Is their dyno off or did they have a stock beast truck? - Ford Powerstroke Diesel Forum
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post #1 of 16 Old 01-06-2012, 03:41 PM Thread Starter
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Is their dyno off or did they have a stock beast truck?

Ok I want to point out before you post I don't want to start a war or any **** talking. I'm just curious and was wondering why the stock truck make so much power to the wheels? Are those numbers off or was the dyno not reading correctly or what? Like I said if you are going to post negative stuff pls don't.

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post #2 of 16 Old 01-06-2012, 03:47 PM
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I've heard that the hot tune from H & S increased power by 250HP. So those numbers look about right to me. I can tell you that I've installed H & S tuners and the hot tune is just stupid amounts of power. You'll also get EGT's up real fast though.

I haven't actually had a truck on a dyno though, so who knows.
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post #3 of 16 Old 01-06-2012, 03:50 PM Thread Starter
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I've heard that the hot tune from H & S increased power by 250HP. So those numbers look about right to me. I can tell you that I've installed H & S tuners and the hot tune is just stupid amounts of power. You'll also get EGT's up real fast though.

I haven't actually had a truck on a dyno though, so who knows.
I'm not talking about the numbers after the mods I'm talking about the stock numbers. 306 rwhp and 648 rwtq. I mean the hp numbers might be on which I think is still too high, but the tq being a 648 stock. Come on the engine is rated at 650. So how are they getting those numbers to the wheels bone stock?


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post #4 of 16 Old 01-06-2012, 04:00 PM
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Ahh, gotcha. Well in that aspect it does seem a little high. I guess the variation could be because they say that those runs were done in 5th? I thought you needed to do it in 4th to get a 1 to 1 ratio for a true dyno result. I'm not sure how doing a dyno run in 5th would affect readings.

Again, I'm not a dyno operator, or a dyno expert so I can't really say.
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post #5 of 16 Old 01-06-2012, 04:03 PM Thread Starter
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I didn't see they ran it in 5th. That might made a difference.


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post #6 of 16 Old 01-06-2012, 04:09 PM
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Yeah, they have something on there about not being able to make it to redline with stock tuning and 40 inch tires so they had to do the runs in 5th. That seems like it would change dyno readings, but like I said, I'm no dyno expert.
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post #7 of 16 Old 01-06-2012, 04:13 PM Thread Starter
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Yeah, they have something on there about not being able to make it to redline with stock tuning and 40 inch tires so they had to do the runs in 5th. That seems like it would change dyno readings, but like I said, I'm no dyno expert.
Now I wonder if the after mod numbers are off then if they are running 40's? Eh screw it I don't care was just wondering about the stock numbers. Did now if our trucks were underrated from the factory.


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post #8 of 16 Old 01-06-2012, 04:48 PM
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In the tq rating they are under-rated for sure, not surprising to see 647 at the wheels honestly.

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post #9 of 16 Old 01-06-2012, 09:49 PM Thread Starter
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In the tq rating they are under-rated for sure, not surprising to see 647 at the wheels honestly.
Really? It seems all the dyno numbers I have seen which is very few, but stock 6.4L has always in been in the mid to upper 500 range.


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post #10 of 16 Old 01-07-2012, 04:14 AM
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I do not know much about this stuff but I was always taught that you lose a good bit of TQ in the drivetrain between the fly wheel and the tires and if you have an automatic trans your basically throwing TQ away because it is slipping whether you feel it or not.

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