Would This Be Overkill?

Discussion in 'Technical' started by Jason M, Mar 26, 2004.

  1. Jason M

    Jason M Hibernatin for the Winter

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    C4 Transmission -- Freshly built, race clutches, race prepped, reverse valve bode, brand new 3500 stall converter, scatter shield included

    Would this be overkill for a mild 302 for the street/strip?
     
  2. Jason M

    Jason M Hibernatin for the Winter

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    or this one

    fresh c4 manual VB 9, ATI4500conv, JWsfi plate $1500firm?


    btw Canadian money
     
  3. igo1090

    igo1090 Member

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    for street? you didn't mention what rear gears, but go with 3500 stall for the street. maybe less if more street than strip. be careful with the rev man vb on the street. many of them have no engine braking in first gear which is not a major problem if you know how to treat it. it means if you accelerate in 1st gear and let off the gas, the trans freewheels. if you step on the gas again, nothing happens until eng rpm reaches where you let off the gas and then hits hard on the converter. some people think its cool to do this because it really hits hard. but its not cool when the front drum over revs and explodes, or does other serious internal damage. if you start up in 1st, shift to 2 and then you can do what you want. with a rev man you will mostly drive in 2nd and 3rd on the street, anyway. put maybe 3.55 gears in it. think about less stall on the street with a mild motor. i would go about 2500 to 3000 stall tops. forget the 4500 on any mild engine. its a nice setup, but you would need heads, about a 250 deg @ .050 cam with maybe .600 lift, victor jr intake, healthy rear gears and very BIG tires/slicks.
     
  4. don graham

    don graham MCG State Rep

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    i would think the 3500 might be a tad high for the street, but if your going to be doing any other mods you'll probably be beefing it up shortly anyway. :) i have a 3500 in mine for the strip and i think it is pretty mild.
     
  5. Jason M

    Jason M Hibernatin for the Winter

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    just two local transmissions I found for sale...... thinking about getting the first one
     
  6. Cleaver

    Cleaver Member

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    I agree with Don and igo. The 3500 might not be too bad with the right gear. I've run several cars with 3000 converters on the street. The 4500 is overkill for mild motors. Of course there are some sick horsepower freaks out there that consider the motor igo1090 describes as "mild"

    A 3500 converter behind a mild 302 will likely stall out before it ever gets to 3500 RPM. If you can find out the brand of the converter, you may be able to call the maker and find out what engine combination they used to come up with their advertised stall. Maybe someone here on the board can explain further (I still consider a converter a black mystery box of sorts), but from experiece in my Chevy days with Vega convererters- the more torque you feed one - the higher the stall. A stock Vega converter behind the stock 141 4 banger stalls out at maybe 1200 RPM. The same converter behind a mild 350 will easily go over 2500 RPM. The same converter behind a 454 or Caddy motor can add another 1000 rpm.

    Cleaver
     
  7. Camtemple

    Camtemple Member

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    I'd agree the 3500 is a high stall, and for a street/strip car you'd want to go lower then then probably 3000 or lower. That does sound like a strong tranny though, so I'd consider buying that one if you could get a decent deal on it and buy a lower stall converter for it. By the sounds of it that tranny will be fairly bullet proof if your not going to put it under an extreamly high ammount of horsepower and torque.
     
  8. Jason M

    Jason M Hibernatin for the Winter

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    so it would be a good deal then..... I need to redo the transmission in my car anyway and I happened to find this one.... I have not changed mine since I placed the 302 (former 250) in there and I know its not gonna last forever.... so I would be alright buying it but going with a smalller stall converter?

    anyone have the c-4 rebuilt in there own car? how much am I gonna be looking at?
     

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