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SB2 Aluminum Racing Head

From GM Performance - These new SB2 (small block second generation) heads are designed for maximum effort competition, proved durability, simplified preparation procedures, and reduced over all cost of building and maintaining as S/B V8 racing engines.
PN Details Special
Shipping		 Engine Model(s) Years List Price Your Price Add to
36694 Chevy Small Block V8 - SB2 Aluminum Racing Head All Camaro Chevelle ChevyII ElCamino Impala Nova All 1704.95 1549.95/Each
From GM Performance - The CNC cylinder head is the same as base head P/N 24502559 except it is CNC ported.
PN Details Special
Shipping		 Engine Model(s) Years List Price Your Price Add to
36695 Chevy Small Block V8 - SB2 CNC Ported Aluminum Racing Head All Camaro Chevelle ChevyII ElCamino Impala Nova All 3651.73 3319.75/Each