quick question

Discussion in 'General Maverick/Comet' started by Rob C, Sep 16, 2003.

  1. Rob C

    Rob C Member

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    74 Maverick 250 3spd auto 78trans am 400 "some" go fast goodies:)
    i was wondering what the redline is for a stock 250
     
    Rob C, Sep 16, 2003
    #1
  2. RabidCustoms

    RabidCustoms sic minds demand sic toys

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    one way to find out:D FLOOR IT!.....

    under load with an automatic if I remember right, approx. 4500 rpm.(thats approx) maybe with a manual 4600. thats not saying you cant spin it higher, chances are it wont do more.
     
    Last edited: Sep 16, 2003
    RabidCustoms, Sep 16, 2003
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  3. Rob C

    Rob C Member

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    74 Maverick 250 3spd auto 78trans am 400 "some" go fast goodies:)
    thats the thing when i floor it it wont shift into second unless i let off the gas. the tranny fluid does need to be changed but dont know if thats it. any suggestions?
     
    Rob C, Sep 16, 2003
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  4. mavman

    mavman Member

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    About 3500 RPM. They don't make much power above that, if any. Remember, most of the I-6 engines were torquey down low, around 1500-1800 RPM, then signed off at about 3000. Even the 300 "big six" EFI is like that.
     
    mavman, Sep 16, 2003
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  5. mavman427

    mavman427 has entered the building.

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    .

    Try adjusting your modulator valve, and if that doesn't work try adjusting your bands. If that doesn't work, you my friend, need a new transmission lol. Swap it out and put a 302 and a T-5 in it :).
     
    mavman427, Sep 17, 2003
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  6. comet dad

    comet dad Member

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    shift quick

    My trans (c-4 w/250 I-6) shifts out of first quick. I mean, you are not through the intersection and it's in second. I don't know if thats the way it should be, but thats the way it does. No tach, but shifts @ 10-15 mph. changed fluid and filter screen 1000 miles ago...........Robert:)
     
    comet dad, Sep 17, 2003
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  7. 71gold

    71gold Frank Cooper Supporting Member

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    robert, that is slow. i can turn a corner and before i get straight it is in third. 250 6 with c4. doing the 302 with built c4 as we speak...frank...
     
    71gold, Sep 17, 2003
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  8. Rob C

    Rob C Member

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    74 Maverick 250 3spd auto 78trans am 400 "some" go fast goodies:)
    could it just be i dont have a c4?

    on the 302 swap, i have an old 83-84 crown vic that has alowmilage 302, would that work?
     
    Last edited: Sep 18, 2003
    Rob C, Sep 18, 2003
    #8

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