Rear Blocks
Record Breaker
Joined: Mar 2006
Posts: 1,513
Likes: 2
Axle wrap has nothing to with u-bolts. It's the torque of the axle being absorbed by the leaf spring. There's no such thing as block height limit on avoiding axle wrap. As long as the vehicle is SOA then it's capable of axle wrap. The only way to avoid it with leafs is to be SUA or have a ladder/anti-wrap bar. All of it is relative to an increase in traction, hp/torque, moment length (height of spring vs block), and stiffness of the spring on when axle wrap WILL occur.
B. 2" blocks aren't going to get this rear end to wrap any faster then no blocks, unless the rear end is shot to begin with. Technically, your right though, sure the more space you put between the axle and the springs the easier it is to cause the wrap but, I was saying generally, I don't think a small block is going to cause any negative effects on this truck.
Veteran
Joined: Oct 2006
Posts: 383
Likes: 1
From: Raleigh, NC
A. No one said anything about U-bolts preventing axle wrap. I will say it again: The key is, getting good strong U-bolts when using blocks.
B. 2" blocks aren't going to get this rear end to wrap any faster then no blocks, unless the rear end is shot to begin with. Technically, your right though, sure the more space you put between the axle and the springs the easier it is to cause the wrap but, I was saying generally, I don't think a small block is going to cause any negative effects on this truck.
B. 2" blocks aren't going to get this rear end to wrap any faster then no blocks, unless the rear end is shot to begin with. Technically, your right though, sure the more space you put between the axle and the springs the easier it is to cause the wrap but, I was saying generally, I don't think a small block is going to cause any negative effects on this truck.
However, I disagree that this truck wouldn't get any wrap with a block. In most of our applications, I agree that it won't have any evidence of negative effects. But I guarantee if you gun it and get traction there is axle wrap
i guess it will be a surprise if i do get them though! Thanks for all the info and help guys, appreciate it 
Record Breaker
Joined: Aug 2007
Posts: 1,041
Likes: 0
From: Central NY
I'm considering 1.5" blocks and a 1.5" front kit once I own my truck (4 more payments!!!).
I'm not worried about axle wrap. I get awful wheel hop right now with a hard launch in 1st gear. My buddy's Titan will do the hoppity-hop at 20-30 MPH if he punches it. It's the nature of leaf sprung stick axle vehicles. I believe GM's nowadays have asymmetrical leafs, where there is more length behind the axle than in front of it, to help reduce the effect.
I'm not worried about axle wrap. I get awful wheel hop right now with a hard launch in 1st gear. My buddy's Titan will do the hoppity-hop at 20-30 MPH if he punches it. It's the nature of leaf sprung stick axle vehicles. I believe GM's nowadays have asymmetrical leafs, where there is more length behind the axle than in front of it, to help reduce the effect.
Record Breaker
Joined: Mar 2006
Posts: 1,513
Likes: 2
I will take your word on that, as I have really never truly inspected this particular truck to see if it actually happens. One more reason to use an add a leaf and deal with the stiffer ride I suppose.
Champion
Joined: Feb 2010
Posts: 3,686
Likes: 0
From: Greenfield, Wisconsin
Is there anything wrong with a stiff ride though? Is stiffer safer when it comes to suspension? I ask because my front end is pretty rock hard, and Im looking at stiffening up the rear now.
To compare, my truck is almost just as bumpy as it was with the stock struts at 116k miles. The difference is the truck goes with the road, not just bouncing by itself after going over a bump. The braking and turns are awesome though, so I actually dont mind the sacraficed comfort .... it is a truck after all.
To compare, my truck is almost just as bumpy as it was with the stock struts at 116k miles. The difference is the truck goes with the road, not just bouncing by itself after going over a bump. The braking and turns are awesome though, so I actually dont mind the sacraficed comfort .... it is a truck after all.
Is there anything wrong with a stiff ride though? Is stiffer safer when it comes to suspension? I ask because my front end is pretty rock hard, and Im looking at stiffening up the rear now.
To compare, my truck is almost just as bumpy as it was with the stock struts at 116k miles. The difference is the truck goes with the road, not just bouncing by itself after going over a bump. The braking and turns are awesome though, so I actually dont mind the sacraficed comfort .... it is a truck after all.
To compare, my truck is almost just as bumpy as it was with the stock struts at 116k miles. The difference is the truck goes with the road, not just bouncing by itself after going over a bump. The braking and turns are awesome though, so I actually dont mind the sacraficed comfort .... it is a truck after all.
For those of you who have installed the rear blocks, is your setup like mine with the brake line? (outlined in yellow) Does it get in the way at all and will the lift put any strain on it?
brakeline.jpg
brakeline.jpg
. I too a curious.