I have a 1988 K-5 Blazer and have noticed that since I bought it there is a shake in the drivetrain during the first few seconds during accelatration.
It only happens when I first take off from a stop. If I ease into the throttle it does not happen. But, when I use 1/3 to full throttle from take off there is some kind of shake.
Could this be a trans mount or motor mount?
I have looked underneath to see if there is any obvious sign but do not see anything.
Any suggestions will help.
Thanks

 

check your ujoints, that would be my guess

 

I know that when I put it in reverse or drive from park it does hit pretty good which would make sense. I will pick some up and see if that does it.
Thanks for the advice!

 

no problem make sure you let us know how it goes! if it doesn't work im sure we can come up with some other ideas for you!