ok, so from the top, I have a 95 grand cherokee, 4.0, 1750,000, rebuilt by me, bored .040 over, new cam, crank, pistons, rods, rings, head, pretty much the only thing thats completely stock is the block. Anyway, runs great for the most part, until it heats up. I live in NM where its 100 degreees...