BBC 5.0" Bore Space Racing Cylinder Head Race Winning Performance out of the box...
Fits CN Billet 5.0" Bore Space Block PN 1051
Pro-Stock Port Design promotes high intake port velocity
54cc Combustion Chambers allow lighter pistons, more compression and better combustion
Concentric head bolt pattern
12 Degree Hi-Flow Valve Angle Design
The "Pro-Filer" 5.0" bore spaced cylinder head has all the features of our 4.9" version and more. This head is precision ported, has proven performance, and is ready to go straight out of the box. But it has one other important feature - a concentric head bolt pattern that assures 100% sealing and allows the head to be pulled off without the agonizing removal of the intake.
Technical Details
Material - A356 Primary Ingot Aluminum Valve Angle - 12 Degree Intake Ports - 470cc Exhaust Valve - 1.80 to 1.90" Intake Valve - 2.450" to 2.525" Combustion Chamber - 54cc Deck Thickness - Approx 3/4" deck for Nitrous and Blown applications Spark Plugs - Use Gasketed 3/4" Reach Plugs Valve Train - Uses T&D or Jessel Shaft Mounted Rocker Systems Bore Spacing - 5.0" (Chuck Nuytten Billet Engine Blocks pn 1051) Valve Guides - Bronze Valve Seats - Copper Alloy Intake Port Design - Pro-Stock Modified Oval Port Intake Manifold - Use Pro-Filer Weld Kit Valve Covers -Pro-Filer PN 168-B Rockers - Shaft rockers (T & D, Jesel) Valve Springs - Up to 1.625" Dia RPM Range - 4500-9500 RPM
Part Numbers
166 Series 5.0" Bore Space 12deg 470cc Spread Port Cylinder Head
PN
Description
Price
166
5.0" Bore Space 12deg 470cc Spread Port Cylinder Single Head - Raw Casting
$1125.00 ea
166-01
5.0" Bore Space 12deg 470cc Spread Port Cylinder Single Head - Machined Only
$1300.00 ea
166-02-5
5.0" Bore Space 12deg 470cc Spread Port Cylinder Single Head - Copper Alloy Valve Seats & 5/16 Bronze Guides
$1785.00 ea
166-02-11
5.0" Bore Space 12deg 470cc Spread Port Cylinder Single Head - Copper Alloy Valve Seats & 11/32 Bronze Guides
$1785.00 ea
166 Series 5.0" Bore Space 12deg 470cc Spread Port Cylinder Head SOLID - No Water Passages
PN
Description
Price
166S
5.0" Bore Space 12deg 470cc Spread Port Cylinder Single SOLID Head - Raw Casting
$1225.00 ea
166-01-S
5.0" Bore Space 12deg 470cc Spread Port Cylinder Single SOLID Head - Machined Only
$1400.00 ea
166-02-5-S
5.0" Bore Space 12deg 470cc Spread Port Cylinder Single SOLID Head -Copper Alloy Valve Seats & 5/16 Bronze Guides
$1885.00 ea
166-02-11-S
5.0" Bore Space 12deg 470cc Spread Port Cylinder Single SOLID Head -Copper Alloy Valve Seats & 11/32 Bronze Guides
$1885.00 ea
166 Series Cylinder Head Accessories
PN
Description
Price
IR255060KF
Cometic Single Intake Gasket for 166 & 165 Series Heads Qty 2 required for new installations (replaces PN 166-IG)
$8.06 ea
EX383064AM
Cometic Single Exhaust Gasket for 166 & 165 Series Heads Qty 2 required for new installations (replaces PN 166-EG)
$8.50 ea
VC058094KF
Cometic Single Valve Cover Gasket for 166 & 165 Series Heads Qty 2 required for new installations (replaces PN 166-VCG)
