Milled head’s and or block, long rods, raised deck pistons, lifts over .5 inch .050 durations over 220 degrees, Lobe Center Angle with crankshaft outside 108 to 110 degrees This is not LSA which is the distance between intake and exhaust centers this is where the crank is in relation to the intake at peak lift. Here you do have to watch with split cams as while the intake has more diameter the exhaust often has more duration and lift so what works on the intake side might have problems on the exhaust side.
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