Because the crank in my pickup is trashed . And from the looks of the camshaft this isn't the first time my son has run it low/out of oil (a long and sordid tale) . This is my '86 GMC Sierra 1500 , 305 H motor and a 700R4 trans with
2.73:1 rear axle . I'll be taking parts to a shop for stuff I can't do , bore .030 over , check the heads out and a/n . And the crank ... the rod journal for #1 measures 2.071" , spec is 2.0988 - 2.0998 . It might clean up at .040 under , I don't know . Have to see what the guy at the machine shop says . Which brings me to a question - what about welding up a journal and regrinding ? I had one very bad experience with a welded-up journal back in the early 80's , a $700 rebuild went 35 miles before it ate the rod bearings . I ain't going down that road again .- posted
2 years ago