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Thread: Gear question

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    Senior Member Cam99's Avatar
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    Gear question

    What would be approx top speed in 4th with 3.73 gears and T-5? Right now with the 3.08's I was topping third about 105ish at redline and I want to make sure I can hit at least 120-125 top of forth if I switch to 3.73's. Thanks.

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    FORMERLY BLACKSHEEP JETHRO's Avatar
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    Quote Originally Posted by Cam99 View Post
    What would be approx top speed in 4th with 3.73 gears and T-5? Right now with the 3.08's I was topping third about 105ish at redline and I want to make sure I can hit at least 120-125 top of forth if I switch to 3.73's. Thanks.
    Didnt I put 4.10's in your car? I can tell you that in fifth I was around 4500 to 5000 rpm going 140mph. Wasnt paying to much attention to the tach at that speed.
    Last edited by JETHRO; 04-22-2007 at 02:31 AM.

  3. #3
    Not Bad for 367 SAE RWHP Pure Stock's Avatar
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    Quote Originally Posted by Cam99 View Post
    What would be approx top speed in 4th with 3.73 gears and T-5? Right now with the 3.08's I was topping third about 105ish at redline and I want to make sure I can hit at least 120-125 top of forth if I switch to 3.73's. Thanks.
    129 mph with a 26" tall tire and 3.73's will put you approx. at 6,218 rpm (if your eliminating the 6,250 factory rev-limiter the 5/16" rod bolts are the limit :D )
    2011 Mustang GT, MT-82, 3.73's :

    BONE STOCK 12.223@115.18

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    Senior Member Cam99's Avatar
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    Quote Originally Posted by JETHRO View Post
    Didnt I put 4.10's in your car? I can tell you that in fifth I was around 4500 to 5000 rpm going 140mph. Wasnt paying to much attention to the tach at that speed.
    In my Mach yes, I'm looking at which gears to put in the 93. You still installing?

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    Senior Member Cam99's Avatar
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    Quote Originally Posted by Pure Stock View Post
    129 mph with a 26" tall tire and 3.73's will put you approx. at 6,218 rpm (if your eliminating the 6,250 factory rev-limiter the 5/16" rod bolts are the limit :D )
    129 MPH redline in 4th will work for me. I will be leaving the rev limiter in place for now.

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    FORMERLY BLACKSHEEP JETHRO's Avatar
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    Quote Originally Posted by Cam99 View Post
    In my Mach yes, I'm looking at which gears to put in the 93. You still installing?
    Yes I am.

  7. #7
    Senior Member coralcoupe1993's Avatar
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    Quote Originally Posted by Pure Stock View Post
    (if your eliminating the 6,250 factory rev-limiter the 5/16" rod bolts are the limit :D )

    lol
    87 GT
    93 Notch
    60 Country Sedan
    Fairlanes/Galaxies 59-68
    67 Contiental 4 door
    06 Powerstroke

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