Stock rear wheel horsepower?
12-28-2006, 09:01 PM
#12
poptart tits
Join Date: Aug 2006
Location: Texas
Posts: 2,886
RE: Stock rear wheel horsepower?
ORIGINAL: FuriousGeorge
If you want to know details, an 05-07 Mustang GT's approximatecalculated drivetrain loss is between 17% and 18% according to sources that ranthe two different dynos.
30 x (100% - 17.5%) = 24.75rwhp. from adding a CAI and tune.
We have addressed it before, but if you were to put down 270rwhp on a stock dyno, doing the math gets you a crank horsepower figure of 327.27. Hence they are definitely underrated by Ford.
If you want to know details, an 05-07 Mustang GT's approximatecalculated drivetrain loss is between 17% and 18% according to sources that ranthe two different dynos.
30 x (100% - 17.5%) = 24.75rwhp. from adding a CAI and tune.
We have addressed it before, but if you were to put down 270rwhp on a stock dyno, doing the math gets you a crank horsepower figure of 327.27. Hence they are definitely underrated by Ford.
12-29-2006, 12:58 AM
#14
5th Gear Member
Join Date: Jul 2006
Location:
Posts: 3,834
RE: Stock rear wheel horsepower?
ORIGINAL: LanceH
I know total HP is 300 but does anyone know how much is making it to the rear wheels?
Also, I am thinking of getting the C&L CAI and SCT and tunes from brenspeed. I have read on here that this combo can be good for up to +30HP. I would assume that is total HP and not 30 to the rear wheels, correct?
Basically, I just want to know where I am now and where I would be with the CAI/SCT kit as far as total HP and rear wheel HP.
Thanks in advance for your help and replies,
Lance
I know total HP is 300 but does anyone know how much is making it to the rear wheels?
Also, I am thinking of getting the C&L CAI and SCT and tunes from brenspeed. I have read on here that this combo can be good for up to +30HP. I would assume that is total HP and not 30 to the rear wheels, correct?
Basically, I just want to know where I am now and where I would be with the CAI/SCT kit as far as total HP and rear wheel HP.
Thanks in advance for your help and replies,
Lance
12-29-2006, 11:07 AM
#15
2nd Gear Member
Join Date: May 2006
Location:
Posts: 340
RE: Stock rear wheel horsepower?
ORIGINAL: KTownGT
I coulda swore 98ls1 along with others were saying that th drivetrain loss for NEW cars is 12% for manuals and 15 for autos...
ORIGINAL: FuriousGeorge
If you want to know details, an 05-07 Mustang GT's approximatecalculated drivetrain loss is between 17% and 18% according to sources that ranthe two different dynos.
30 x (100% - 17.5%) = 24.75rwhp. from adding a CAI and tune.
We have addressed it before, but if you were to put down 270rwhp on a stock dyno, doing the math gets you a crank horsepower figure of 327.27. Hence they are definitely underrated by Ford.
If you want to know details, an 05-07 Mustang GT's approximatecalculated drivetrain loss is between 17% and 18% according to sources that ranthe two different dynos.
30 x (100% - 17.5%) = 24.75rwhp. from adding a CAI and tune.
We have addressed it before, but if you were to put down 270rwhp on a stock dyno, doing the math gets you a crank horsepower figure of 327.27. Hence they are definitely underrated by Ford.
If it were only 12% for a manual, that would mean that 300hp is our ACTUAL flywheel horsepower and our engines are not underrated. I have a feeling wherever you got those figures from just took a stock rwhp dyno figure and calculated loss off of the Ford "proclaimed" 300hp.
Most tuners estimate manual transmissions to be around 15% and most auto's to be 18-20%, but the only dyno sheet comparison I've ever seen was around 17.5% and I think it was an auto.
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