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10-16-2012, 05:47 PM
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#1 |
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Hmm...Something Clever
Drives: Blac on Blaq on Blak 2012 Camaro LS Join Date: Dec 2009
Location: Charleston, SC
Posts: 413
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Rwhp
So I'm at a company training today and a coworker asks me how much HP does my car get. I reply 323. He says no what's the rwhp... I've searched google with no definitive answer anyone got an answer?
 
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10-16-2012, 05:49 PM
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#2 |
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Account Suspended
Drives: Eve - 2011 Camaro 2SS/RS Join Date: Apr 2012
Location: Fairfield, OH
Posts: 11,814
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It's how much HP actually gets put to the ground...you're probably looking at about 250-270 HP.
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10-16-2012, 05:49 PM
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#3 |
       
Drives: 2011 5.7L Tundra Double-Cab X-SP Join Date: Mar 2012
Location: Birmingham, AL
Posts: 2,031
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10-16-2012, 05:49 PM
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#4 |
Drives: 2010 ss. 1990 RS the faster one. Join Date: Jan 2011
Location: Orlando
Posts: 549
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323 is your engines horsepower at the crank. Hp measured at the wheels will be less.
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10-16-2012, 05:56 PM
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#5 |
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Retarded One-Legged Owl
Drives: 2010 Black Camaro 2SS Join Date: Oct 2008
Location: San Antonio, TX
Posts: 9,745
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It varies from car to car. The only true way to know what YOUR car does at the wheels is to dyno it
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10-16-2012, 06:47 PM
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#6 |
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Hmm...Something Clever
Drives: Blac on Blaq on Blak 2012 Camaro LS Join Date: Dec 2009
Location: Charleston, SC
Posts: 413
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Thanx guys for the replies. I'm now more than ever set on adding mods
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10-16-2012, 08:40 PM
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#7 |
 
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The rule of thumb is (i.e. generally accepted approximation) is
Manual trans: RWHP = FWHP * .85 (15% drivetrain loss) Auto trans: RWHP = FWHP * .80 (20% drivetrain loss) where FWHP is flywheel horsepower (power the engine produces) and RWHP is rear wheel horsepower (power the rear wheels put to the ground) RWHP = FWHP - drive_train_losses
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Black 2SS ordered 1/4/2010, received 2/19/2010
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10-17-2012, 02:17 AM
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#8 |
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LFX is not the average V6
Drives: 2011 Mustang GT 5.0 Join Date: Mar 2012
Location: Las Vegas, NV
Posts: 314
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i thought FWHP was front wheel horsepower.
what is BHP? is that front wheel horsepower (talking about FWD cars of course)
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White 2011 Mustang 5.0 - 4/13/13--current
Silver Ice Metallic 2012 Camaro 1LT - 7/27/12--4/13/13 - traded in for mustang Victory Red 2012 Camaro 1LS - 3/27/12 - 7/10/12--totaled POS 2011 Mazda 3 - traded in for camaro 2001 Ford F-150 - traded in for mazda |
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10-17-2012, 02:27 AM
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#9 |
Drives: 2011 2ss/rs Join Date: Nov 2011
Location: Canada
Posts: 1,431
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Bhp is brake horsepower aka engine horsepower so ls3 is 426 bhp. Fwhp is usually referred to as front wheel horse power, awhp is all wheel horse power.
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10-17-2012, 08:57 AM
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#10 | |
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Quote:
Engine HP (or crank HP) is referred to as FWHP by muscle car guys. Ricers, however, use FWHP (front wheel hp) because RWHP doesn't really apply. FWHP is the engines net HP with exhaust manifolds, power accessories, and emissions equipment. example: http://www.stangnet.com/mustang-foru...ersion.655892/ BHP is different... it is the gross engine HP without power steering pumps, water pump, etc. The listed ratings of cars (i.e. 426 for LS3 Camaro) is flywheel HP, not BHP.
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Black 2SS ordered 1/4/2010, received 2/19/2010
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10-17-2012, 10:04 AM
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#11 |
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Founder - Michigan FBody
Drives: 1994 Camaro LT1, 2012 Camaro 2SS/RS Join Date: Jun 2008
Location: New Haven, MI
Posts: 2,598
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Seems like the 15% and 20% loss for the manual and automatic transmissions respectively is still about 10-15hp off. Appears our cars lose quite a bit from crank to the wheels with automatics having about 23-25% loss.
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2012 Camaro 2SS/RS L99 - "Zooma"
1994 Camaro LT1 A4 - "Red Alert" - v6-to-LT1 Swapped Cruiser; Cammed, Stalled, Enjoyed "Gone But Not Forgotten" 2016 Camaro 1LT A8 - "Elmo" 2014 Camaro 1LT M6 - "Cherry Bomb" 2012 Camaro 1LS M6 - "Clifford" Michigan FBody Association http://www.mifbody.com/ |
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