Originally Posted by Jamies460
With this 557ci engine rebuild ( Scat 557 stroker kit ) I read in a article you must use a ATI damper and not a Fluiddamper as a fluiddamper can cause the crankshaft to brake ! the damper I was hoping I could use is the Ford one that came on my Exterally balanced 460ci ( D9TE-AB block) with my Ford damper only numbers I can find are on the back, 6316 and 4RB6. I'm hoping some-one can tell me what Damper I have and can I use it on the Scat 9000 series crankshaft ( 4-500 stroke ) Thanks, Jamie.
SCAT discourages the use of fluidampers with their crankshafts. I am not sure but I think that they will not warrany their cranks if a fluidamper was used.
All factory Ford 460 harmonic balancers (regardless of whether they originated on internal and external engines) are "zero balance" components and will work on any 460 engine/crankshaft.
The internal/external componentry is actually the flex plate (internal or external) and the crank snouts spacer that goes between the timing cover and the balancer.