My 67 FB started out as a 390, but with the 428 CJ crank,428 CJ heads, and forged 30 over 410 pistons, it's now a 416. It runs warm to hot depending on the timing and outside temp. A cooling system in top shape is a must. I went with a moderate cam (Compcams XE262) so that helps. My best mileage to date has been 13 MPH on a 3hr road trip from Lake Isabella back to Ontario. Plug changes are a pain, parts are expensive and tougher to find compared to a small block. But the looks on peoples faces when you pop the hood makes it all worth it.
Last edited by James67; 01-27-2014 at 11:38 PM.