SBC 23 Degree Racing Cylinder Head Race Winning Performance out of the box...
Accepts up to 1.600 Springs
End pads drilled and tapped for accessories
Bronze valve guides reduce stem wear
Perfect Stock Replacement Intake Port Size 210cc
Available in with or without water jackets
As with all Pro-Filer Performance Products, our Small Block Chevy standard replacement cylinder head is a fierce competitor on the track. Powerful port design produced with unbeatable casting technology gives the "Pro-Filer" SBC Standard Port 23 degree replacement head and edge on the market to provide you with awesome power to dominate your field.
Whether it's circle track or drag racing chose the Pro-Filer SBC for a ready to go straight out-of-the-box solution to needing BIG power and BIG performance for little time and money.
Air Flow Chart
Note: Flow rates may vary for any number of circumstances due to valve job, valves, the flow bench used, test parameters, etc.
Technical Details
Material: A356 Primary Ingot Aluminum
Valve Angle: 23 Degree (Intake)
Bore Spacing: Standard SBC
Intake Port Volume: 210cc
Combustion Chamber: 64cc
Exhaust Valve Diameter: 1.600 or 1.625
Intake Port Flow: 295 cfm@ .700 with 2.055 valve
Intake Valve Diameter: 2.02, 2.055 or 2.080
Deck Thickness: 1/2" Deck for Nitrous or Blown Applications
Spark Plugs: Angled .750 Reach, Gasketed (NGK R5671A-7 or colder)
Valve Train: Standard or Shaft Mounted
Valve Guides: Bronze Alloy (standard)
Spring Pocket: 1.625 OD Maxiumum
Valve Springs: Up to 1.600" Dia
Valve Seats: Ductile Steel (standard)
Valve Length: 4.890 - 5.115 (depending on spring size)
Product Accessory Details
Intake Manifold: Aluminum Single or Dual Plane
Intake Gaskets: Use Fel-Pro 1206 or Mr. Gasket 5812)
Exhaust Gaskets: Use Fel-Pro 1406
Valve Covers: Center or Rail Bolt SBC
Pistons: Most 23 Degree Aftermarket
Rocker Systems: Standard
Head Bolts / Studs: Stock Head Bolts or ARP #134-3601, Head Studs - ARP 134-4001 or 234-4301 (12pt)
Push Rod Length: Stock Length = 7.800 to +.100 (should be measured as needed)
Push Rod Guide Plate: MUST USE Isky #200-AGP
Stud Girdle: Can use any standard girdle
Block Use: Any SBC Block (Iron or Aluminum)
Product Recommendations for Optimum Performance
Intake Manifold: Any Dual or Single Plane Intake Manifold
Bore Size: Optimized for 4.030 bore
Pistons: Most Aftermarket
Rocker Systems: Shaft Mounted: Jesel or T&D (both available from Pro-Filer)
Nitrous Systems: Nitrous Express or Wilson Manifolds Pro-Flow
Valves: VICTORY Valves - Titanium or Stainless Steel
Part Numbers
Available Solid (no water passages) for $100 extra, call for details..
176 Series SBC 23 Degree Racing Cylinder Head
PN
Description
Price
176-21-02
SBC 23 Degree, 210cc Ports, Racing Single Cylinder Head - 11/32 Guides & Steel Seats (bare)
$520.00 ea
176-21-04
SBC 23 Degree 210cc Port Racing Single Cylinder Head - Steel Valve Seats, 11/32 Guides, 3 Angle Valve Job, 2.02/1.60 Stainless Steel Valves, Steel Retainers, Roller Springs w/10* locks - Assembled
Accepts up to 1.600 Springs
