Sierra tramp

[gog]

Anyone have any tips on curing axle tramp on a Sierra?
Diff ratio is 3.62:1
Tyres are 235/40x17 on 8.5 rims
Dampers are Spax adjustable
Bushes and beam mountings are polyurethane
Apart from not pressing the throttle pedal so hard are there any mods?
Thankyou

[Zad]

Having replaced the bushes, I think my first move would be to check that none of them are loose and allowing the suspension to move around. Have you uprated the springs / lowered the car? It sounds counter-intuitive but hard springs can reduce the suspension's ability to follow the road. If all else fails, a thicker anti-roll bar may help.

[shirley temple]

Axle tramp? are you sure? what are the symptoms? a Sierra has Independant Rear Suspension, not a Live axle

check the prop center support bearing if you have a hammering noise and check the diff mounts to the subframe and the rear subframe mounts to the floor

Mark

[gog]

Have ordered an uprated diff hanger, from R&B Motorsport, hope this effects a cure!!