The GM LS family of engines relies on a press fit of the crankshaft pulley as its only means of preventing rotation. While this may be sufficient for a stone stock grocery getter, any competition / performance build should deem locking the crank pulley a necessity. High RPMs, factory or custom belt driven superchargers, aftermarket dry sump systems, etc, all require a more positive locking of the pulley to the crank snout. Massive has produced the finest available solution to this issue, the LS-X-ACT pinning kit. This bolt on fixture allows you to accurately, safely drill a path to insert a steel dowel pin between the pulley and the crank. This will prevent any opportunity for pulley orbit. Our tool is precision machined from billet aluminum and fitted with an exclusive carbide drill guide bushing to properly locate the drill path into your crank. There's really not many second chances if this turns out wrong - the competitions tools are merely aluminum blocks that could easily allow a drill to walk and damage your expensive crankshaft. We've also anodized our tool in our signature purple limited color for good looks, corrosion resistance and easy identification. We include the necessary bolt to hold the tool while in use, companion washers, FIVE dowel pins and a high quality 1/4" drill bit. Packed inside rugged reusable PETG Clear case with high vis yellow vinyl caps. Keeps all of your parts together and easy to find in your tool box!!! When it comes to drilled your crank - you want to be LS-X-ACT!!!!
Made right here in the USA!!!
Fits ALL 97 to current LS based engines!