Transmissions and Drivetrain Need help with your trans? Problems with your axle?

torque? how do they get it?

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Old Mar 15, 2004 | 12:16 PM
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Wishmaster's87IROC's Avatar
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From: Winston salem, NC
Car: 1987 1SICIROC.....1999 TransAm
Engine: 385 HSR.....LS1
Transmission: 700R4 with Midwest 3400 2.4str...M6
Axle/Gears: SLP Zexel Posi unit 3.42's...3.73's
torque? how do they get it?

How do they come up with the TQ numbers for a stock car....if the HP #'s are flywheel HP....are the TQ #'s also flywheel? I thought TQ is measured at the wheels.....

for instants...my car came with 190HP and 295TQ from the factory ......are those reading both flywheel? or one is and the other is not...
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Old Mar 15, 2004 | 01:18 PM
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RB83L69's Avatar
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From: Loveland, OH, US
Car: 4
Engine: 6
Transmission: 5
They are both "measured" at the flywheel.

Torque is the thing that's actually "measured" to produce those "ratings". HP is calculated from that.

Torque is the twisting force that the engine can generate. HP is the rate at which it can generate that force, i.e. at what speed it can do work.
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Old Mar 15, 2004 | 02:45 PM
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From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Originally posted by RB83L69
They are both "measured" at the flywheel.

Torque is the thing that's actually "measured" to produce those "ratings". HP is calculated from that.

Torque is the twisting force that the engine can generate. HP is the rate at which it can generate that force, i.e. at what speed it can do work.
Correct. The ability to quickly make toruqe over time is HP. Your cars numbers are at the crank without any drivetrain loss.
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