Quote: ...The shop also indicated that if I did the big bore w/o cams I would likely be back soon for them...
Your shop spoke the truth. OEM 865 cams belong in a farm implement, not a BA or SM. The 790 motors don't need cam replacement. The 865 motors, however, really do, at least if you want them to perform all the way through the rev range, & even more so with a rev limit bump. One may not realize just how poorly 865 cams perform until they are replaced with something better.
