The EC Billet “Big Midrange” Camshaft fits the Briggs Model 35(18-20Hp) and Model 38(21-23hp) Vanguard V-Twin Engine. 

This camshaft is designed to make top-end power in what we consider mild race engines or if you have a more aggressive racing engine where you need the power heavy in the mid-range. This camshaft makes good power for most mildly tuned race engines up to 7000rpms. Results vary as carburetor and intake manifolds can move and change the rpm range of the camshaft. 

Cam Spec:

Intake Lift: .276 (Stock Rocker Ratio 1.3 = .358, Roller Rocker 1.5 = .414)

Intake Duration @ .050 240

Intake Centerline 108

Exhaust Lift: .276 (Stock Rocker Ratio 1.3 = .358, Roller Rocker 1.5 = .414)

Exhaust Duration @ .050 238

Exhaust Centerline 110

Set Valve Lash .004"