Exhaust Risers and Elbows - Chevrolet - GM

Water cooled center discharge riser (3/4" N.P.T. cooling hose connection). Standard for use with 3" I.D. exhaust hose.

Fits these applications:

• Chevrolet small block V8 283, 302, 305, 307, 327 and 350 C.I.D., all models (aluminum center riser generic).
• Chevrolet big block V8 427 and 454 C.I.D., all models (aluminum center riser generic).

The Barr Center Riser is a two-piece aluminum manifold/riser ideally suited for replacement use where riser protection is required. It uses flexible exhaust hose, which makes it easy to connect to existing exhaust lines, and all elbows (cast iron) can swivel inboard or outboard for a perfect fit. The manifold/riser is designed to limit back pressure on the engine, resulting in more efficient engine performance. The manifold and riser can be reversed and will fit either side of the engine. Cast of 356 T6 aluminum, well suited for fresh water marine applications.

• Includes 20-0107P riser mounting package to mount to the manifold.
• One year warranty.
• Not recommended for salt water use. Barr Marine does not warrant this product in salt water applications due to extreme corrosion.

Compatible parts:

• CHV-1-92 water cooled center discharge manifold to fit the small block GM engine (3/4" N.P.T. cooling hose connections). All years.
• CHVA-1-92 water cooled center discharge manifold to fit the big block GM engine (3/4" N.P.T. cooling hose connections). All years.
• 20-0107 water cooled center discharge riser (3/4" N.P.T. cooling hose connection). Standard for use with 4" I.D. exhaust hose.
• 1-0105 center riser manifold-to-riser gasket for fresh water cooling.
• 1-0107 center riser manifold-to-riser gasket (raw water cooling).
• 20-0087P 90 degree exhaust elbow adaptor (includes adaptor, hose and clamps). For use with 3" I.D. exhaust hose.
• 20-0089P 30 degree exhaust elbow adaptor (includes adaptor, hose and clamps). For use with 3" I.D. exhaust hose.
• 20-0093P 90 degree exhaust elbow adaptor (includes adaptor, hose and clamps). For use with 3 1/2" or 4" I.D. exhaust hose.
• 20-0107P riser mounting package for both 20-0107 and 20-0108.
• CHV-1-92P manifold mounting package (includes bolts and pipe plugs).
• CHV-47-0000 manifold to cylinder head gasket.
• CHVA-1-92P manifold mounting package (includes bolts and pipe plugs).
• CHVA-47-0000 manifold to cylinder head gasket.

Manufactured by Barr Marine. Part number 20-0108.

Water cooled center discharge riser (3/4" N.P.T. cooling hose connection). Standard for use with 4" I.D. exhaust hose.

Fits these applications:

• Chevrolet small block V8 283, 302, 305, 307, 327 and 350 C.I.D., all models (aluminum center riser generic).
• Chevrolet big block V8 427 and 454 C.I.D., all models (aluminum center riser generic).

The Barr Center Riser is a two-piece aluminum manifold/riser ideally suited for replacement use where riser protection is required. It uses flexible exhaust hose, which makes it easy to connect to existing exhaust lines, and all elbows (cast iron) can swivel inboard or outboard for a perfect fit. The manifold/riser is designed to limit back pressure on the engine, resulting in more efficient engine performance. The manifold and riser can be reversed and will fit either side of the engine. Cast of 356 T6 aluminum, well suited for fresh water marine applications.

• Includes 20-0107P riser mounting package to mount to the manifold.
• One year warranty.
• Not recommended for salt water use. Barr Marine does not warrant this product in salt water applications due to extreme corrosion.

Compatible parts:

• CHV-1-92 water cooled center discharge manifold to fit the small block GM engine (3/4" N.P.T. cooling hose connections). All years.
• CHVA-1-92 water cooled center discharge manifold to fit the big block GM engine (3/4" N.P.T. cooling hose connections). All years.
• 20-0108 water cooled center discharge riser (3/4" N.P.T. cooling hose connection). Standard for use with 3" I.D. exhaust hose.
• 1-0105 center riser manifold-to-riser gasket for fresh water cooling.
• 1-0107 center riser manifold-to-riser gasket (raw water cooling).
• 20-0087P 90 degree exhaust elbow adaptor (includes adaptor, hose and clamps). For use with 3" I.D. exhaust hose.
• 20-0089P 30 degree exhaust elbow adaptor (includes adaptor, hose and clamps). For use with 3" I.D. exhaust hose.
• 20-0093P 90 degree exhaust elbow adaptor (includes adaptor, hose and clamps). For use with 3 1/2" or 4" I.D. exhaust hose.
• 20-0107P riser mounting package for both 20-0107 and 20-0108.
• CHV-1-92P manifold mounting package (includes bolts and pipe plugs).
• CHV-47-0000 manifold to cylinder head gasket.
• CHVA-1-92P manifold mounting package (includes bolts and pipe plugs).
• CHVA-47-0000 manifold to cylinder head gasket.

Manufactured by Barr Marine. Part number 20-0107.