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  1. #21
    Join Date
    Feb 2019
    Posts
    15

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    Thank you very much. Since I already have a Z06 that is set up for the track, I will lean towards the taller gear. I have a stock cam so torque is good at 1500rpm and the car will be be 700-800 lbs lighter than the donor car. I will look at the quadralink. I appreciate you taking the time to help. Your graph was a big help!

  2. #22
    Join Date
    Apr 2007
    Location
    Aurora, CO
    Posts
    320
    Country Flag: United States

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    Quote Originally Posted by c4racer2 View Post
    I hadn't considered the tire was so tall. But it is.
    I was surprised when I saw that 28" spec above so I checked and mine has 275-35-18 which is similar at 27.7" tall. 2" taller than the tires going on my 71, which is getting a T56 Magnum close ratio
    Not to say you are wrong, but.....
    A 275/35/18 is only 25.7" tall. I know this because I have been researching tires for months now. I settled on a 275/40/18 which is about an inch taller.
    Matt H.

  3. #23
    Join Date
    Feb 2019
    Posts
    15

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    Thanks for the chart-I appreciate the extra effort to figure this out. Knowing how we will use the car, the 3.50 makes the most sense. David, was your website and you have had great success in autocross. We are originally from Nebraska and have you heard of the Sandhills open Road Challenge in Arnold Nebraska? It is held every year in August. We also track at Pacific Junction Iowa or Hastings Nebraska-excellent 2.5 mile long track with a straight section where you can get close to 140mph.
    I looked at the Quadralink video and might lean towards DSE. Definitely a lot of work.

  4. #24
    Join Date
    Apr 2001
    Location
    Central CA USA
    Posts
    6,007
    Country Flag: United States

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    Jimi Day has been telling me about Sandhills, & Steve Rupp ran Bad Penny there once. Sounds like a cool event! They both say the people there are terrific.
    I drove the One Lap Camaro at Pacific Junction in 2010. Felt I wasn't driving the best lines in some of the middle turns.

    I don't know what your goals for the camaro are but going to some type of link suspension on the rear will help ride quality a lot. If you won't go over a 255 front tire, then a stock sub will work. Main drawback is lack of front tire room on a first gen. But if you are considering spending money on a new subframe, then you might as well get some extra tire room & move away from a stock sub. Speed Tech has their sub and a 3 link rear, and the Ride Tech rear suspension is very good, it's recently been re-engineered and improved.
    67 Camaro RS that will be faster than anything Mary owns.

  5. #25
    Join Date
    Feb 2019
    Posts
    15

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    Any advice on a 17” tire combo? I like to fill the gaps. Was originally thinking 235/45/17 on 17x8 and 275/40/17 rear on 17x9 but maybe I could go a little wider up front? Don’t want to tramline down the interstate. Max width I would go with would be a 255 front.

  6. #26
    Join Date
    Apr 2007
    Location
    Aurora, CO
    Posts
    320
    Country Flag: United States

    Default

    235/45/17 = 25.3" tall
    275/40/17 = 25.7"
    245/45/17 = 25.7"



    The 235 is just a touch shorter than the 275 you were thinking of on the rear. I don't think anyone would ever notice a difference of .4". If you consider the bulge of the tire on the ground that difference would look even smaller.
    I ran the 245/45 and 275/40 combo for years on my Camaro. Both sizes are easy to find matching tires for. As for the "tram-lining" on the highway? I had a set of cheap no name tires that were very square in profile. The car was all over the place on I-70. Switched to BFG's with a rounded shoulder in the same size and it was like driving a different car. All of the wandering was completely gone.
    Matt H.


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