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NEW IMCA Cast Iron Heads Fits 1969 ? 1985 5.7L 350 cid. Chevrolet Small Block V8

Universal, Intake Runner 178cc +/-, Combustion Chamber 76cc +/-, With Heat Riser, 69-86 Intake Manifold Bolt Pattern, 7-Bolt Hole Exhaust Mounting, Straight Spark Plug, Perimeter Valve Cover Holes - Made from the highest grade cast iron.

Intake Pattern: Features the traditional 6-bolt per side (12-bolt total) intake pattern used until 1986.
Valve Covers: Designed for 4-bolt perimeter-mount valve covers.
Casting Identification: These new units typically replace original factory casting numbers such as #882, #993, #487, and #441.
Valves: Standard assembled configurations often include 1.94" intake and 1.50" exhaust valves.
Spark Plugs: Most standard replacement castings use a straight spark plug design to ensure clearance with original exhaust manifolds.

Replaces casting numbers 882, 993, AND OTHER CARB STYLES

1.94" Intake valve Size
1.50" Exhaust valve Size
178cc +/- intake runner
64cc +/- combustion chamber
Springs Pocket STOCK
OEM style combustion chamber
7 bolt hole exhaust manifold mounting
Thicker decks for greater strength
CNC machined guides and seats
Superior port finishes for increased flow
3-angle valve finish
Machined integral guides
Hardened exhaust seats
Redesigned water flow for greater thermal conductivity
Outer (perimeter) valve cover mounting holes)
1969 ? 1985 intake manifold bolt pattern