Corvette-Style 2-1/2 Inch Ram Horn Exhaust Manifolds, Pair

These "rams horn" cast iron exhaust manifolds were patterned off the 1962-63 327 Corvette but are not OEM remanufactured manifolds (no casting numbers). They feature the big 2-1/2" diameter outlets and have provisions to accept original alternator type brackets. They are the perfect addition to a retro 327 style build: 365hp L76, 375hp L84, or 350hp L79 (all came with 2-1/2" outlets).

These Chevy ram horn manifolds are copies of the original1962-63 Corvette manifolds and can be used on almost any small block engine up to 1999. The cast in brackets are for the water tank on the drivers side and generator bracket on the passenger side. These can be cut off and smoothed per customers preference. These are a square port configuration with 1-5/16” top to bottom and also side to side. Compare to your head port size for compatibility.

• Modeled after 1962-63 327 Corvette manifolds
• Works on most small blocks up to 1999
• 2-1/2" diameter outlets
• 1-5/16" square ports
• Use with 3 bolt header reducer/collector
• Includes (1) left and (1) right side manifold
• Gaskets included (manifold to cylinder head and outlet collector gaskets)
• Manifold to cylinder head bolts/hardware and collector stud/hardware are included

Manifold Dimension Chart (JPG)

• Header Dimension A: 4.00"  Manifold Dimensions (GIF)
• Overall Length: 20.25"
• Overall Height: 6.50"
• Center to Center: 3.50"
• Collector Diameter: 2.50"
• Notes: Center of head mounting bolt to bottom of collector flange is 4-3/16", to highest point of manifold is 2-3/4"

9300327-R

• Header Dimension A: 4.0313"  Manifold Dimensions (GIF)
• Overall Length: 21.00"
• Center to Center: 4.50"
• Collector Diameter: 2.50"
• Inlet Size: 1.3125"
• Notes: Distance from head mounting bolt to collector flange bottom is 4.1875". Center of head mount to highest point is 2.75".