I buried this in a previous post, sorry but I thought I would bring it out in its own to get better exposure. I have a lack of power on my 66 428. It has stock heads, 1.08 4100 carb, Edelbrock Performer 390 intake. It is a 4speed. THe cam is a Lunati 30505 - 228° intake, 235° exhaust at 050 with a 0.536 lift, 106° lobe sep. Seems awful weak for a 428. The original dizzy that was in it showed no mechanical advance when I mapped it up to 3500. Put a differnt dizzy in it, 13L supposedly recurved, but I got only 10° total by 3500, has stock log manifolds. My planned changes are a set of factory cast iron long headers (car is a 7Litre Galaxie), can change the intake to a Holley Street Dominator, degree the cam and see if I can get the mechanical advance to somewhere around 36° total by 3krpm. I also have an edelbrock 750 carb I can put on it. Do you think these mods will wake up this sleeping big block?
The motor was rebuilt by its previous owner, The pistons used were FED 354P40. I assume that means the engine is 0.040 over bored. I dont know what compression they are.
