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S/S spring noise ?

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I've had my '68 Coronet on the road for a few months now, yesterday heard a constant squeek noise coming from the rear. 456/457 S/S springs, new shackles and bushings. i found the noise coming from the right spring ( 456 ), i noticed there are no isolator pads between the leafs. There aren't even any holes drilled. The left spring is fine, has the pads. Looked at the 002/003 springs on my dart and they both have the isolator pads between the leafs. I was told by Mopar tech line that this is normal, they said they were designed for function and not concerned with noises. The guy also said some have them and some dont. Anybody come across this before ? Seems like a bullshit excuse for poor quality control to me ...
 
Super Stock springs are meant to be a high performance racing spring, so there would not be a concern for "spring noises". The normal springs you see, up to and including Hemi springs, are meant to be used on production cars, so noise elimination would be a concern.
 
Summit sent me a new 456 spring, again no pads between the leafs. Their customer service is awesome, they sent me a 457, it came today and has the pads. Looks like I'll be running2 left side springs, that noise would bug the **** out of me !
 
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