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Re: Extended flat torque curve [Re: hemienvy] #3021895
03/08/22 12:57 PM
03/08/22 12:57 PM
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Posts: 4,489
northern,Ohio,USA
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Clanton Offline
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Clanton  Offline
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northern,Ohio,USA
I posted my info to show 1 way without having mega cubes forcing 2x the air in an iron head port with stock cubes.My cr is about 17/1 with boost so I use 110 fuel where the big cub/stroke will have pump fuel a lot of times and a long stroke.Thank you for letting me play.


GOTBOOST!New improved with Victor heads.
http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/
Re: Extended flat torque curve [Re: hemienvy] #3021997
03/08/22 05:16 PM
03/08/22 05:16 PM
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Posts: 136
Dallas, TX
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440Brian Offline
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440Brian  Offline
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Dallas, TX
The question I have is does that make it a better choice for a bracket or Super category car?

Re: Extended flat torque curve [Re: 440Brian] #3022020
03/08/22 06:48 PM
03/08/22 06:48 PM
Joined: Jan 2003
Posts: 19,369
Las Vegas
Al_Alguire Offline
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Posts: 19,369
Las Vegas
Originally Posted by 440Brian
The question I have is does that make it a better choice for a bracket or Super category car?


Im in the process of building one currently to run brackets but mainly .90 racing. I have done .90 stuff with a flat torque curve and a peaky engine. Cant say one is definitively better than the other. But this time I am building a bigger engine than the last time I went .90 racing. So we shall see. Illpost the results of this engine compared to the last one that was more "peaky"


"I am not ashamed to confess I am ignorant of what I do not know."

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Re: Extended flat torque curve [Re: Al_Alguire] #3022023
03/08/22 07:04 PM
03/08/22 07:04 PM
Joined: Jan 2003
Posts: 6,392
nielsville, minn.
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quickd100 Offline
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nielsville, minn.
I wish I knew how to post pictures. My 605 Street Hemi's torque curve goes 750 ftlbs@3400 and climbs to 818@4818 and holds 750+ to 5900.

Re: Extended flat torque curve [Re: 440Brian] #3022033
03/08/22 07:24 PM
03/08/22 07:24 PM
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Posts: 4,489
northern,Ohio,USA
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Clanton Offline
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Clanton  Offline
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northern,Ohio,USA
Originally Posted by 440Brian
The question I have is does that make it a better choice for a bracket or Super category car?
I believe the longer tq avg is more forgiving on the shift point


GOTBOOST!New improved with Victor heads.
http://www.enginelabs.com/mopar-big-bloc...t-of-necessity/
Re: Extended flat torque curve [Re: hemienvy] #3022121
03/08/22 10:23 PM
03/08/22 10:23 PM
Joined: Jan 2003
Posts: 31,045
Oregon
A
AndyF Offline
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Joined: Jan 2003
Posts: 31,045
Oregon
My 470 dry sump engine had a big notch in the torque curve. The more we modified that engine to make peak power the bigger the notch in the torque curve got. Never worried about it much since the goal with that project was peak power but it was interesting.

On the flip side, we were testing a 498 inch BB Chevy today and it had a nice shallow dome type of torque curve and the power curve looked great with a nice smooth slope and then it held flat right at 800 hp for almost 1000 rpm. So that guy is going to be able to pull half way down the track behind a big flat power curve. I've never seen a BB Mopar with standard port, or MW ports build a curve like that. My guess is that it has something to do with the size of the port but I don't know for sure. There isn't anything else between the two engines that is super different other than the cylinder heads.

Re: Extended flat torque curve [Re: Clanton] #3022334
03/09/22 02:03 PM
03/09/22 02:03 PM
Joined: Oct 2007
Posts: 4,207
New York
polyspheric Offline
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New York
the longer tq avg is more forgiving on the shift point
This^^^
More tolerant of the wrong axle, or PG


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