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One CID Heads SB Ford 5
This option removes the water jacket from our cylinder head castings
With an extremely wide flat rocker bar surface they offer unmatched rigidity for even the most severe valve train environment
Allows the use of high lift solid roller camshafts and higher spring rates than the factory posts can withstand
CID LS7 12D BE Cylinder Heads 450CFM - 3.7" CSA - Suit 4.125" + Bore Std Exhaust Height (Per PAIR) Gen V LT1 & LT4 Manifold One CID Heads SB FordCID LS7 12D 3. 7" CSA 12D BE Cylinder Heads 4. 125" + Bore LS7 Inline 450 CFM Cylinder Heads One pair of Bare 12 Degree Inline LS7 12D 3. 7" CSA Port BE cylinder heads CNC ported and valve jobbed with CHE valve guides and CHE Ductile Iron valve seats. Standard height exhaust port fits all existing headers. Developed by Greg Good for X275, flows an outstanding 450CFM @ . 900" , with 360CFM @ . 500" lift. The heads share the same optimized valve