Compression Ignition Addict
Join Date: Aug 2007
Location: New Martinsville, West Virginia
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a single block that is the right size, not 2 stacked together... the tend to twist, as is seen in the pictures, and can pop out, and then major issues result... nothing better than the whole rear end coming lose as you are driving down the road!
Some people have welded them together, but welds tend to crack, as most blocks are cast, and hard to weld.
One of the lift blocks is stock, it has the 'tab' on the side for the over load bumper to hit, but with the added lift, it's not going to hit it anyway, and you have air bags to take it's place, in a fasion. So, replacement with the proper size block that is one peice is your best bet. If you are not farmilular with lifts and their issues, I would take it to a reputable suspention/truck shop, one that installs and/or sells lifts, and have them give it a good once over...
'99 E350 DRW Stahl 11' util box van, 7.3 PSD, stock. 138k SOLD
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'84 Chevy K-30, 6.2L TD, woods/trail beater. 141k