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  1. #21
    Join Date
    Sep 2012
    Location
    San Diego
    Posts
    256
    Country Flag: United States

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    For low cost effective rear suspension, I find adding an adjustable height rear pan hard bar to be very effective. I have one on my car, and have installed them on several other cars. The ones that autocross have found that adjusting the height, which is the roll center height, is very effective on controlling rear grip with varying surfaces. I have found for example, that in San Diego, I like my pan hard bar a bit higher than I like it at Fontana. Now, this is my biggest issue with a lot of the aftermarket suspensions, They do not have adjustable rear roll centers. I race against a lot of these suspensions and they do really well. I have modified a Detroit speed quadra link pan hard bar to be height adjustable. This made a dramatic change for the better on this cars over steering issues. Leaf springs are not ideal, after all they are horse and buggy technology. They can work well but never like a link/coil over. If you pan hard bar leaf springs, you need to either use rubber bushings or swivel bushings. Polyurethane, delrin, and aluminum are all to stiff and will cause excessive bind. For budget road handling suspension, I personally would do the pan hard bar, some lowering leafsprings, probably composite ones from Flex Form, and some single adjustable shocks from ridetech.
    71 maverick.
    71 comet in build process.
    i work at Current Auto Performance www.currentautoperformance.com. i also build the differentials for San Diego Gear and Axle.

  2. #22
    Join Date
    Sep 2006
    Location
    Southern Indiana
    Posts
    4,631
    Country Flag: United States

    Default

    Another note is using a 9in rear housing makes it easier to deal with and cuts some weight housing wise. A friend has installed a 1100 hp Nelson TT LS engine and was getting 10 bolt and 12 bolt breakage. so he did it 9in and found it held BUT the 9in really eats power so he talked to a friend who used to drag race and bought 4 9in center sections that used 12 bolt gears. POWER IS BACK. And he still gets swap ability for track days and breakage, which with braced 9in housing is no longer issue.
    And he added Moser axles for included durability.

    Lee Abel
    AFTERMARKET PERFORMANCE

    1977 Chevy Monza 2+2:Project "Cheap Trick"
    1978 C10 Long bed , On air and trailer puller
    2006 Buell Blast ,Just a bike to ride and for mileage
    1966 Caprice 4dr Sports Roof fact.327/now 350/SOON 454???? Project "II Old,,,ZERO BUDGET OR LESS CAPRICE!"


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