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Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Suspension - Brakes - Steering> Rough riding 39 Chevy
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Topic Review (Newest First)
08-12-2019 07:35 AM
39 Sedan Good deal See ya in a few weeks Maybe
08-11-2019 07:50 AM
39BC Hi

Did put the car up on the lift on July 26 as planed. Removed the next to the shortest leaf on both rear springs. Drove car around town seemed to help. Didn't take the car out on the open road untill yesterday, drove about 100 miles. What a difference the car road so much better no hard thumps like before. Thanks everyone who contributed to this thread. Look for my next thread about my steering. Untill then good motoring.

07-26-2019 10:18 AM
39BC 39 Sedan

Grayville, I 64 Illinois Indiana border. Sent you a private message yesterday.

07-26-2019 06:46 AM
39 Sedan Nice road in this state where? Where exactly is Southeastern IL just trying to figure out how close we are to each other.
07-25-2019 04:40 PM
39BC Yes I am still here I haven't forgot you guys and all the help that you have been. Haven't really done anything on the car since my last post. Car is going up on lift tomorrow. We will be looking at all of your suggestions. Contacted the company that I bought springs and shocks from. Was able to ascertain information on the shocks but couldn't get any kind of a spring rate on the leaf springs. Did make a 150 mile round-trip to a hamburger joint (Moonshine Store) on some of the finest roads that Illinois has, I am being facetious some of the roads were terrible. On the way back we stopped at a milkshake joint I told them to just throw all of the ingredients in the passenger seat I will make my own milkshake. Will keep you posted on what I find out thanks again for your helpful suggestions.

07-17-2019 06:35 AM
Originally Posted by 39BC View Post
36 sedan

Will grab a friend in the next day or two and check travel. Must admit this bump stop is all new to me.

Make sure itís a skinny friend! LOL!!
Not much room under there.
Iíve done the bounce test but I put a dab of grease on the bump stop. If thereís contact youíll see easily if thereís contact.
07-17-2019 06:30 AM
39 Sedan You might check your shock length as well. I have a sedan version and mine rode rough and bounced at times as well. I have either a nova or camaro rear end in it as well. I ordered new 3 way adjustable shocks for it. When they arrived i thought they were way to long until i actually jacked up car and did the measurements properly. Come to find out the shocks it had on it were almost 4" to short!! I installed the new shocks and sat them on the middle setting. Have not taken it on any long road trips but to a couple shows near by and so far i have to say ride is pretty nice and improved a 100 percent.
07-16-2019 09:41 PM
39BC 36 sedan

Will grab a friend in the next day or two and check travel. Must admit this bump stop is all new to me.

07-16-2019 08:42 PM
36 sedan Bounce the rear of the car to check the suspension's normal travel, have a friend measure the down travel and use this measurement to see how much clearance there is between the axle housing and the stops on the frame. The stops are designed to limit the excessive travel and prevent damage, under normal driving and road conditions the stops usually do not have any contact.
07-16-2019 08:06 PM
39BC 36 sedan

Thanks for your suggestion. How do I determine if the bump stops are engaging to soon.

07-16-2019 07:27 PM
36 sedan Check your bump stops on your rear end housing. Sometimes when the car is lowered the stock bump stops need to be modified. If the the bump stops engage to soon on a bump it can severely limit the axle housing's travel, which in extreme cases can cause the rear tires to loose contact with the pavement.
07-16-2019 06:55 PM
OneMoreTime Most likely it is your shock valving. If the shocks are too stiff you can get what you describe. Either a softer shock or adjustable shocks are in order. Also what are your spring rates..

07-16-2019 03:22 PM
Rough riding 39 Chevy

Would like to soften up the ride of my 39 Chevy business coupe. It has a Mustang II type front end, Chevy Nova rear end. Springs and shocks were purchased from a well known engineering company. Not sure if I can mention by name the companies that I've bought my suspension parts from. The ride is rough there seems to be no "floating", at times I almost feel like the rear tires are coming off of the road and bouncing. Will be glad to answer any questions.

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