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12529093-SBC L31 350 Vortec Head
(Part # 12529093)

Price: $295.00

This bare head is identical to complete head assembly P/N 12558060 except it does not include intake valves, exhaust valves, springs, and retainers. ... more info


12556463-Corvette Aluminum Head Assembly
(Part # 12556463)

Price: $576.00

This aluminum cylinder head assembly for small-block Chevrolet V8s is ideal for street rods, fresh-water power boats, and high-performance applications. GM Performance Parts' aluminum cylinder head assembly combines the benefits of light weight, adva ... more info


12558060-Cast Iron Vortec Cylinder Head Assembly
(Part # 12558060)

Price: $310.00

This production Vortec iron cylinder head was first used on the 1996 pickup truck RPO L31 with fuel injection. The intake and exhaust port are very similar to the Corvette 350 LT1 heads. This head includes 1.94" intake valves and 1.50" exhaust valves ... more info


24502580-18º V8 (9-1 Compression Ratio)
(Part # 24502580)

Price: $679.00

Designed for 9:1 compression racing engines. Same as P/N 10134364 except it has extra .080" material added to deck to increase combustion chamber volume. It also has .055" material added to intake manifold flange to maintain port alignment. ... more info


24502615-15 degree Aluminum Race head
(Part # 24502615)

Price: $706.00

SBC 15° Alum. Drag Race Head. This new 15º aluminum cylinder head is designed for small displacement racing engines that run competition eliminator. This head is identical to the 18º head, except the head is rolled by machining the deck surface at a ... more info


Aluminum Fast Burn-12464298
(Part # 12464298)

Price: $659.95

This head can be used on any 1958-99 283-400ci small block Chevrolet V8 engine with conventional water flow design, but this head cannot be used on any LT1, LT4, or LS1 engines that are designed with reverse water flow. The all new 23° Fast Bu ... more info


Vortec Bow-Tie Large Port Cylinder Head,Complete-25534446
(Part # 25534446)

Special Price: $539.00

GM Performance Parts' latest and most powerful iron cylinder head with "Large Port" for Street or Racing. This Vortec design Special Performance cast iron cylinder head features revised intake and exhaust ports and includes 2.00" hollow stem intake v ... more info