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ATK High Performance Aluminum Cylinder Heads for Small Block Chevrolet HPSBC220
Part Number: HPE-HPSBC220
ATK High Performance Aluminum Cylinder Heads for Small Block Chevrolet
Cylinder Head, SBC, Aluminum, 66cc Chamber, 219cc Runner, 2.080 in. Intake Valve, 1.600 in. Exhaust Valve, 0.625 in. Max Lift, Chevy, Each
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Estimated Ship Date: Nov 18, 2026 Would you rather pick it up?
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Overview
Brand:
Manufacturer's Part Number:
HPSBC220
Part Type:
Product Line:
Summit Racing Part Number:
HPE-HPSBC220
UPC:
00653517731815
Combustion Chamber Volume (cc):
66
Intake Runner Volume (cc):
219cc
Exhaust Runner Volume (cc):
78cc
Cylinder Head Style:
Assembled
Cylinder Head Material:
Cast aluminum
Camshaft Style:
Hydraulic roller
Intake Port Shape:
Rectangular
Intake Valve Diameter (in.):
2.080 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:
Square
Exhaust Port Location:
Raised
Spark Plug Style:
Angle
Intake Valves Included:
Yes
Exhaust Valves Included:
Yes
Exhaust Valve Diameter (in.):
1.600 in.
Valve Springs Included:
Yes
Maximum Valve Lift (in.):
0.625 in.
Damper Spring Included:
No
Number of Springs Per Valve:
Dual
Retainers Included:
Yes
Retainer Material:
Steel
Locks Included:
Yes
Lock Style:
7 degree
Valve Stem Seals Included:
Yes
Valve Stem Seal Style:
Positive stop
Rocker Arm Studs Included:
No
Rocker Arms Included:
No
Rocker Arm Nuts Included:
No
Guideplates Included:
No
Valve Cover Mounting Style:
Perimeter bolt
Accessory Bolt Holes Drilled:
Yes
Intake Valve Angle:
23
Exhaust Valve Angle:
23
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 0.250 in. Will not fit bore size under 4.000 in. Viton valve stem seals. 14mm x 0.750 in. reach gasket seat spark plug recommended.
ATK High Performance Aluminum Cylinder Heads for Small Block Chevrolet
Outfit your top end with a set of these assembled ATK High Performance aluminum cylinder heads for small block Chevrolet. They're cast, machined, and assembled with A356 aluminum alloy. The heads feature the latest port designs for maximum efficiency and increased power, and improved stock exhaust port location for better header fitment.
ATK High Performance aluminum cylinder heads for small block Chevrolet include:
* 2.020 in. stainless steel, swirl polished with undercut stem intake valves
* 1.600 in. stainless steel, swirl polished with undercut stem exhaust valves
* Manganese bronze valve guides
* Alloy valve seats
* 1.437 in. diameter valve springs (.600 in. max valve lift)
* Chromoly 7-degree valve spring retainers
* Single groove 7-degree valve locks
* Valve spring locators
* 5/16 in. flat pushrod guideplates
* 3/8-24 in. rocker arm studs
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