5.3 cylinder head ?
#3
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iTrader: (5)
Yes, they are perfectly interchangeable and many go with a ported 5.3L head on the dished piston 6.0L (LQ4) in order to bump their compression up a bit!
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#7
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iTrader: (5)
The 5.3's, 5.7's, and LQ4/LQ9's all had the cathedral ports (different ports, but same design, shape, and intake manifold capability).
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