When im driving doing around 60 or higher when i release the gas to get to a steady pase I can feel vribration by my feet.

I was just wondering if that was my driveshaft doing that or maybe just the U-joints in my driveshaft??

 

Get underneath with it in park and twist the driveshaft and look for a loose u-joint, drive shafts can cause the problem to if at some point you hit it or damged it. Other things can be engine mounts,trany mounts,when they get worn they can allow vibrations to be felt that you would normaly not feel.

 

do you have a lift?

 

yeah i have a 5" lift

 

I have no SYE or shims under my leafs.

 

it sounds like you have to much lift for your drive shaft and slipe yoke. what happens is the more you lift it the further the driveshaft slides off the tc shaft. causing less contact between the two for normal driving. when you let off the gas the diffrences in rotation appear causing vibration. mine is doing the same thing. a sye will deffinetly fix this. it could possibly be fixed with the correct shims. i have 6 degree shims and this happens to me very rarely.

 

At 5" your slip yoke has started to max out on how much angle it will accommodate. Check to make sure it is not bottoming out. The least that you will need is to change to a YJ yoke. If you use an angle finder and get your angles right, then this is the cheapest fix, about $50 and easiest.

 

I would like to purchase a SYE but its out of my price range right now. How do I calculate the degree of shim to put in?