06-15-2004, 02:32 PM
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CC Member
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Join Date: Jan 2002
Location: Northern California,
CA
Cobra Make, Engine: -Sold- Contemporary 427S/C # CCX-3152 1966 427 Med Rise Side Oiler, 8v 3.54:1 Salisbury IRS, Koni's.. (Now I'm riding Harleys)
Posts: 2,567
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Do you have a photo of the rear suspension we can see? Is the rear suspension to Midstates specs? You say the driveline angle was checked at a shop what did they find?
Whos "limited slip" are you using? Was the car run in reverse without a load? (on a lift) What happened then?
Driveline phase should remain constant regardless of direction of travel. In your case it isn't. All things being equal my first impression is it has something to do with the rear suspension design and a phase change when the differential is loaded (unloaded) in the opposite direction of the typical, forward load.
This could mean the mounting points holding the suspension are changing. This could be why they can't find anything wrong at the shop and why I wonder what it does in reverse on a lift.
My second impression could be a weak or broken transmission mount. As you are aware reverse gears are lower than forward gears inducing greater stress and flex, especially up a grade, the greater the grade the greater the load, the greater the flex the greater the vibration.
Give us a photo clearly showing the 4 link we'll go from there.
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michael
A man that is young in years, may be old in hours, if he have lost no time. But that happeneth rarely. Generally, youth is like the first cogitations, not so wise as the second. For there is a youth in thoughts, as well as in ages... Sir Francis Bacon (1561-1626)
Last edited by SCOBRAC; 06-15-2004 at 02:54 PM..
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