GQ SWB - Bad vibration at 10 - 15kph

[rockpool]

Hi guys
Just got myself a SWB Maverick Diesel, it is standard except a 2" lift and 33" Mud Terrains.
When taking off at slow speed or driving at slow speed at around 10 - 15kph there is a bad vibration come through the vehicle and quite noisy. It goes away above that speed and can't be felt/heard any other time. As I'm new to these cars just wondering if anyone might have an idea what it could be?

Cheers

[timmay556]

Usually caused due to the high angle in your tailshaft (common on lifted shortys) you will probably need to purchase gear box spacers that go between the cross member and where it bolts to your chassis rail on each side.

[threedogs]

have you broken an engine mount, stick it in neutral and give it a decent rev . Does the gear stick move heaps
check with the bonnet up and see if engine wants to climb out of the engine bay

[rockpool]

Doesn't appear to be engine mount as there wasn't any movement when I revved it, it does seem to be the lift height as suggested by Timmay, so I'm looking at replacing the lift kit in it anyway as it looks more like a 3/4" lift and rides like crap, so I'll take it back down to the normal 2" lift and see if it goes away.
Thanks for all your help guys.

[90mav]

Gearbox spacers are an easy thing and cheap to make yourself. Just loosen the crossmember bolts and lower the box and put spacer in between to see how much you need. You may need to get longer boltsx8 and buy a heap of big flat washers to pack it down. Lots cheaper than a set of spring and a half hour job at best, esp if you have a rattle gun!

[MudRunnerTD]

See this thread for some info that will be of use to you.

Why-does-your-car-vibrate-after-giving-it-a-lift