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ATK High Performance 315cc BBC Aluminum Cylinder Heads HPBBC360
Part Number: HPE-HPBBC360
ATK High Performance 315cc BBC Aluminum Cylinder Heads
Cylinder Head, 360cc Runner, Aluminum, 121cc Chamber, 2.250 in. Intake Valve, 1.880 in. Exhaust Valve, 0.675 in. Max Lift, Chevy, Each
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Estimated Ship Date: Nov 19, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
HPBBC360
Part Type:
Product Line:
Summit Racing Part Number:
HPE-HPBBC360
UPC:
00653517731846
Combustion Chamber Volume (cc):
121
Intake Runner Volume (cc):
360cc
Exhaust Runner Volume (cc):
124cc
Cylinder Head Style:
Assembled
Cylinder Head Material:
Cast aluminum
Camshaft Style:
Hydraulic roller
Intake Port Shape:
Rectangular
Intake Valve Diameter (in.):
2.250 in.
CNC-Machined Combustion Chamber:
No
CNC-Machined Intake Runner:
No
CNC-Machined Exhaust Runner:
No
Combustion Chamber Style:
Heart
Intake Port Location:
Standard
Exhaust Port Shape:
D-port
Exhaust Port Location:
Raised
Spark Plug Style:
Angle
Intake Valves Included:
Yes
Exhaust Valves Included:
Yes
Exhaust Valve Diameter (in.):
1.880 in.
Valve Springs Included:
Yes
Maximum Valve Lift (in.):
0.675 in.
Damper Spring Included:
Yes
Number of Springs Per Valve:
Dual
Retainers Included:
Yes
Retainer Material:
Steel
Locks Included:
Yes
Lock Style:
10 degree
Valve Stem Seals Included:
Yes
Valve Stem Seal Style:
Positive stop
Rocker Arm Studs Included:
Yes
Rocker Arm Nut Thread Size:
7/16 in.-20
Rocker Arms Included:
No
Rocker Arm Nuts Included:
No
Guideplates Included:
Yes
Guideplate Pushrod Size:
3/8 in.
Valve Cover Mounting Style:
Perimeter bolt
Accessory Bolt Holes Drilled:
Yes
Intake Valve Angle:
26
Exhaust Valve Angle:
17
Valve Guides Included:
Yes
Valve Guide Material:
Manganese bronze
Valve Seats Machined:
Yes
Valve Seat Material:
Powdered metal
Cylinder Head Color:
Natural
Finish:
Natural
Steam Holes Drilled:
No
Oiling Style:
Through pushrod
Machined for O-Ring:
No
Heat Crossover:
No
Remanufactured:
No
Quantity:
Sold individually.
Notes:
Exhaust port raised 0.375 in. Will not fit bore size under 4.250 in. Viton valve stem seals. 14mm x 0.708 in. reach gasket seat spark plug recommended.
ATK High Performance 315cc BBC Aluminum Cylinder Heads
ATK offers select parts for your build, including cylinder heads. They use them in their engine combinations and are available to complete your big block Chevy engine or upgrade existing components.
ATK High Performance 315cc BBC cylinder head features:
* A356 aluminum construction
* Stainless steel intake and exhaust valves
* Manganese Bronze valve guides
* Viton® valve seal
* Powder meatal valve seats
* Steel retainers with 10-degree locks
* Spark plug dimensions: 14mm x .708 in. with gasket seat
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