Taller slicks and RPM drop

Discussion in 'Competition Camaros' started by wwest, Feb 9, 2016.

  1. wwest

    wwest Veteran Member

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    Oh hell...Im at around 550...lol.

    Im going to take a good look at wheel well space and make sure Ive got all I can get in there.
     
  2. vegas1974z28

    vegas1974z28 Moderator Staff Member Lifetime Gold Member

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    I run the MT stiff walls as well......at about 650 FWHP 3400 race weight
     
  3. mrdragster1970

    mrdragster1970 Veteran Member Lifetime Gold Member

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    The 29 x 10 might be the one.
    Your car might not like the stiff sidewall???
    They also have a 29 x 9, that will give you more spacing.
    Plus as mentioned, there is drag radials, maybe they have a model that fits.
    I've never used one and none of my buddy's use them.
    Our local track is a crap hole, and my buddy's don't want to deal with them.

    .
     
  4. mrdragster1970

    mrdragster1970 Veteran Member Lifetime Gold Member

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    Did you use a stiff and regular on the same combo???
    If the 60' changed, that would tell if one is better or they're about the same??


    .
     
  5. OldCamaroNut

    OldCamaroNut Veteran Member Gold Member

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    Converter slip/lock up affects rpm's a bunch. What gears are you running? If you look at my sig line you'll see my setup, and my car would trap at 6300-6400 rpm.
     
  6. Bobalos

    Bobalos Veteran Member

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    If you want to run a slick & are not sure about which type of sidewall to get, you can run it with a tube & then take it out if you want less sidewall. Now days, I think most folks are running the stiffer sidewall or putting tubes in them (giving you about the same). If it were me I would run the tube & make the car work with it.

    Bob
     
  7. wwest

    wwest Veteran Member

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    Oh Im running tubes!

    This is the only tire Ive ever run to be honest. I don't go to the track enough to burn through them, so they last a while.

    Im thinking 29x9.....

    OldCamaroNut.....this is creepy.
    We are running the same car...lol
    Same motor, intake, 950 Prosystems, Marvs old AFR 210s, solid roller .630, SRP flat tops, stock crank, 1/34 headers, COAN converter (4500 stall), Garage built turbo 350, 4.11 gears. I think my extra tenth comes from me being 100 pounds lighter. That's CRAZY.

    What tires were you running? If you are running 30's, that could be where the RPM is....
     
  8. mrdragster1970

    mrdragster1970 Veteran Member Lifetime Gold Member

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    I've seen weirder things happen, but with such a small engine and power I really don't see a 4500 converter being that inefficient???
    I have a 6900 stall with my 557" and I can see on the computer it's bad on the big end.
    I just don't care it's over 8000, it has good parts and the tunnel ram loves 8000 plus.


    .
     
  9. wwest

    wwest Veteran Member

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    OMG...lol
     
  10. Marv D

    Marv D Veteran Member Lifetime Gold Member

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    YUP,, I KNEW RPM was going to be an issue eventually. LOL

    I totally agree Wade,, keeping RPM down is the wiser move, but how...?
    Taller tire yeah,, but I'm not so sure I'd go to a narrower tire to accomplish it. Your doing a good 60 now,, Just keep in mind "What happens in the first 100 feet of the track COMPOUNDS down track" If you start giving up 60 ft to get RPM down I'd believe your going the wrong way.

    One solution may be changing wheel offset and mini-tub to stuff as much tire as you can in there. That's always been my solution but then... I have been known to take the easy (not necessarily the cheapest) way out on occasion.
     

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