Can you check my math???
Thread Starter
Melting Slicks
Joined: Jan 2002
Posts: 3,293
Likes: 79
From: Jackson MI
Can you check my math???
Ok the equation goes TQ=(HP*5252)/RPM right?
So if I'm running a 250 shot-o-nos on my 396 shooting it at 3000 rpm. I'm guestimating, on the low side I hope, the engine is making 200hp at that rpm. That gives us:
TQ = ((200+250)*5252)/3000 = 787.8 ftlbs of torque at 3000 rpm
Is this right?? That seems very high. Could this be causing some major tranny slippage? How do I get around it? Thanks guys, your help is appreciated.
So if I'm running a 250 shot-o-nos on my 396 shooting it at 3000 rpm. I'm guestimating, on the low side I hope, the engine is making 200hp at that rpm. That gives us:
TQ = ((200+250)*5252)/3000 = 787.8 ftlbs of torque at 3000 rpm
Is this right?? That seems very high. Could this be causing some major tranny slippage? How do I get around it? Thanks guys, your help is appreciated.
Le Mans Master
Joined: Oct 1999
Posts: 9,713
Likes: 3
From: Sachse Texas
Cruise-In I Veteran
Cruise-In II Veteran
Re: Can you check my math??? (mn_vette)
Sounds about right. I sprayed 200 on a dyno a long time ago and got 744 ft.lbs rear wheel. All of it was down low.
Safety Car
Joined: Sep 2003
Posts: 4,504
Likes: 0
From: Charleston SC
Re: Can you check my math??? (mn_vette)
Makes sense. Same amount of nos goes into the engine at any rpm so at low rpm each cycle gets a lot of it. ie unreal torque at low rpm fading out up top.
Le Mans Master
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
Re: Can you check my math??? (mn_vette)
Ok the equation goes TQ=(HP*5252)/RPM right?
So if I'm running a 250 shot-o-nos on my 396 shooting it at 3000 rpm. I'm guestimating, on the low side I hope, the engine is making 200hp at that rpm. That gives us:
TQ = ((200+250)*5252)/3000 = 787.8 ftlbs of torque at 3000 rpm
Is this right?? That seems very high. Could this be causing some major tranny slippage? How do I get around it? Thanks guys, your help is appreciated.
So if I'm running a 250 shot-o-nos on my 396 shooting it at 3000 rpm. I'm guestimating, on the low side I hope, the engine is making 200hp at that rpm. That gives us:
TQ = ((200+250)*5252)/3000 = 787.8 ftlbs of torque at 3000 rpm
Is this right?? That seems very high. Could this be causing some major tranny slippage? How do I get around it? Thanks guys, your help is appreciated.
Jake
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: Can you check my math??? (mn_vette)
Well, my 350 L98 is building 180 ft-lb of torque at 3,000rpm so your estimate may indeed be a little low.
Assuming that your 250-shot builds that chp across the RPM band due to a constant cylinder pressure adder, your math should be good.
Of course, the question here is does that 250-shot indeed stay constant across the RPM band???
Assuming that your 250-shot builds that chp across the RPM band due to a constant cylinder pressure adder, your math should be good.
Of course, the question here is does that 250-shot indeed stay constant across the RPM band???
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