Pro-Filer Small Block  Chevy Aluminum 23° Heads on Sale Now!  $2095.00 Special Awesome Engines Complete Cylinder Head Package Proven for In House Power

SBC 23 Degree Racing Cylinder Head
Race Winning Performance out of the box…
  • Small Block Aluminum 23 Degree Head PN 176 SeriesAccepts 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, their 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.

Whether it’s circle track or drag racing, chose the Pro-Filer SBC for a ready to go straight out-of-the-box solution for 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)
Valve Seat Angle: 50° Rolled Radius Intake and Exhaust
Intake Port Volume: 210cc
Combustion Chamber: 64cc (60cc optional $100)
Exhaust Valve Diameter: Manley 1.600″ 50°
Intake Port Flow: 303cfm@ .700″ w/2.080″ Intake valve
Intake Valve Diameter: Manley 2.080″ 50°
Deck Thickness: 1/2″ Deck for Nitrous or Blown Applications
Spark Plugs: Angled .750″ Reach, Gasket (Autolite AR3935 or colder)
Valve Train: Standard or Shaft Mounted (Jesel or T&D available)
Valve Guides: Bronze Alloy (standard)
Spring Pocket: 1.625″ OD Maximum
Valve Springs: Manley NexTek 1.550″ (hydraulic or flat tappet available)
Retainers: Manley Titanium w/10° Valve Locks
Valve Length: 4.890″ – 5.115″ (depending on spring size)

Product Accessory Details

Intake Manifold: Aluminum Single (drag race) or Dual Plane (street)
Intake Gaskets: Use Fel-Pro 1206 or Mr. Gasket 5812)
Exhaust Gaskets: Use Fel-Pro 1406
Valve Covers: Center or Standard Rail Bolt SBC
Pistons: 23 Degree Aftermarket (stock pistons must check p/t/valve)
Rocker Systems: Standard or Shaft Rockers (Jesel or T&D)
Head Bolts / Studs: Stock Head Bolts or ARP #134-3601, Head Studs
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)
Available Solid (no water passages) for $100 extra, call for details..