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These heads can be used to replace worn or damaged units on your LS3 engine or as a performance upgrade on any LS engine with a 4" or larger bore. Be the first to leave a review.
· GM Performance Parts Announces High-Flow, CNC-Ported LS3 Cylinder Head. GRAND BLANC, Mich. – GM Performance Parts’ (GMPP) has released a high-flow, CNC-ported version of the LS3 cylinder head. It flows more than Perforance at inch lift (intake side) at 28 inches of water restriction – or nearly 10 percent more than the stock casting Alsscan Caribbean Reading Time: 3 mins.
Chevrolet LSX-CT Cylinder Head. $1, Quick View. LSX-LS7 Bare Cylinder Head CNC. $1, Quick View. LS3 Power Upgrade Kit Includes CNC Ported LS3 Assembled Cylinder Heads. $2, Quick View.