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Thread: transmission/ gearing help

  1. #1
    Senior Member EXPERT BUILDER
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    transmission/ gearing help

    im thinking about running 4.10's with a th 350 in a 76 camaro i live 15 miles from town and want a cruiser its 55-60 all the way there will i be OK without it whining too much and what about interstate ?

  2. #2
    Senior Member RACING JUNKIE fla1976's Avatar
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    What size tires?

  3. #3
    Senior Member EXPERT BUILDER
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    29x12.5x15

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    Senior Member RACING JUNKIE mytmouz's Avatar
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    It will suck after a while. I have 295/50's on my v-8 blazer daily driver, which is a tad over 27 inches tall, and 3:73's. With the t350, I was a tad over 3000 rpm in drive @ 55 on the interstate, and everyone was passing me like I was tied to a post. I ditched the t350 for a built 700r4, and cruise 70'ish @ 2200 rpm...
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  5. #5
    i`d say your good , 29 " tires at 55 its gonna be around 2500 rpm. i`d personaly go w/4.56 `s and that would keep it just under 3grand but i guess it depends on if your driving it every day etc, etc, etc.

  6. #6
    Senior Member RACING JUNKIE BEAST477's Avatar
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    It will depend a lot on your converter. My '66 Nova I had with 31" tires and 4.56 gear was 3100rpm at 55mph. So there are variables. Your setup will be a little different, but now you have a few choices.
    BEAST477






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  7. #7
    Senior Member RACING JUNKIE oldandtired's Avatar
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    Let's just pretend you will drive 65 MPH - because you know you will!!

    A manual trans car @65 with 29 tall tire is 3095 RPM.

    Add converter slippage and you're cranking it up.

    I agree with mytmouz, go with a 700R4.
    Dave
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    "All that is necessary for the triumph of evil is for good men to do nothing" Edmund Burke

  8. #8
    Senior Member EXPERT BUILDER
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    what kinda off converter do you guys suggest with 4.10 or 4.56


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