Stock Block 1260s

what blocks do you need to do this and do you have some avaiable to buy exchange or with a core charge.

Any block that says 1015cc on it. We have no exchange blocks. We do only the customers blocks.

We can also do them with 1260 J pistons for those wanting to use a J head. (you run a .040 spacer under the block)

Jay

Besides cost, is there any advantage of running one block over the other? I have both, and was wondering which would be better to build. I have always been worried that a big block would not cool as well as a stock block. Am I wrong?