Manley Performance Extreme Duty Exhaust Valves LS Next2 The center counterweights of the

The center counterweights of the Callies crankshaft increases its stiffness by 25% and reduces harmonics

Coupling this Hi–Ram intake with the high flowing style cylinder heads has outstanding potential for N/A and forced induction applications at a budget–minded cost

Check out this video of a recent build with an optional Hogan bilet intake manifold

Fuel Map and Learn Function Smoothing – Helps to smooth rough areas of the maps

Manley Performance Extreme Duty Exhaust Valves LS Next2 The center counterweights of theManley Performance Extreme Duty Exhaust Valves for LS1 LS2 LS6 consists of: 1. 600" Head Diameter . 3136" Stem Diameter Hard Coated w . 0002" thick Chrome Stems High Temperature Strength Swirl Polished & Fully Machined Sold in sets of 8