Do I need new center pins for 1.5" block?

???

 

no, but you will need new u-bolts

 

You'll need centerpins & Ubolts....

 

Centerpins, why?

 

Because the stock ones are cut off short to clear bump stops for one & 2: adding a 1.5" block is going to leave the pin about an inch short & lastly you should always replace centerpins if removing (but not a deal killer if you don't)

 

Also you can easily make your own, just get a 3/8" fine thread grade 5
(or better) bolt, about 4"-5" long with a nylock to match, just grind the corners off the head of the bolt & it fits perfectly into spring perch on axle

 

Help me out here. Why would you even touch the center pins if all you are doing is adding a lift block? The block goes between the spring and the axel, so there is no need to take apart the spring. I can see it if your doing a add a leaf. What am I missing here?

 

What lift blocks do you have?

I know its been many many years since I've helped someone install lift blocks - but we never messed with the centering pins. The lift block sits on top the head of the pin (hole in block) and has a nub on the other side that sits in the spring plate. Longer Ubolts ...YES. But you never had to touch the centering pins.

 

My bad confused block with leafs..... HEY I'm old Goddammit !! Its a senior moment (or is it movement ??)

its a Ubolt thing.....nevermind.....