Unless its courtesy of a vintage purple shaft cam, the shake, rattle, and roll of an engine isn’t generally a good thing. If one were to take a ride on the rotating assembly railroad, it would be clear that the crankshaft is taking an absolute beating with every violent combustion event reverberating through the piston, down the connecting rod, and into the journals.
Every engine comes with this inherent series of pulsations and the OEMs found out pretty early on that it would be wise to reduce the rattle with what came to be known as a harmonic balancer or damper. As is usually the case, aftermarket suppliers like Romac weren’t far behind with heavy-duty dampers made for even the stingiest of standards.
The Romac balancers that Bill Mitchell Products can provide check two of the most important boxes in any engine build: affordability and effectiveness. Chrysler applications include internally-balanced big-blocks with an even (P/N 0214) or odd (P/N 0215) bolt pattern, internally-balanced small-blocks (P/N 0218), and externally-balanced small-blocks (P/N 0217 C/W).
All feature a steel construction that’s SFI 18.1 approved. That SFI approval is a safety measure that ensures the damper isn’t going to have a high-speed come apart at the most inopportune time. Any vehicle that’s going to run the quarter-mile in less than 10.99 seconds at an NHRA-sanctioned event has to have one. Anyway, it’s better to be safe than sorry on the snout of your stroker.