Ford Racing Cobra Jet Aluminum Heads

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Cobra Jet Heads

The Super Cobra Jet Jon Kaase Design heads have revised valve angles and a more central valve location which reduces cylinder wall shrouding and improves flow to 330 cfm (thru 2.200") intake/225 cfm (thru 1.76") exhaust into the redesigned 72cc combustion chambers for a 40-50HP increase over current Cobra Jet heads. Works with all the same valves, springs, retainers and 7/16" stud mounted roller rockers as the 429 Cobra Jet head but requires new pushrods and guideplates.

Features:

• Ford Racing aluminum 429 Cobra Jet cylinder heads completely redesigned by Jon Kaase
• Revised valve angles and locations to reduce cylinder wall shrouding and improve flow
• Redesigned combustion chambers to accommodate the more centrally located valves
• Uses same valves, valve springs, retainers and standard 7/16" stud mounted roller rockers as current Ford Racing 429 Cobra Jet cylinder heads.
• Requires new pushrod guide plates (397-M-6566-SCJ)
• Standard Cobra Jet intake and exhaust manifolds bolt on
• Current valve covers fit
• 2.200" intake valve, 1.76" exhaust valve
• Flows approximately 330 cfm intake and 225 cfm exhaust
• 72cc combustion chambers
• 290cc intake runner, 148cc exhaust runner
• 25-50 HP increase over current Ford Racing aluminum Cobra Jet heads depending on displacement and camshaft
• The best street/strip Ford big block cylinder head on the market today!
• Uses Motorcraft AGSP series spark plugs
• NOTE: If replacing current or production Cobra Jet heads, new intake valve notches are required