*** IN STOCK SHIPS TODAY *** LS/ATI EFI 12-1 dampner crank trigger ring. A crank trigger kit bolts directly to the crankshaft, so the timing is determined by the position of the crankshaft itself. Meaning there are no mechanical variables to worry about like a sloppy timing chain or sloppy distributor gear.
O.D of crank trigger ring is 7.00", has 11 magnets 30 degrees apart with one magnet free pocket on the twelve pocket degree ring.
Fits all ATI LS harmonic dampners that use a 3.200" bolt circle with 3/8" mounting hardware. Made from billet .375" alum. and black anodized. Crank trigger ring has a 2.280" center register, 4.750" x .060" register on the backside of the crank trigger ring. Included is grade 8 3/8"-16 coarse thread mounting bolts with 3/8" stainless steel washers.