1970 Buick GS455 Automatic 455 Stage 1 V8 Engine

In 1970 the power increased even further with the addition of the Grand Sports big block 455ci V8 producing the most torque of any American production car of its era! The Stage I Performance Option bought you a high output 455ci with ram air cold air induction, ported heads with larger intake/exhaust valves, aggressive high lift camshaft, stiffer valve spring & damper assemblies, high volume fuel pump, rejetted Rochester carburetor, special built TH400 automatic transmission