I have a vibration at higher rpms in every gearon my 87 notch, i thought it was the u joints but i cant get any play out of them. Do you think it is an out of balance drive shaft or is there something else that usually vibrates on these 5.0's, because my 91 gt does it too. Any help is appreciated.
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87 notch 5.0 5 speed, 70mm bbk tb, mac fenderwell cai, gt40 upper and lower (ported and polished), smog and a/c delete, dynomax mufflers, gt40p heads (port and polish in progress), and 91 GT under construction.
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87 notch 5.0 5 speed, 70mm bbk tb, mac fenderwell cai, gt40 upper and lower (ported and polished), smog and a/c delete, dynomax mufflers, gt40p heads (port and polish in progress), and 91 GT under construction.
My first thought and the most probable would be your tires. Possibly from being out of balance or from cuppage. For example, one of my vehicles had bad vibration right around 60mph. If I slowed down or speeded up it went away. The issue was the tires having some slight cuppage. When they wore out treadwise, I replaced them and now there isnt any vibration at all.
I thought that might be the case too, but it happens at an rpm range not a speed range. It also doesn't do it unlesss it is in gear. I will be changing tires and rims real quick here anyways.
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87 notch 5.0 5 speed, 70mm bbk tb, mac fenderwell cai, gt40 upper and lower (ported and polished), smog and a/c delete, dynomax mufflers, gt40p heads (port and polish in progress), and 91 GT under construction.
vibration?
