mattwright101

okay im at a loss
car has a massive rattle/vibration in the drivetrain at about 60+mph
new tires all balanced
driveshaft balanced and new u joints installed
just had the rear end done and 373's put in
i just cant find this vibration
nothing i seem to do ever gets rid of it
its getting violent!

mustangmike33

how many miles are on the car? have you checked the balancer behind the crank pulley?

AdderMk2

are you lowered at all?

HACKGT350

yes go question are you lowered and are you sure the rear was put together right?

mjr46

when did the vibration start?? after any one of the mentioned mods/ repairs??

domindart

does a driveshaft need to b balanced or is it that a dshft is balanced but will loose it w age?

mattwright101

okay
car is not lowered
its been doing this before all of the above
i did all this trying to fix the problem
the gears were done right by a buddy of mine owns a shop and has been doing it for 30 years
i have noticed that my balancer has slipped as i can no longer read my timing correctly, but if that was out of balance, wouldnt it trash my rotating assembly?
and it doesnt do it at low speeds... at all
only above like 60 and it gets worse when i let off the gass or put it in neutral to coast

AdderMk2

if you know that your balancer has slipped, why havent you repalced it?


i personally think your retarded if you dont fix it ASAP

mattwright101

yea. im gonna get on that. as soon as i get paid...
i just never figured that that would cause a rattle in the driveline cause it feels like its comin from under the car

mattwright101

so what all is required to change out the balancer?