and keep my motor running for a while longer (cheating soon-to-be EX takes all my money!) when the time comes I might seriously consider a built 300. I just feel like the 351w isn't a truck motor, it just has that feeling behind it. It's a pain to work on, even worse than the wide 400 in my 78', I can't get to parts I need to when its time to work on them.. things like the rear main and the oil-pan seal are such large jobs that it's something I only wanna do when I pull the motor. Then wanting to refurbish my heads, again, too much of a job on the 351w.. I don't care how well it runs, there wont be a day that goes by I don't pop my hood for something and the 351w is just too much of a pain.
It just doesn't match my driving style or how I expect a truck to feel when I hit the gas if that makes any sense...
 
  #39  
Old 07-02-2011, 08:05 PM
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I have heard of people doubling up their transfer cases for super gear reduction. There was a guy on this site a few years back who did it (he called his truck Superbeast and it had a 460 putting out some serious horsepower). I saw the how to in the archives years ago.
 
  #40  
Old 07-02-2011, 08:23 PM
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Originally Posted by ErrorS
In the end I realized it's just a gearing issue anyways. When I have it offroad in 4-lo, it's scary how much torque goes to the wheels.. so obviously, lower gearing would give me what I'm looking for.

Edit: I'm still sorta wanting a 300 though. I've decided I'm going to try and keep my motor running for a while longer (cheating soon-to-be EX takes all my money!) when the time comes I might seriously consider a built 300. I just feel like the 351w isn't a truck motor, it just has that feeling behind it. It's a pain to work on, even worse than the wide 400 in my 78', I can't get to parts I need to when its time to work on them.. things like the rear main and the oil-pan seal are such large jobs that it's something I only wanna do when I pull the motor. Then wanting to refurbish my heads, again, too much of a job on the 351w.. I don't care how well it runs, there wont be a day that goes by I don't pop my hood for something and the 351w is just too much of a pain.
It just doesn't match my driving style or how I expect a truck to feel when I hit the gas if that makes any sense...
Fair enough. The inlines are easier to work on--unless they are in a VAN!!! But even then, I can't imagine trying to work on a 460 or oil burner in a van.... My current brand x truck is an inline 4--LOTS of room to work on that baby....seems it could use another 100 lb/ft though....
 
  #41  
Old 07-02-2011, 09:19 PM
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A guy I wheeled with for a while here had two transfer cases in his Toyota. Thing has a tiny 4-cylinder on propane and had more than enough torque to pull itself around, fully caged with 44'' crawler tires up revines and up hills and everything else, fully locked all four wheels. I can't imagine the size axles he had.. I doubt the Bronco had as much torque as he did at the wheels and with an engine far less than half the size with a huge weight disadvantage.
 
  #42  
Old 07-02-2011, 09:55 PM
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I should just do what this guy did:

Untitled Document

i'd like that center console anyways, I hate the 1990s interior with a passion.
 
  #43  
Old 07-03-2011, 03:02 AM
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Originally Posted by 85e150six4mtod
Go back and read the links, especially the 1990 Ford brochure.

"Revving the heads off your 351...." Think the heads will pop off at 2800 rpm?

The 300 is just fine, but it doesn't outpower a 351w. If you read the OP's post he's looking for MORE lowend. Best I can figure at any given RPM the 351 is right close if not more in MOST cases, and add as little as 200 rpm and it beats the six.
I never claimed it did. I said I'll take the mileage and torque much lower in the rpm band and drive the 300 100,000 miles further than you ever will with the 351 before it needs overhauling. The point (which you missed by the way) was that the 300 does a helluva lot better developing and maintaining it's torque for many many miles more andmany gallons fewer than the 351.
 
  #44  
Old 07-03-2011, 09:22 PM
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I see your point, I had a 300 for many years. But "rev the heads off a 351w" compared to a 300 is just slightly overstated, dontchyathink?
 
  #45  
Old 07-04-2011, 12:12 PM
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Yeah that's just a little bit overstated and not terribly accurate either. High teens fuel milage is entirely possible with a 351, and there are lots of 351's out there with 300k or more on the clock so I don't see reliability being an issue either. Then factor in how cheap and easy(cam and headers) it is to get the kind of power(close to 400tq and 300hp) that a 300 couldn't approach with 3 times as much money, and it's no contest.
 


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