Enginetech ERV943-16 .550" Lift Z28 RV HP Valve Spring Set for Chevrolet Small Block SBC 400 350 327 307 305 283 5.7L EnginesOutside Diameter: 1. 260" Inside Diameter: 0. 785" Closed: 114 lbs. @ 1. 710" Open: 318 lbs. @1. 210" Coil Bind @: 1. 160" This Enginetech ERV943 16 Valve Spring Set is designed for 1955 1993 Chevrolet Small Block SBC 400 350 327 307 305 283 5. 7L Engines. Single with damper, it is ideal for towing, RV, and mild camshaft applications with lifts up to . 550". This reliable set will help give your engine the performance you need. outside dia.: 1. 260"

GM Gen III/LS1/LS2/LS6 Endure-X™ Solid Roller Lifters from COMP Cams® are engineered to withstand the demands of aggressive cam lobe designs and increased RPM ranges

* Tunable metering system

75 Piston Ring Set M39516 STD

82 option providing a convenient way of increasing valve lift without having to undergo a full cam swap

OEM Throttle Body Adaptor Plate - Part# 146029-KIT

naturally aspirated rectangle port heads

fully programmable sequential rev limiters for staging or boost building with six options for activation

341" Lobe Separation 112° 112° Lash Cold 0 0

Camshaft Series: Thumpr

Enginetech C262-42 Gasket GM 1986-1993 4

Hypereutectic

This pump is manufactured by Melling and packaged under the ENGINETECH brand