when did explorers come with gt40p heads
GT40 and GT40P heads are probably the best factory production small block Ford heads. GT40 and GT40P heads have line designations on the end of each casting. 3 lines on the GT-40 and four lines on the GT-40P.GT40 heads are found on 96 and early 97 V8 Explorer/Mountaineers as well as 5.8L Lightnings and 93-95 Cobras. GT-40P heads are found on the 97 and newer 5 liter Explorer/Mountaineer V8s.The GT40P replaced the standard GT40 on the V8 Explorers and Mountaineers in early 1997.Prior Explorers and Mountaineers had Cobra GT40 heads that were milled to bring it's larger combustion chamber down to the size of the E7 heads to keep compression up. The 5.0 explorer intake was the same from 96-01.T40 and GT40P heads are probably the best factory production small block Ford heads. GT40 and GT40P heads have line designations on the end of each casting. 3 lines on the GT-40 and four lines on the GT-40P.