Engine Valve Spring Retainer 2019 chevrolet corvette this manifold increases torque and

this manifold increases torque and horsepower from idle to 5500 rpm

18/23 Degree Head

480" at the base and 2

hardware and instructions for an easy installation

PROFORM's Race Series carbs just got better because now the Gas/Drag models are available with billet annular boosters for increased fuel atomization and better throttle response

Engine Valve Spring Retainer 2019 chevrolet corvette this manifold increases torque andThe Edelbrock #9602 Valve Spring Retainers are for #5745 & #5823 Valve Springs. They require 11 32" Valve Stems & 7 Deg Locks. They are made of superior quality steel and feature a black oxide finish to prevent rust and corrosion.