INTERNAL ENGINE MODIFICATIONS Valvetrain |Heads | Strokers | Design | Assembly

862 vs. 706 heads

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Old 08-01-2014, 05:00 PM
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Good info.
Old 06-19-2017, 04:15 PM
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Originally Posted by old motorhead
Thanks Richard,

After further review, once we got them off and compared the two sets, they looked exactly the same. Guess I got some bad info. Maybe GM meant to say, " the L33 has LS6 "type" heads. I guess the compression bump was from the pistons. Still not sure if we have an actual L33 motor.
The heads are virtually the same head only difference I've noticed is the intake runners are cast smoother on. the 706 heads than the 862 heads
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