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Cylinder Head LS1 Showroom Stock Racing

From GM Performance - This uses a production LS1 cylinder head (casting P/N 12559853) and has .035 inch machined off the deck surface to decrease it to 63cc chamber size. This raises the compression to 10.8:1 They also do a performance valve job with CNC porting with high lift valve springs P/N 12565177.
PN Details Special
Shipping		 Engine Model(s) Years List Price Your Price Add to
36700 Chevy Small Block V8 - All Camaro Chevelle ChevyII ElCamino Impala Nova All 1594.95 1449.95/Each