 Unbeatable unique casting technology along with unbeatable cylinder head design gives us the “Pro-Filer” BBC Standard Port 24 degree replacement cylinder head.Available in 3 different intake port sizes (290cc, 320cc and 350cc) we have made this head usable by anyone.Ready to go, straight out of the box, the “Pro-Filer” BBC Standard Port solves every racers need of getting BIG power and BIG performance for little time and money. Ships UPS or Fed Ex
Note: Manufacture Flow rates may vary for any number of circumstances due to valve job, valves, the flow bench used, test parameters, etc.
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Note: Manufacture Flow rates may vary for any number of circumstances due to valve job, valves, the flow bench used, test parameters, etc.
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Note: Manufacture Flow rates may vary for any number of circumstances due to valve job, valves, the flow bench used, test parameters, etc.
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Technical Details
Material: A356 Primary Ingot Aluminum
Valve Angle: 24 Degree (rolled two degrees)
Intake Ports: 290cc, 320cc, 350cc
Intake Port Design – Modified Oval Port
Intake Port Flow: 290cc = 365cfm @.800, 320cc = 395cfm @.800, 350cc=420cfm@.800 Profiler #’s
Combustion Chamber – 119cc, can be reduced to 105cc (.005 per cc flat milling, .007 per cc angle milling)
Valve Spring Pocket – 1.625″
Bore Spacing: Standard BBC 4.840
Exhaust Valve – 1.880″ – 1.900 / +.100 long
Intake Valve – 2.225″ – 2.300″ / +.250 long
Deck Thickness – Approx 1/2″ deck for Nitrous and Blown applications
Spark Plugs – Use Gasketed 3/4″ Reach Plugs NGK R5671A-7 or colder
Valve Guides: Bronze Alloy .562″ OD
Valve Train – Stock BBC (Jesel or T&D for best results)
Valve Seats – Ductile Steel
Accessories – Heads drilled and taped for standard accessories
Product Accessory Details
Intake Manifold: Pro-Filer Single Plane
Intake Gasket: Special Pro-Filer or Cometic PN IR250060KF
Valve Cover Gasket: Stock BBC
Exhaust Gasket: Stock BBC
Head Gasket: 4.540 bore Cometic C5433 or Fel-Pro 1017
Head Gasket: 4.600 bore Cometic C5434 or Fel-Pro 1057
Valve Covers – Standard BBC Bolt Pattern Pro-Filer PN 191
Rockers – Stock BBC (Jesel or T&D for best results)
Pistons: Most 24 Degree Aftermarket
Valve Springs – Up to 1.670″ Dia
Valve Spring Installed Height: 2.000″
Head Bolts – ARP
Head Studs – ARP
Product Recommendations for Optimum Performance
Intake Manifold: Pro-Filer Sniper Tunnel Ram
Pistons: Wiseco
Nitrous Systems: NOS or Nitrous Express
Bore Size: Optimized Bore of 4.50 and larger
Rocker Systems: Shaft Mount (Jesel / T&D)
Valves: Manley or Victory Titanium Valves
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Oval port design promotes high intake port velocity for killer torque output • Available in 290cc, 320cc and 350cc intake port sizes to cover all applications • End pads drilled and tapped for accessories • standard stud girdles and rockers fit • Accepts up to 1.625 Springs