5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

3.90s

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Old May 17, 2007 | 12:31 AM
  #1  
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Default 3.90s

any MANUAL tranny guys running these? i no one or two of yall auto ppl use them. but im askin for manual guys... what i need to know is, how tall of a tire you run, and what rpm you cross the traps in... thanks
Old May 17, 2007 | 12:33 AM
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Default RE: 3.90s

Is this gonna be like your tire threads? I'm gonna slap you if I see you this weekend!!!
Old May 17, 2007 | 12:34 AM
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Default RE: 3.90s

why waste your money. If your going to run 3.90's just run 4.10's
Old May 17, 2007 | 12:36 AM
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Default RE: 3.90s

na man wont be like my tire threads, i promise

and 4.10s are putting ppl on a stock tire thru the traps at 6100, i want it slightly lower, hopefully in the 5500 range...
Old May 17, 2007 | 12:38 AM
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Default RE: 3.90s

I think I was trappin somewhere around 5400 - 5800 w/ 3.73's and a 26" tire.
Old May 17, 2007 | 12:39 AM
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Default RE: 3.90s

ORIGINAL: dimebag

na man wont be like my tire threads, i promise

and 4.10s are putting ppl on a stock tire thru the traps at 6100, i want it slightly lower, hopefully in the 5500 range...
Exactly! You want to be at the top of fourth at the end of the track.
Old May 17, 2007 | 12:41 AM
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Default RE: 3.90s

really pro? damn... buddy of mine traps either 6xxx in 3rd, or bottom of 4th w. his 3.73s


and yes i want to be at the top, but not 6100 where im not making power, power dies off around 5500 as you know, id rather go thru there, then higher... worse comes to worse ill get 4.10s and a slightly taller tire if need be
Old May 17, 2007 | 12:42 AM
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Default RE: 3.90s

ORIGINAL: dimebag

really pro? damn... buddy of mine traps either 6xxx in 3rd, or bottom of 4th w. his 3.73s


and yes i want to be at the top, but not 6100 where im not making power, power dies off around 5500 as you know, id rather go thru there, then higher... worse comes to worse ill get 4.10s and a slightly taller tire if need be
thats because your buddy isnt running a procharger
Old May 17, 2007 | 12:48 AM
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Default RE: 3.90s

makes sense, but theoretically, w. the same gear and tire, shouldnt both cars have the same rpm at =places? i no pro would get there much faster, but wouldnt the rpm be the same? obviously not, explain....
Old May 17, 2007 | 12:51 AM
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Default RE: 3.90s

ORIGINAL: dimebag

makes sense, but theoretically, w. the same gear and tire, shouldnt both cars have the same rpm at =places? i no pro would get there much faster, but wouldnt the rpm be the same? obviously not, explain....
technically... no

its the same as why one person can run 100mph in the 1/4 and only pull 14.1 seconds. and someone else will run 13.5



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