I finally fired up my 429 roller in my 78 F-250 4x4. Here are the specs: 429 crank and block bored .030, D0VE-C heads ported by me, machine shop crack checked, installed hardened seats, 2.25/1.75 valves, Crane roller cam, Scorpion rockers, Edelbrock performer intake, recurved Duraspark dizzy and L&L headers. Right now Im running an Edelbrock 600cfm carb. Im using this for now until I get a 750 (Ive gone over budget and I knew the 600 was in good shape). It didnt take much to get her fired up. I dont have mufflers yet so its pretty loud. I dont hear any unusual noises and nothing is leaking. Ive got about 15" of steady vacuum at 1000 rpm so that seems good. Overall it was a smooth start up. I also added a Super Duty hydroboost brake setup and boy does that work great.