Why do Survival kits include internal balancing?
Because it’s the right thing to do. Internal balancing is easier on the crank and bearings at high RPM and high power levels. Even the Scat 3.984 stroke 428 replacement cranks are designed to be internal balanced, unlike the factory pieces. Internal balancing allows you to run readily available dampers, flywheels, and flexplates from a 427 or a 390 without being concerned about disturbing the engine’s balance. H beam or I beam rods – which to use? We generally prefer the H beam for most FE stroker applications. They are a bit beefier, and the machining and finish seems a touch nicer. We’ve run H beams at over 750 horsepower with no issues at all. I beams are a great alternative for street oriented engines, and will save you about $130 if you choose them. Why 6.700 rods instead of longer ones? We don’t subscribe to the “longer is better” philosophy on rods. We consider the piston ring seal to be far more important. The 6.700 rod allows even the 4.250 stroker combo to keep the ring groov
