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Old 05-03-2006, 12:19 AM   #1
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need help

ok i need some help i am thinking of getting a 2003 mustang gt 1st how much horse power do they come with stock and how are they on gas right now i drive a ford lightning and its killing me
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Old 05-03-2006, 09:35 AM   #2
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Re: need help

a stock 2003 mustang GT has 260hp@5000rpms(ish) and 302tq@4000rpms the weight is around 3400lbs (ish) for a coupe and they use a T-45 manual transmission and a 3.27 rear gear ratior 8.8 rear end with a Tlok unit.

They generally get 21mpg to 20mpg in manual on average (city/hwy) this may be better but thats about what I would expect~ maybe 21-23. They run 245/45/17 inch tires on 17x8 inch rims stock and do the quarter in 14.2~ stock.

You could do exhaust, cold air induction, and underdrive pulleys with a good 87 octane dyno tune to up the gas milage on the gt~
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Old 05-04-2006, 12:47 AM   #3
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Re: need help

thanks man yea that truck is killing me don't get me wrong i love that truck but i love money also and i am in the process of becoming a cop so i need to savei think i might get a mach 1 that they are selling down here i heard those come with 300 stock hp is that true?
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Old 05-04-2006, 02:44 AM   #4
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Re: need help

I think it's 315... they have the old aluminum Cobra block in them. They're pretty quick little cars. But yeah, pretty sure it's around 315... maybe a hair more? if I'm wrong, it's ok, I'm drunk too... so yeah, might be a little confusion.
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Old 05-04-2006, 07:37 AM   #5
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Re: need help

I got around 25 mpg highway on average before my blower.
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Old 05-04-2006, 09:06 AM   #6
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Re: need help

mach motors are like 305hp and 320tq~ something like that. They seem to perform a bit better or at least even with 99-01 cobra mustangs.
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Old 05-06-2006, 05:52 AM   #7
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Re: need help

the t-45 trans was only used til '01 in the GTs.. after that they used the t3650 tremec trans.. very strong trans, a bit notchy (so takes some getting used to..) if I could find a mach 1 I'd get one in a heartbeat lol

in my GT I saw about 19 MPG around town (country town a lot of 50 MPH driving.. not all that many stop signs..) but I expect it wouldn't be much worse than that.. and with a bit of highway thrown in I usually averaged about 22 MPG

after shorty headers and an off the shelf aftermarket PCM tune I gained almost a full MPG as well - but have to run premium with the tune..
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Old 05-06-2006, 11:39 AM   #8
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Re: need help

im averaging about 22mpg with mine.
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