Anyone had this problem in the past and knows of a fix please let me know. Was installing a starter on my 400 and when tightening the bolts the entire threaded area on the block just kind of crumbled and fell off!! I wasn't torquing on it or anything, it just $@# broke right off the block. Here's what I am thinking of doing to fix it. I bought a helicoil, and I have this can of welding paste (Kind of like JB weld on steroids) Now in theory, I should be able to use this stuff to mold an area on the block where the threads USED to be, insert the helicoil and be good to go. Do you all think it will work? Thanks, Rich If it don't fit, force it.