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Old 07-28-2012, 07:47 AM   #1
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Rwhp vs. bhp

Im still new to sports cars and performance so could someone please explain the difference between RWHP vs BHP I know what they stand for I just don't understand why they are different. Please help
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Old 07-28-2012, 07:55 AM   #2
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BHP is basically what HP the engine produces if it were say, tested in a lab. No accessories hooked up to it, no transmission, none of that. The RWHP is the HP that is seen at the wheels and what is put to the ground. It is lower than BHP due to the losses from the transmission, various pumps on the car, friction etc.

Get it?
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Old 07-28-2012, 08:01 AM   #3
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Yea so when they say my car makes 323 (I think) it really doesn't?
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Old 07-28-2012, 08:06 AM   #4
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I'm assuming you have the V6? The engine would make 323 on a dyno, so technically, yes it does make that much. Does that much HP make it to the road? No.

For instance my 2SS A6....rated at 400 HP, I'm only seeing proably around 320ish to the ground. Automatic transmissions have a bigger loss than the manuals do.

All this is easily displaced with a few bolt ons though!
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Old 07-28-2012, 08:20 AM   #5
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Quote:
Originally Posted by Tayap79 View Post
I'm assuming you have the V6? The engine would make 323 on a dyno, so technically, yes it does make that much. Does that much HP make it to the road? No.

For instance my 2SS A6....rated at 400 HP, I'm only seeing proably around 320ish to the ground. Automatic transmissions have a bigger loss than the manuals do.

All this is easily displaced with a few bolt ons though!
Yea I have a v6, so why do autos lose more and also why does it lose the power anyways.
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Old 07-28-2012, 08:24 AM   #6
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http://autospace.co/did-you-know-wha...hp-bhp-ps-whp/
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Old 07-28-2012, 08:39 AM   #7
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Thanks that actually cleared up mostly all of my question.
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Old 07-28-2012, 08:40 AM   #8
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Does anyone know what the RWHP of a 2012 v6 camaro is stock?
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Old 07-28-2012, 08:57 AM   #9
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Each is different but I want to say around 260rwhp?
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Old 07-28-2012, 10:34 AM   #10
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Quote:
Originally Posted by Gman5001 View Post
Thanks that actually cleared up mostly all of my question.
Glad I could help
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Old 07-28-2012, 05:45 PM   #11
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Each is different but I want to say around 260rwhp?
Why doesn't Chevy advertise that?? They make it seem like it is so much more.
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Old 07-28-2012, 05:53 PM   #12
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Why doesn't Chevy advertise that?? They make it seem like it is so much more.
Everyone does that.
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Old 07-28-2012, 07:05 PM   #13
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Why doesn't Chevy advertise that?? They make it seem like it is so much more.
For the same reason they tell you the sticker price instead of grand total with fees, how much interest you'll pay at your qualified rate (until you get in the dark room in the back), its sells better that way.

Also, I thought the quick math on loss to the wheels was 15% for the auto and 20% for the manual.
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Old 07-28-2012, 08:36 PM   #14
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Also, I thought the quick math on loss to the wheels was 15% for the auto and 20% for the manual.
I believe that's a bit backward.

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