AMC 401 w/Indy cylinder head: 114-3603: AMC 343-401 '70 to present w/Edelbrock heads : 114-3604: AMC 343-401 '69 & earlier w/Edelbrock heads: 114-3605: AMC 343-401 ... The DFV is an internal combustion engine that was originally produced by Cosworth for Formula One motor racing.The name is an abbreviation of Double Four Valve, the engine being a V8 development of the earlier four-cylinder FVA, which had four valves per cylinder.
Needed a new cylinder head for my 1997 Jeep Wrangler 4.0L. Clearwater Cylinder Head was recommended from a Jeep thread I was following. Price was a little more than rebuilding my old head but I was getting new valves and a better casting on the new one. Tim at Clearwater was very helpful and explained everything thoroughly.