5.0 RWHP?
Cobra Member
Joined: November 30, 2009
Posts: 1,121
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From: South
on the 91 octane gas I predict 355-360RWHP. With 93 octane and and tune with no other mods I predict 375-380RWHP.
My 01 cobra laid down 280RWHP bone stock and my 03 cobra laid down 367RWHP bone stock; this is for comparison on stock Ford motors.
My 01 cobra laid down 280RWHP bone stock and my 03 cobra laid down 367RWHP bone stock; this is for comparison on stock Ford motors.
Cobra R Member
Joined: September 21, 2004
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OEM horsepower ratings are very subjective, lots of factors go into what numbers they rate them at beyond whatever number it actually makes. Just like the obviously under-rated numbers for the Termi motors.
I think it is a shame that Ford didn't go one step further in developing this new 5.0 motor and make it a direct injection motor. They could have raised the compression even higher, on the order of 12.5:1, and probably could have been knocking on the 500 HP door.
I think it is a shame that Ford didn't go one step further in developing this new 5.0 motor and make it a direct injection motor. They could have raised the compression even higher, on the order of 12.5:1, and probably could have been knocking on the 500 HP door.
no probably not
the 5.0 DOHC direct injected 11.8:1 in the is-f only makes 4 more hp
Mach 1 Member
Joined: September 23, 2008
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Regardless of the dyno numbers, I think you're gonna see '11 GT Manuals trap about 110 mph in the 1/4 mile (mid 12's) and '11 GT Automatics trap about 108 mph in the 1/4 mile (high 12's). Trap speeds are a better indicator of rwhp than a dyno any day.
Dave
GTR Member
Joined: February 18, 2010
Posts: 4,990
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From: S.E. Texas
Here's a nifty HP and E.T. calculator if you want to play with the numbers.
http://www.allfordmustangs.com/Detailed/619.shtml
_________________
Mach 1 Member
Joined: January 18, 2010
Posts: 562
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From: KC, MO
MPH numbers like those, it should be 12.0's, so it isn't getting off the line hard enough.
Here's a nifty HP and E.T. calculator if you want to play with the numbers.
http://www.allfordmustangs.com/Detailed/619.shtml
_________________
Here's a nifty HP and E.T. calculator if you want to play with the numbers.
http://www.allfordmustangs.com/Detailed/619.shtml
_________________
GTR Member
Joined: February 18, 2010
Posts: 4,990
Likes: 1
From: S.E. Texas
GTR Member
Joined: February 18, 2010
Posts: 4,990
Likes: 1
From: S.E. Texas
Using that calculator and using a wet weight with driver of 4000 lbs. and plugging in 412 HP puts the E.T. @ 12.42 and MPH @ 109.68
Of course that is with good traction and gearing, say the optional 3.73's and some drag radials or slicks.
Of course that is with good traction and gearing, say the optional 3.73's and some drag radials or slicks.
Bullitt Member
Joined: November 17, 2007
Posts: 218
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Domestic automakers quote curb weight which means a full tank of gas. 3600lbs + driver - a little gas should produce a more accurate result. Try 3750 or so.
Legacy TMS Member
Joined: May 16, 2004
Posts: 5,206
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From: Bristol, TN
Agreed, .85 = Internet Correction Factor. I find it laughable that if say a 2011 GT modded to put out 1000 hp at the crank would lose 150hp through the same drivetrain that abosrbed only 61hp.
Of course the flip side being all those bone stock 500+ hp at the crank from the factory LS3's GM is producing.
Of course the flip side being all those bone stock 500+ hp at the crank from the factory LS3's GM is producing.
Legacy TMS Member
Joined: May 16, 2004
Posts: 5,206
Likes: 18
From: Bristol, TN
V6 Member
Joined: February 9, 2004
Posts: 52
Likes: 3
A 1 point raise in compression is good for about 3% gain in output. This gain decreases as compression ratio increases though. Figure a 4% gain at 12.5:1 and you only get a gain of 16.5hp for a total of 428.5hp...that's a long ways from 500.
GTR Member
Joined: February 18, 2010
Posts: 4,990
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From: S.E. Texas
It doesn't matter, it's not going to happen.
Bullitt Member
Joined: September 9, 2009
Posts: 490
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From: North Carolina
I have read that Ford engineered the 5.0 so that DI can be added in the future, and it probably will. But I am plenty happy with 412, as thats almost as much as the competitiors with many more cubes.