This 3 Bolt 4 Pole timing chain gear is used when converting from a 1 bolt camshaft to 3 bolt camshaft.
Fits all LS engines except LS7 and LS9.These high-quality ARP cam bolts
have increased preload clamping force to ensure positive timing gear
register. Their increased material strength overcomes valvetrain
harmonics and stress.
Consist of:
- 3 bolt cam sprocket (58X) 12586481
- Crank sprocket 12556582
- LS2 (Heavy duty) timing chain 12646386
- ARP cam bolts 134-1003
- Timing chain dampener 12588670