Thank you for the info. It will stay as a 216 because I'm building my truck for shows plus I'm running the origanal 4 speed unsynchronized tranny with reverse lockout and I'm not very good at double clutching so the extra power of a 235 or 261 I feel is a little less desirable until I have improved on my foot work. Plus as I said I will know the difference and even if most people don't it will drive me crazy lol. I know its a little odd to be worried about the oiling system when I'm comfortable enough with the fully unsynchronized tranny to run it but that's because at least on the tranny I have some control with what is happening and I have another transmission like it that is not so uncommon that I can learn on.