The head casting does not have cast in stands for the rocker arm gear, rather it has machined pads for aluminum rocker shaft brackets to hold the rocker arm shafts. Like the current standard heads these Max Wedge heads featured a four bolt valve cover. These heads flowed like monsters and with the new crossram intake manifold with staggered two four barrel carbs made these powerful 413 engine nearly unapproachable on the strip. This larger exhaust valve required a machined clearance to be done to the top of the cylinder bore. This new ultra high performance head had a 2.08 intake valve and 1.88 exhaust valve which was 1/4 inch larger than current standard production heads. According to the 1962 Dodge salesman's "413 V-8 HIGH-PERFORMANCE ENGINE PACKAGE" booklet this removal was for "greater volumetric efficiency under competitive conditions." In a Chrysler internal paper it says this increased efficiency is due to less heat transfer due to the removal of the heat passage. Another change from the standard head was the removal of the intake manifold heat cross over. The new head has a noticeably taller and wider intake ports that provided much greater intake port volume over the current standard production head offering (approximately 25% more volume). This was the first year for the new Maximum Performance big block Chrysler cylinder head. Which heads are for 1962, which ones for 1963? What about 1964? The answer is fairly simple but there are things to look for.ġ962 Cylinder Head - part # 2402358 / casting # 2402286 From time to time I am asked about Max Wedge cylinder heads.
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