Shop Blessed Performance for the PPE Alternate Firing Order Stage 1 Camshaft for your 2001-2016 Chevy/GMC 6.6L Duramax. Improve performance and reliability from your Duramax with the alternate firing order and improved key way features to prevent slipping of the camshaft and timing issues. The PPE Stage 1 Performance Camshaft – ALT-Firing changes the cylinder firing sequence to 1-5-6-3-4-2-7-8. This alternation reduces the stress exerted on the crankshaft and prevents crankshaft failures which are commonly seen in high-performance applications. With a moderate intake/exhaust duration and a .460’’ intake/exhaust valve lift, this camshaft works great with stock or performance tune. Each camshaft is forged with high-tensile chromoly steel, precision ground to extremely tight tolerance, and then carburized and quenched to achieve 60+ HRC surface hardness. It also features a slotted gear alignment pin for increased durability.
HIGHLIGHTS:
- Keyed - Keyway cut for cam gear
- Alternated firing order reduces engine harmonics
- Reduces the risk of crankshaft failure due to excessive stress
- Increases intake and exhaust airflow
- Forged with high-quality chromoly steel
- Unlocks power potential
- 182°/189° intake/exhaust duration at 0.050" tappet lift
- Preserves low-RPM performance without sacrificing low-end torque