MSD Atomic AirForce Manifold LT1 RS003C0106 You can download a copy

You can download a copy of the instructions below

Leaves no "fingerprints" on the vehicle network

High compression race engines require "indexing" of spark plugs to prevent contact between piston dome and the ground wire of the spark plugs

1981-1996 GMC G3500

It has 6-1/4" deep

MSD Atomic AirForce Manifold LT1 RS003C0106 You can download a copyThe all new MSD Atomic AirForce intake manifold delivers improved airflow and distribution to improve the performance of stock and modified engines. The unique bell mouthed runner entrances maximize airflow and minimize shrouding all while optimizing the available plenum volume for an unobstructed flow path over opposing runners. The polymer molded 2 piece design allows for easy access to the runners for porting. The Atomic AirForce LT1 manifold