Ford Performance Parts SUPER COBRA JET CYLINDER HEAD ASSEMBLED WITH DUAL SPRINGS

Ford Performance Parts teamed up with Jon Kaase to redesign their 429 Cobra Jet cylinder heads, and the results are these Super Cobra Jet heads. They feature revised valve angles and locations to reduce cylinder wall shrouding and improve flow, along with redesigned combustion chambers to accommodate the more centrally located valves. These heads use the same valves, valve springs, retainers, and 7/16 in. stud-mounted roller rockers as the current Ford Performance Parts 429 Cobra Jet heads, and the standard Cobra Jet intake and exhaust manifolds bolt right on. This new design offers a 25-50 HP increase over current Cobra Jet heads, depending upon displacement and camshaft.

• Fits 429 and 460 ci engines (except BOSS 429)
• Valve angles and locations designed to reduce cylinder wall shrouding and improve flow
• Combustion chambers designed to accommodate centrally located valves
• Production 429 Cobra Jet intake and exhaust manifolds bolt on
• Production Ford 429/460 valve cover bolt pattern 
• M-6582-C460 Ford Performance Valve Covers recommended 
• 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
• Assembled with solid roller springs: Closed seat pressure 240# @ 1.900"; Open seat pressure 625# @ 1.200"; Max lift .650"
• Machined 10-degree locks and steel valve spring retainers, premium valve seals
• Uses Motorcraft AGSP series spark plugs
• NOTE: If replacing Ford Performance or production 429 Cobra Jet heads, new intake valve notches are required
• NOTE: Uses Felpro® exhaust gasket part number 1420, Uses Felpro® intake gasket part number 1231