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The Stage 4 Speed Kit is a top-end engine build for the 224cc Predator: a ported and milled 22cc head, stainless 27mm intake and 24mm exhaust valves, 1.2 billet rockers, a flat-top piston and a 280-0611 cam. It raises compression to about 11:1 on pump gas and adds a billet rod, chrome moly pushrods and a stud kit for strength. It suits builders chasing serious power who accept more maintenance and tuning than a Stage 1 or Stage 2 bolt-on kit. It does not fit Hemi-style 224 or any 212 Predator engine.
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The Stage 4 Speed Kit is built for the 224cc Predator engine. It is made for experienced engine builders who want strong power and good reliability. It is similar to the Stage 3 kit, but adds a ported and milled head, stainless valves, billet rockers, a flat-top piston and an all-around cam package.
The head is a ported and milled 22cc "Clone" head. Compression ratio is approximately 11:1, for use with pump gas. The kit also includes a billet rod, a billet guide plate and a full gasket kit.
This kit does not fit the Hemi style 224 Predator or any 212 Predator engines. Some clearance, fitment or other engine building tricks may be needed. An aluminum flywheel is required, because stock flywheels are prone to failure and are very dangerous. The air filter should be sprayed with K&N type oil, especially in dirt applications. Oil is not included.
