6.6
1978 Pontiac 400 Engine: Specs, Configuration, and Service Intervals
1978 Pontiac 400 Engine Specs Engine Configuration The 1978 Pontiac 400 engine was a V8 engine that was part of the Pontiac V8 engine family. It featured a displacement of 6.6 liters or 400 cubic inches. The engine had a bore of 4.12 inches and a stroke of 3.75 inches. Read more…