Dart 13101181 Cylinder Head Aluminum Small Block Ford Pro1 170cc 58cc 1.940" x 1.600", Assembly w/ 1.250" Single Springs for Hydraulic Flat Tappet Cam

Dart 13101181 Cylinder Head Aluminum Small Block Ford Pro1 170cc 58cc 1.940″ x 1.600″, Assembly w/ 1.250″ Single Springs for Hydraulic Flat Tappet Cam

Material: RMR Cast Aluminum Alloy

Valve Angle: 20° (stock)

Intake Port Volume: 170cc

Intake Valve: 1.940”

Exhaust Valve: 1.600”

Springs: 1.250″ Single Springs for Hydraulic Flat Tappet Cam Max Lift: .510″

Chamber Volume: 58cc

Excellent street, strip, oval track and truck or marine performance upgrade. Maximum torque and throttle response from idle to 6,000 RPM. Best for 302-351 cubic inch engines. Works with most standard components.

Small block Ford PRO1 20° 170cc Aluminum cylinder Head feature high flowing as cast ports with profiled valve guide bosses and are bowl blended on 5-axis CNC machining centers.

Standard valve angle and spacing is retained for bolt on compatibility. Exhaust runners are raised .135” for improved flow. Manganese Bronze valve guides are used for long life, and hardened valve seats provide durability with unleaded fuels.

Assemblies include Stainless Steel valves, premium springs, locks, retainers, guide plates and seals.

Heads are sold individually.