15 Degree Chevy Cylinder Head
15-degree-chevy-cylinder-head-115-degree-chevy-cylinder-head-615-degree-chevy-cylinder-head-515-degree-chevy-cylinder-head-415-degree-chevy-cylinder-head-3

Small Block Chevy 15 Degree

$2,499.92$5,402.80

A 226cc or 254cc as cast port or CNC ported option intake are designed for circle track or drag racers who want to benefit from huge horsepower increases over traditional performance chevy heads. The CHI 18 degree head features repositioned valves, moving them closer to the bore centreline significantly increasing potential flow to suit power well over 700HP.

The price listed is for a pair of heads.

Clear
SKU: SBC15 Categories: ,

Product Description

The CHI 15 degree Small Block Chevy cylinder head is a rolled over version of our 18 degree head that uses all the same components ( valves manifold etc ) but with added advantage of a smaller combustion chamber (volumes in mid 40’s can be achieved ). CHI 15 degree heads are available in the same port size as the 18 degree head with fully CNC machined ports and chambers.

CHI 15 Degree Chevy heads offer significant performance gains over tradition 23 degree chevy heads, designed for circle track and drag racers looking to unlock the full potential of their engines.

AS the Chi 15 degree head is a rolled over version of our 18 degree head it carries over the same features such as relocated valves, postioning them closer to the bore centreline for increased flow potential. As standard these heads come with CNC finished combustion chambers in 55cc or 64cc. Although chamber volumes in the mid 40’s can be achieved.

As with all CHI heads you have the option of bare or assembled heads ready to bolt on. Ductile iron intake seats, high nickel exhaust seats and CHE bronze alloy valve guides come as standard. Beryllium Copper seats are available upon request.

 

15 Degree Flow Chart

Head ModelPart No.AssembledChamberValve Sizes
Intake
Valve Sizes ExhaustExhaust PatternIntake ManifoldApplication
15 Degree 226ccSBC15226B-55Bare55cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995
SBC15226B-64Bare64cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995
SBC15226C2-55Street/Strip55cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Street/Strip Flat Tappet/Hyd Roller
SBC15226C2-64Street/Strip64cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Street/Strip Flat Tappet/Hyd Roller
SBC15226C3-55Competition55cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Strip Solid Flat Tappet
SBC15226C3-64Competition64cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Strip Solid Flat Tappet
SBC15226C4-55Competition55cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Strip Mild Solid Roller
SBC15226C4-64Competition64cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Strip Mild Solid Roller
SBC15226C5-55Competition55cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Race Solid Roller
SBC15226C5-64Competition64cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Race Solid Roller
15 Degree 254ccSBC15254B-55Bare55cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995
SBC15254B-64Bare64cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995
SBC15254C2-55Street/Strip55cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Street/Strip Flat Tappet/Hyd Roller
SBC15254C2-64Street/Strip64cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Street/Strip Flat Tappet/Hyd Roller
SBC15254C3-55Competition55cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Strip Solid Flat Tappet
SBC15254C3-64Competition64cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Strip Solid Flat Tappet
SBC15254C4-55Competition55cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Strip Mild Solid Roller
SBC15254C4-64Competition64cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Strip Mild Solid Roller
SBC15254C5-55Competition55cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Race Solid Roller
SBC15254C5-64Competition64cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Race Solid Roller
15 Degree 240ccSBC15240B-55Bare55cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995
SBC15240B-64Bare64cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995
SBC15240C2-55Street/Strip55cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Street/Strip Flat Tappet/Hyd Roller
SBC15240C2-64Street/Strip64cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Street/Strip Flat Tappet/Hyd Roller
SBC15240C3-55Competition55cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Strip Solid Flat Tappet
SBC15240C3-64Competition64cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Strip Solid Flat Tappet
SBC15240C4-55Competition55cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Strip Mild Solid Roller
SBC15240C4-64Competition64cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Strip Mild Solid Roller
SBC15240C5-55Competition55cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Race Solid Roller
SBC15240C5-64Competition64cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Race Solid Roller
15 Degree 260ccSBC15260B-55Bare55cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995
CNC PortedSBC15260B-64Bare64cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995
SBC15260C2-55Street/Strip55cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Street/Strip Flat Tappet/Hyd Roller
SBC15260C2-64Street/Strip64cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Street/Strip Flat Tappet/Hyd Roller
SBC15260C3-55Competition55cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Strip Solid Flat Tappet
SBC15260C3-64Competition64cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Strip Solid Flat Tappet
SBC15260C4-55Competition55cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Strip Mild Solid Roller
SBC15260C4-64Competition64cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Strip Mild Solid Roller
SBC15260C5-55Competition55cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Race Solid Roller
SBC15260C5-64Competition64cc2.180 X 5.4501.620 X 5.450SpreadEdelbrock 2995Race Solid Roller

Additional Information

Cylinder head type

226cc, 240cc CNC Ported, 254cc, 260cc CNC Ported

Assembly

Bare, C2 – Street/Strip Assembly, C3 – Competition Assembly, C4 – Competition Assembly, C5 – Competition Assembly

Chamber Volume

55cc, 64cc