BBC 24 Degree CNC Ported Cylinder Heads

CNC Ported for optimum flow rates

Rectangular port design promotes high intake velocity for killer torque output

Available in 365cc and 385cc intake port sizes

End pads drilled and tapped for accessories, standard stud girdles and rockers fit!

Accepts up to 1.740" Diameter Springs

Technical Details

Material: A356 Primary Ingot Aluminum
Valve Angle: 24 Degree (rolled two degrees)
Intake Ports: 365cc, 385cc
Intake Port Design - Rectangle Port, CNC Machined
Intake Port Flow: 365cc = 415cfm @.800, 385cc = 430cfm@.800
Combustion Chamber - 119cc, can be reduced to 105cc (.005 per cc flat milling, .007 per cc angle milling)
Bore Spacing: Standard BBC 4.840
Exhaust Valve - 1.880" - 1.900 / +.100 long
Intake Valve - 2.350" / +.350 long 385cc head, 2.300" for 365cc head
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 .502" OD
Valve Train - Uses Stock or Most Aftermarket Rocker Systems (shaft mount recommended)
Valve Seats - Ductile Steel
Spring Retainers - Titanium
Accessories - Heads drilled and taped for standard accessories (alternator)

Product Accessory Details

Intake Manifold: Pro-Filer Single Plane or Fabricated Sheet Metal
Intake Gasket: Special Pro-Filer Cometic PN IR250060KF
Valve Cover Gasket: Stock BBC
Exhaust Gasket: Stock BBC
Head Gasket: 4.54 bore Cometic C5433 or Fel-Pro 1017
Head Gasket: 4.60 bore Cometic C5434 or Fel-Pro 1057
Valve Covers - Standard BBC Bolt Pattern Pro-Filer PN 191
Rockers - Standard BBC or shaft rockers (T & D, Jesel)
Pistons: Most 24 Degree Aftermarket
Valve Springs - Up to 1.670" Dia
Valve Spring Installed Height: Determined by Valve Height When Ordered
Head Bolts - PN Information Pending
Head Studs - PN Information Pending

Product Recommendations for Optimum Performance

Intake Manifold: Pro-Filer Sniper Single Plane
Pistons: Wiseco
Nitrous Systems: Nitrous Express or Wilson Manifolds Pro-Flow
Bore Size: Optimized Bore of 4.50 and larger
Rocker Systems: Stock or Shaft Mount (Jesel/T&D) both available from Pro-Filer
Valves: Victory Valves - Stainless Steel

Part Numbers
Note: Copper Seats available by special order add $100. Solid Castings (no water jacket) add $100. Victory Titanium Valves also available, call for details.


174-X-C36 Series BBC 24deg 365cc CNC Ported Cylinder Head
	PN	Description	Price	Qty
	174-X-C36-03	Ductile Steel Valve Seats & 11/32 Bronze Guides	$1300.00 ea
	174-X-C36-04	Assembled with 11/32 Bronze Guides, 3 angle valve job, Steel Seats, Stainless Steel Valves (2.300/1.880), Ti Retainers, Double Roller Springs, 10 Degree Locks	$1695.00 ea
174-X-C38 Series BBC 24deg 385cc CNC Ported Cylinder Head
	PN	Description	Price	Qty
	174-X-C38-03	Valve Job with 11/32 Bronze Guides	$1300.00 ea
	174-X-C38-04	Assembled with 11/32 Bronze Guides, 3 angle valve job, Steel Seats, Stainless Steel Valves (2.350/1.880), Ti Retainers, Double Roller Springs, 10 Degree Locks	$1695.00 ea
174 Series Cylinder Head Accessories
	PN	Description	Price	Qty
	IR250060KF	Cometic Single Intake Gasket for 174 Heads Qty 2 required for new installations (replaces PN 174-IG)	$11.66 ea

updated02/11/09

Pro-Filer Performance Products
PO Box 217
New Carlisle, OH 45344
937-846-1333
info@profilerperformance.com