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they replace your existing worn or damaged valve seats
All rockers feature large needle bearings and roller tips
It has bendable locking tabs and comes with special high-strength bolts
Fits big block Chevy rectangular port cylinder heads on standard deck blocks
Speedmaster shirts are the perfect way to let everyone know where you go for high performance aftermarket parts and accessories
Ford FE 390 427 428 Internal Balanced Fluid Damper Harmonic Balancer SFI 18.1 they replace your existing wornUsing only three parts a laser welded sealed housing, an internal inertia ring, and highly viscous silicone fluid between the two these SFI approved Fluid dampers can control all crankshaft vibration, not just a limited frequency range. As a result, you get reduced wear on the main bearings and timing gear, more stable valvetrain operation, and less chance of crank failure.
