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LM -12 Series Cylinder HeadsAs-Cast Runners and Combustion Chambers
- LM -12 Series Cylinder Heads
- As-Cast Intake Ports
- As-Cast Combustion Chambers
- 2.180'' Intake / 1.625'' Exhaust Valve Sizes
- Angle Plug
- Bare, 2/pkg.
This head is sold as an unassembled bare casting. It will require professional porting of the runners and combustion chambers. It is finished machined on deck surfaces, inatke/exhaust flanges, etc. and includes valve guides and valve seats installed. This head does NOT include studs, valves, springs retainers or locks.
Cylinder Head Specifications - Intake Port Volume: As-Cast (No Porting)
- Combustion Chamber Volume: As-Cast
- Valve Sizes: 2.180' Intake / 1.625' Exhaust ( 11/32' Stem Diameter )
- Spark Plug Configuration: AngledFacts and Related Components
- Torque Heads: 70 ft-lb.
- Torque Rocker Studs: 40-45 ft-lb.
- Intake Gasket: Brodix p/n 158-MG1215
- Head Gasket: Fel-Pro p/n 375-1003 (350ci) / 375-1004 (400ci) or Cometic p/n 245-C5399 (350ci) / 245-C5403 (400ci)
- Exhaust Gasket: Fel-Pro p/n 375-1407
- Head Studs: Brodix SK HSSB 13 (Aluminum Block)
- Spark Plug Specs: 14mm Thread, .750' (3/4') Reach, Gasket Seat
- Valve Angle: 12°
- Angle Milling: .0065' per cc
- Flat Milling: .0055' per cc
- Pushrod Slots: 85/134
- Stud Girdle: N/A
- Rocker Arms: Shaft System with 85/134 Spacing (Check heads for intake offset) - T&D 22076
- Lifters: .180' Offset
- Pistons: Special 12°
- Pushrods: Special Length
- Intake Face Angle: 5°
- Exhaust Pattern: Standard and Stahl
- Valve Centerline: 85/134
- Spring Pockets: 1.550' Out of the Box, May be cut to 1.625' - No larger or deeper
- Accessory Bolt Holes are Drilled
- Recommended Intake Manifold: Edelbrock Victor 18° 2.9 Intake Manifold p/n 350-2955
- Valley Plate: GM 24502652
Part TypeCylinder Head
BrandBRODIX
Part CategoryPerformance Parts
Part FitmentSemi Universal
Vendor Part Number1120002
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
