I've ran restricted pushrods for quite a few years. When the heads were reworked a few years ago Dave Bisschop, he said there was zero issues with my valvetrain.
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466 Mike Voycey shortblock, 310cfm SD KRE heads, SD "OF 2.0 cam", torker 2
373 gears 3200 Continental Convertor
best et 10.679/127.5/1.533 60ft
308 gears best et 10.76/125.64/1.5471
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