Engine Pro MC1737 Stage 3 Camshaft & Lifters Kit for Chevrolet Big Block 396 427 454 Engines 501/527 LiftHydraulic Flat Tappet Stage 3 Camshaft and Lifters for 1967 1995 CHEVROLET Big Block V8 Engines 396, 402, 427, 454 C. I. and 366 With Chain Drive Fair Idle With Some Lope, Good Low End Torque in the 2400 3000 RPM Range, Gives Strong Pulling Power in 2000 5500 Range. For use with our HA817 Hydraulic Flat Tappet Lifters (Not Included) Advertised Duration: Intake 292 Exhaust 302, Duration @ . 050": Intake 214 Exhaust 224, Valve Lift: Intake 501 Exhaust

This Beehive™ Valve Spring Kit for LS engines is designed for hydraulic roller cams and includes carefully matched Beehive™ Springs

Most accurate bottle pressure monotoring

The 228R camshaft is large enough that we recommend a larger than stock stall converter in automatic cars

Washers Included:Yes

Camshaft Material: Cast Iron

Brian Tooley Hardened Pushrods

The increased valve train stiffness provided by the COMP Cams Max-Lift BSR Shaft Rocker Systems makes the same camshaft perform like a slightly larger camshaft as more of the lobe lift is transferred directly to the valve

Note: Custom ECU Tuning required

Most '87+ cars came with roller lifters

these studs are more resistant to flex and will provide a more positive seating

Through extensive in-house dyno and Spintron testing

especially those in boosted applications