CYLINDER block
 A. 88958630
Ecotec Race Cylinder Block
• Foundation for truly fast compacts
• Fully-machined aluminum block with 3.400" bores and 8.700" deck height
• Cylinders use steel liners machined for stainless steel O-rings and head gasket P/N 88958614
• High quality 1/2" head studs and 7/16" main studs are included
CYLINDER HEADS B. 88958640
Ecotec High Performance CNC Ported Cylinder Head
• Aluminum cylinder head is fully CNC machined with highperformance- oriented ports and three-angle valve seats
• Deck surface has O-ring grooves
• Accepts a complete stock valvetrain
• Flow sheet included
• Uses head gasket kit P/N 88958614 (not included) 88958619
Ecotec “Street” CNC Ported Cylinder Head (not shown)
• Aluminum cylinder head is fully CNC machined with highperformance- oriented ports and three-angle valve seats
• Accepts a complete stock valvetrain
• Flow sheet included
• Uses stock head gasket
• Fits L61 2.2L only 
C. 88958632
Exhaust Header Flange
• Use this .375"- thick steel flange as the starting point for your custom header system
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