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Generation III Internal Engine 1997-2006 LS1 | LS6
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MS4 cam w/ milled/worked heads

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Old 06-19-2011, 06:04 PM
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Default MS4 cam w/ milled/worked heads
Stock bottom end ls1 with 853 heads and ms4 cam. will i have problems with the valves hitting the cylinders if i go with the 2.055 intake valves, if i have .040 milled heads and fly cutting the pistons. looking for about 11:1.
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Old 06-19-2011, 08:54 PM
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"Shouldn't" hit the heads, but might have some valve shrouding due to the stock bore....but that would just be on the outside edge of the cylinder
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Old 06-20-2011, 10:15 AM
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With the flycuts you should have enough clearance but that setup would not clear if you did not flycut.
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Old 06-20-2011, 10:21 AM
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With a 2.055 int valve and heads cut .040, you better cut at least a .080 relief into the piston.
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