$1,249.99
High-performance billet head for GX390, GX420, and GX440 engines, featuring 45/36 titanium valves, a 37cc chamber, Ampco 45 seats, Comp Cams GP966 springs, and titanium retainers. Flows up to 220 CFM and includes an offset valve cover spacer for springs up to 1.5″ diameter. Comes complete with a custom exhaust flange, widened rocker shaft, valve cover spacer, and intake. Requires an aftermarket valve cover.
Big Block Gx390/420/440 billet head
-45/36 titanium valves,
-37cc chamber
-Ampco 45 seats,
-Comp cams gp966 springs,
-Titanium Retainers
-uses gx390 style rockers,
-Now with offset valve cover spacer to accept springs up to 1.5″ Diameter
-Flows 220cfm-
Comes with custom exhaust flange, widened rocker shaft, valve cover spacer, and Intake!
must use aftermarket valve cover!!!
| Type of rockers being used | Black Venoms, Gage Ultalights |
|---|
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