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Old 03-28-2007, 11:29 AM
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Leaf Spring Rebound Problems

HI, I need some help with a problem I am having with my replica of a 1957 Thunderird. It uses a 1976 Mustang II rear end and I just put new 76 Mustang leaf springs on it and new 76 Mustang rear shocks on it. Now it has too much spring rebound. I then bought some Strange Engineering adjustable shocks and with them adjusted to max, it still bounces too much. I weighed the car and the total weight is 2845lbs with 1375 on the rear wheels. I don't want to keep buying new shocks and hoping to guess right. Can someone tell me what shocks I need to control the rebound bounce?


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Old 03-28-2007, 11:57 AM
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Perhaps I'm the only one, but I'm having trouble understanding the problem. You say the car has "too much spring rebound" and then you say the car "bounces too much." I'll assume the latter is more descriptive and that the rebound travel isn't excessive. It's just that the oscillations are excessive after encountering a bump.

The Mustang shocks should certainly have put you in the ballpark. Are they mounted at the stock angle? But, with that type of car, you might be far more particular than the average Mustang owner.

I suppose you could get on the phone with a shock supplier and work something out. There's another interesting possibility: At that weight, you're closer to the Corvette of that era than the Thunderbird, so you could use the rear shocks for a '56 or '57 Corvette. Just realized something else: I think the '56 Corvette used fabric rebound straps to limit rebound travel. I could be mistaken. That might have been the '53 through '55 models.
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