[Chaplin]

Originally Posted by Barry_R

The Edelbrock heads on a 428 will clear with a 2.200 intake valve and be OK with a 1.71 exhaust. It's cozy in there, but not a real problem. A 390 based engine will have issues with the exhaust valve before the intake - but I've done those with a bore notch.

If you choose the stroker kit - whether the 3.98 stroke, the 4.125, or the 4.250, I prefer to internal balance them. Means that the flywheel and damper are common 390/427 parts and are easy to find and service.

Dampers are kinda funny - the cheapest (but still seem OK) Professional Products Chinese ones are well thought out with FE pulley bolt spacing, an included single groove pulley, a universal FE timing pointer, and clear instructions. The definitely far superior quality ATI piece has Chevy pulley bolt spacing, cryptic instructions, no timing pointer, and is about 7 degrees off from a stock FE (You be making/modifying a pointer).

Flywheels are a match to your clutch manufacturer item for me. Although the bolt patterns are supposed to be a standard per clutch type, I still find problems from time to time when I mix them up...

427 valves in Edelbrock heads with a standard 428 bore will hit the cylinder walls, trust me, I've seen it happen with a relatively mild cam- (.560 lift). If you take the bore to 30 over you might be o.k., but with a std bore, it will hit.