[777stickman]

OK, so looking again at your other post, the only things you've done are replace the starter and cables and all was good before that?? So I'm thinking what "abaird" said about the starter pinion. Try loosening the starter mount bolts "just enough to get some wiggle on the starter" but not enough to make it real loose. Do the start thing and let us know what happens. The thing about replacement starters are the mounting flanges to the block are not always the same as the original and sometimes have to be "shimed" for a good pinion gear to flywheel mesh.

Let us know.