Originally Posted by Bman427

If you decide to go with Darton sleeves make sure you find an experienced shop to install them. I had one of the first LS1 darton blocks and had nothing but nightmares with the block. I would call Darton and ask them who can do the install correctly. Personally I'll never use sleeves again.

I dont think sleeves will fix the issue anyway. I'm having deck stanchions machined above each chamber for additional strength. My shop thinks it will handle up to 30psi. It should be done in 6 weeks, I'll post some pics.

I would be interested in knowing what is needed to use a 3.8 block...