Got embarrased by a Vette

[Taneras]

I have a GTPP 15 with full exhaust, airaid and livernois 6 speed and can take a stock C7 all day. Never raced it stock to stock but I can imagine it would be close right now I beat the C7 pretty hard. The C7 is lighter but with my mods I'm over 500 crankhp compared to 400chp.

C7's trap 118-120 stock. I doubt you'd even trap that, and you're especially not so far above that with your mentioned mods that you'd "beat the C7 pretty hard". If you've raced one and killed it, you beat the driver not the car. Get those headers in your sig and then you'll be in a position to mess around with stock C7's.

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[Sasuketr]

Its not the HP what is your Torque numbers? Torque gives you the acceleration, mustang having 60 lbft torque lower than a stock C7 will make it really hard to beat plus the weight of course! If it is a super long stretch though with that many HP you might be eventually catch him and pass him but the drag force on the mustang is higher too so you might need more HP than you think! Corvette has the absolute upper hand in the aerodynamics department!

 

[15GTBEN]

The .373's would have made a big difference in that scenario. Also being in the correct gear.

Lol at big difference. All else equal (mods, weight, driver skill) the 3.73 maybe up to a car quicker than the 3.55 from a roll at best.

Also this thread is dumb imo, OP raced vette in 5th gear. Even in the right gear he would have lost but being in 5th, not even a race to begin with.

 

[Taneras]

but the drag force on the mustang is higher too so you might need more HP than you think! Corvette has the absolute upper hand in the aerodynamics department!

This, by the time the mustang theoretically should start to pull the C7 back the extra drag will be an issue and will become more and more of an issue the faster you go.

Also gearing matters at that point too.

To beat a C7 pretty hard you're either going to drop a lot of money into your engine, go forced induction, or spray.

Not the GT350 will be another story. It'll lack in the TQ department but the extra hp and, hopefully, much lower weight should help it out.

 

[Livernois Motorsports]

Yeah... gonna need to see a video before I believe that.

Our MyCalibrator tune, cai, catback and headers on the GT PP is around 450 WHP...so he is 100% on the mark!

 

[Hack]

Its not the HP what is your Torque numbers? Torque gives you the acceleration, mustang having 60 lbft torque lower than a stock C7 will make it really hard to beat plus the weight of course! !

Umm, no - or at least not quite. You understand that gears multiply torque? Horsepower is a measure of the torque available through proper gearing. Power is really the most important measure for potential acceleration, not torque, because torque at the rear wheels varies based on what gear you are in.

Just look at a quarter mile calculator. Do they ask you to input torque and vehicle weight? No. Because torque won't tell you how fast the car can get through the quarter. HP will.

I know my explanation isn't the greatest, but hopefully it's helpful to you.

 

[SVTFreak]

Power is a calculated number based on torque. HP=TQ x RPM / 5252.

So your thought isn't exactly correct. They are hand in hand. A calculator just happens to use HP. It could easily use torque and RPM also to come up with same numbers.

 

[GT Pony]

Umm, no - or at least not quite. You understand that gears multiply torque? Horsepower is a measure of the torque available through proper gearing. Power is really the most important measure for potential acceleration, not torque, because torque at the rear wheels varies based on what gear you are in.

That's right ... it's HP and gearing which really counts. But a higher revving, lower torque producing engine is "trickier" to drive and make accelerate. The GT350 will be that kind of beast. More driver skill will be required to made it move out at it's full potential.

 

[GT Pony]

Power is a calculated number based on torque. HP=TQ x RPM / 5252.

So your thought isn't exactly correct. They are hand in hand. A calculator just happens to use HP. It could easily use torque and RPM also to come up with same numbers.

True ... but think of an Indy car as an example. They don't make much torque but they make tons of HP through RPM. They also use lots of gears to turn that HP into speed by multiplying the lower torque output from the engine to high torque at the wheels.

 

[Hack]

Power is a calculated number based on torque. HP=TQ x RPM / 5252.

So your thought isn't exactly correct. They are hand in hand. A calculator just happens to use HP. It could easily use torque and RPM also to come up with same numbers.

You are wrong because horsepower IS torque and RPM. SO you are using HP... and saying that you are not using HP.

The whole reason that HP is calculated, advertised and publicized - it's the important factor that tells you how fast a car will accelerate. Torque is incomplete - by itself it doesn't give you the whole picture.

 

[Sasuketr]

Well ofcourse its the balance of both Hp and Torque but torque is actually the measure in acceleration and horsepower is the energy and power that the engine is generating to overcome friction forces to reach top speed! So i would take an engine with a Torque number close to its HP number, any day . Gearing do play a huge role in putting you in the power band in a timely manner and keeps in the power band but you sacrifice top speed for that matter!

 

[w3rkn]

You are wrong because horsepower IS torque and RPM. SO you are using HP... and saying that you are not using HP.

The whole reason that HP is calculated, advertised and publicized - it's the important factor that tells you how fast a car will accelerate. Torque is incomplete - by itself it doesn't give you the whole picture.

Not necessarily so.

All gearing does is multiply TQ, right?. A engine's TQ characteristics, is how a car's gearing is decided to begin with. And a static TQ figure tells more of "the story" of how a car gets it's power than a static HP figure. Just look at Mustang GT350 vs Vette and their TQ curve.

Even on a powerband/dyno plot, TQ @ RPM always tells more of the story. More of the characteristic of the engine, than HP does.



I agree with you in that HP is a great quick reference to over-all power availability and/or capability. But I don't think it tells more of the story than TQ does.

 

[SVTFreak]

True ... but think of an Indy car as an example. They don't make much torque but they make tons of HP through RPM. They also use lots of gears to turn that HP into speed by multiplying the lower torque output from the engine to high torque at the wheels.

Exactly. The higher the rpm, the higher the HP. Or the higher the torque, the higher the hp. Or both but since torque is a relationship with rotating mass also, generally higher rotating mass means less ability to achieve higher rpm. More than one way to get HP (see equation)

You are wrong because horsepower IS torque and RPM. SO you are using HP... and saying that you are not using HP.

Dude, seriously? Look back at the formula I posted. It says HP ===== (equals or IS) Torque and rpm divided by 5252 (which is why ALL dyno graphs the two cross at 5252 rpm). So you are reiterating what I said then calling me wrong? Go back to sleep.

 

[GT Pony]

All gearing does is multiply TQ, right?. A engine's TQ characteristics, is how a car's gearing is decided to begin with.

Yes, gearing multiplies torque and gearing is used to manipulate the engines torque to be useful torque and HP at the rear wheels. But if the gearing is perfectly matched to the HP curve of the engine to make full use of the HP, then an engine with a higher HP number will always be the faster car - all other things being equal.

 

[Taneras]

Our MyCalibrator tune, cai, catback and headers on the GT PP is around 450 WHP...so he is 100% on the mark!

While those numbers are solid, and I mean no disrespect, that still places him at a lower power:weight ratio than the C7 vet (8.2lbs per hp vs 8.1lbs per hp). Sure, its certainly close enough to be a drivers race but you're not in a position to beat the vet "pretty hard".

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