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2004 to 2008 F-150 and Mark-LT
4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs.

View Poll Results: What engine do you have?
4.2 0 0%
4.6 56 26.17%
5.4 157 73.36%
Other 1 0.47%
Voters: 214. You may not vote on this poll

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  #1  
Old Sun, October 11th, 2009, 10:30 AM
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Quote:
Originally Posted by bustintheirazz View Post
I checked mine, I am getting 7.63 for my 0-60. Im running a custom level 2 and have 33" Load range E. Does anyone know how to convert your tire size to the (mm) on the gryphon? When I do my conversion of 33" to mm I get 838.2mm. Something that I am missing?
Sure - the 838.2 is your tire's diameter in millimeters. You need the circumference, so multiply that by pi, which gives you 2633.3 mm. But then, deduct some for "squish" (often about 3%) so multiply by 0.97 and you'll have 2554 mm, which is the size I'd try.

- Jack
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  #2  
Old Sat, December 5th, 2009, 02:53 AM
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If at all possible, use the manufacturers website to determine the "Rev per Mile" rating of the tire. Then to convert to millimeters, use this formula...

1609344 / Rev per Mile = Tire Circumference in mm

That helps eliminate any guesswork.
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  #3  
Old Tue, February 8th, 2011, 05:04 PM
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4.6 here. Haven't yet tested the 0-60.
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2008 Ford F-150 2WD STX 4.6L V8.
Mods: 285/60/18 Nitto tires. 18/9 MM wheels. Magnaflow catback SI/DO exhaust. Gotts mod. Gryphon CS (custom tuned). Performance air filter.

Want: CAI(aFe? ). efans. 4:10 gears. Throttle body spacer. New custom tune/s. Under drive pulleys.
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Old Fri, February 11th, 2011, 03:18 PM
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Embarrassing!

Gotts mod, performance air filter, Magnaflow performance exhaust, Custom tuned Gryphon CS(87 Performance). 12.3 second 0-60. Sad
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2008 Ford F-150 2WD STX 4.6L V8.
Mods: 285/60/18 Nitto tires. 18/9 MM wheels. Magnaflow catback SI/DO exhaust. Gotts mod. Gryphon CS (custom tuned). Performance air filter.

Want: CAI(aFe? ). efans. 4:10 gears. Throttle body spacer. New custom tune/s. Under drive pulleys.
Last edited by LonestarROB; Fri, February 11th, 2011 at 11:25 PM.
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  #5  
Old Sat, February 12th, 2011, 05:48 PM
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Ouch! Are you sure your tire size is correct? That seems VERY slow even for the smaller 4.6 Triton. Idk, but it my '97 F150 ran low 8's with just dual exhaust, K&N air filter, and B&M shift kit. My truck I have now was running 7.56 0-60 before the latest mods and tuning. Haven't been able to test it out with the new custom tuning, efans, gears because of coil pack issues. But soon, very soon. I just hope I am not disappointed after all the $$$ put into it.
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Old Sat, February 12th, 2011, 07:35 PM
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Quote:
Originally Posted by hampsterzone View Post
Ouch! Are you sure your tire size is correct? .
Tire size is correct. Been telling y'all my truck is a dog.
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2008 Ford F-150 2WD STX 4.6L V8.
Mods: 285/60/18 Nitto tires. 18/9 MM wheels. Magnaflow catback SI/DO exhaust. Gotts mod. Gryphon CS (custom tuned). Performance air filter.

Want: CAI(aFe? ). efans. 4:10 gears. Throttle body spacer. New custom tune/s. Under drive pulleys.
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