Hello all, I am new to the forum and looking forward to making some great friends here. Now to the meat of my post. I have recently purchased a 78 tolly 26. It is in good shape, very clean but, comes with the powertrain out of the boat. It was supplied with a (new, still in crate but no longer made) 8.1 L crusader, captains choice 400hp big block and a spanking new 1:1 V drive. Purchase price also includes a brand new oversize rudder. I've looked and looked, but can't find anyone who has swapped a 26 to a big block. I am struggling to find prop info. And if anyone knows anyone or is someone who has made the switch to a BB on a repower. This boat will be used to fish and hunt the Prince William sound area out of Whittier AK. Any and all help and advise is greatly appreciated!