Rollmaster CS1230 IWIS Timing Chain Set Double Roller Small Block Chevy Vernier SBC

Rollmaster Iwis Gold Series Seamless Double Roller Timing Chain Set

• Double Roller
• Premium quality German manufactured IWIS timing chain, seamless rollers 
• Small Block Chevy: 350 , 305 , 400 , 383 , 355 , 307 , 283 , 327 , 267 , 302 , 406 any small block Chevy except late model roller cam (which requires a thrust plate), TPI (Tuned Port), LT1 and LS based engines
• Torrington bearing
• Nitrided gears
• Vernier Adjustable: The cam sprocket is produced in two parts which allows the outer sprocket section to move separately and independently relative to the inner hub by way of elongated slots, allowing infinite adjustment to cam timing just by positioning the camshaft to the required degrees then locking the socket head screws around the perimeter which clamps the entire unit together as one solid cam sprocket.
• Vernier sprockets tend to be a little heavier than Rollamster standard Red Label sets as more material is used to aid in the threaded section needed for the inner hub.
• Installation is a breeze with vernier sets as the entire set can be installed in just the same manner as any other timing set.
• By leaving the locking screws on the cam wheel loose you can move the camshaft independently to the crankshaft and timing set without moving anything else. You just dial in your camshaft using the vernier scale and then tighten it all up. 
• Includes cam & crank sprocket, chain
• Please ask if you are unsure of your application