Quote:
Originally Posted by Ironangel
What casting number are on the heads? My .060 over 396 likes 20 initial and 40+ by 3000 rpm...I'm right at 1000ft
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I am away from the truck right now, but when I ran the numbers back in the beginning, they worked out to be 71 402 heads. These are not the peanut port heads, but the larger port square/rectangle heads. The heads were completely reworked with new valves, seats, guides, retainers, rocker lifters etc.