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Its more important to look at the torque vs. RPM curves here guys.
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Read my post again (did you read it to begin with?).
The numbers you quote for the 292 are from the later smog era; '64-'66 made 255ftlbs of net torque and had the added power higher up that the 4BT just doesn't. Yes, the 292 makes its peak power a little higher up; that's where GM intended you to run it.
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I have a hard time believing that even with the right gearing a 292 could push this (see below) down the road at 60 MPH. (This is what I found my 4BT in on my 1947 Ford diesel 1.5 ton project... and yes I drove it home.... the 4BT in my van replaced an existing 6.2L diesel and was mated to a TH 400)
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The 292 is/was a schoolbus/dump truck engine--you know that, right?
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If you've never owned/driven a diesel pickup.... your wasting your time trying to really describe... there two way different animals.
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TURBO diesel. Want to race my 454 spark-knocker with your 6.2?
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Take the big brother here guys... the 6BT 12 Valve... a 190HP, 440 ft-lb ft of torque engine.
Take a 6.0L LQ9 LS engine.... same torque, twice the HP.... it should be better right?
The 12V will pull the house down over the 6.0. At a slower speed yes... but at 30,000 lbs.... 12V 6BT diesel > 6.0L LS gasser
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Again, no. Wind the 6.0 up to the moon where it makes its power, and it'll out-pull the diesel. You think the diesel is more powerful because WHERE YOU ARE RUNNING IT AT IT MAKES MORE HP. And what do you mean
"At a slower speed yes..."? More power=faster on the planet I'm from.
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Differentiate what they really are guys...... 4BT: A puller meant for work.. and in stock form.... a MPG sipper if you have extremely favorable highway gearing. 292: An occasional puller capable of running out empty to highway speed without any issue or concern for gearing in most platforms.
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The 292 was never intended as that; it is a HD truck engine, designed for HD truck use. The (stock) 4BT is also a truck engine, but just a lamer one that is missing the entire top end of its powerband.
Just think of it this way; the 292 can spin 1,300RPM faster than a 4BT, right? So, 3,600/2,300=1.56. I'm just going to use that extra gear on this hill, and you can use that badazz 4BT grunt in high gear.
Now my 292 makes 400ftlbs @ less than 1,600RPM, and makes another 48HP @ 2,300RPM. 4BT isn't so bad anymore, is it? I can hold 3,600RPM as long as you can hold 2,300RPM.
Again, HP
where you run it is what makes the truck go.