Chevrolet - GM - V8 Big Block

Water cooled center discharge manifold to fit the big block GM engine (3/4" N.P.T. cooling hose connections). All years.

Engine application: Chevrolet V8 OHV 396, 427 and 454 C.I.D., 1966 and up.

Fits 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 the manifold mounting package to the cylinder head (CHVA-1-92P).
• 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:

• 20-0107 water cooled center discharge riser (3/4" N.P.T. cooling hose connection). Standard for use with 4" I.D. exhaust hose.
• 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.
• 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 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.

Replaces Marine Power 0991-110, Osco CW994, Mallory 9-40102 and GLM 56240.

Engine application: Chevrolet V8 OHV 396, 427 and 454 C.I.D., 1966 and up.

Fits these applications:

• Chris-Craft V8 454 C.I.D., all models (center riser generic).
• Crusader V8 427 and 454 C.I.D., all models (center riser generic).
• Indmar V8 427 and 454 C.I.D., all inboard models (center riser generic).
• MerCruiser V8 454 and 502 C.I.D., all models (center riser generic).

Barr Marine castings have a thicker interior wall, are painted to match original manufacturer colors and are packed in foam for added protection during shipping and storage. Barr manifolds and exhaust connectors are designed to minimize back pressure, and in many cases more r.p.m.'s are achieved after replacing an OEM manifold with Barr replacement parts.

• Includes all plugs, gaskets and mounting hardware to the cylinder head.
• 3 year limited warranty on Barr exhaust manifolds, risers and exhaust connectors (1 year when used for commercial purposes).

Compatible parts:

• 20-0082 water cooled center discharge riser (3/4" N.P.T. cooling hose connection). Standard for use with 3" I.D. exhaust hose.
• 20-0100 water cooled center discharge riser (3/4" N.P.T. cooling hose connection). Standard for use with 4" I.D. exhaust hose.
• 20-0097 3" spacer block (complete with mounting hardware, gasket and 3/4" pipe plug). Capable of stacking.
• 1-0104P adaptor package for fresh water cooled manifold (includes gaskets and block off plate).
• 1-0105 center riser manifold-to-riser gasket for fresh water cooling.
• 1-0106P adaptor package for raw water cooling. Used in pre-heating applications (includes gaskets and block off plate with vent hole).
• 1-0107 center riser manifold-to-riser gasket (raw water cooling).
• 20-0082P riser mounting package for both 20-0082 and 20-0100.
• 20-0082SS P stainless steel mounting package (with brass plugs) for both 20-0082 and 20-0100.
• 20-0084P straight exhaust adaptor (includes adaptor, hose and clamps). For use with 3 1/2" I.D. exhaust hose.
• 20-0085P straight exhaust adaptor (includes adaptor, hose and clamps). For use with 2 1/2" I.D. exhaust hose.
• 20-0086P 90 degree exhaust elbow adaptor (includes adaptor, hose and clamps). For use with 2 1/2" I.D. exhaust hose.
• 20-0087P 90 degree exhaust elbow adaptor (includes adaptor, hose and clamps). For use with 3" I.D. exhaust hose.
• 20-0088P 30 degree exhaust elbow adaptor (includes adaptor, hose and clamps). For use with 2 1/2" I.D. exhaust hose.
• 20-0089P 30 degree exhaust elbow adaptor (includes adaptor, hose and clamps). For use with 3" I.D. exhaust hose.
• 20-0092P 45 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.
• CHVA-1-84P manifold mounting package (includes bolts and pipe plugs).
• CHVA-1-84SS-P stainless steel manifold mounting package (includes stainless bolts and brass plugs).
• CHVA-47-0000 manifold to cylinder head gasket.
• MC-27-47487 alternator bracket.

Manufactured by Barr Marine. Part number CHVA-1-84.

Water cooled log style exhaust manifold port side (left). Used in model years 1958-65 GM 348 and 409 marine engine applications. Chevy Big Block.

Engine application: Chevrolet V8 OHV 348 and 409 C.I.D., 1958-65.

Barr Marine castings have a thicker interior wall, are painted to match original manufacturer colors and are packed in foam for added protection during shipping and storage. Barr manifolds and exhaust connectors are designed to minimize back pressure, and in many cases more r.p.m.'s are achieved after replacing an OEM manifold with Barr replacement parts.

• Manifold end plate and gasket listing: front end plate 1-0032, front gasket 1-0019, exhaust end plate 1-0025, exhaust end gasket 1-0019, header adaptor 1-0001.
• 3 year limited warranty on Barr exhaust manifolds, risers and exhaust connectors (1 year when used for commercial purposes).

Manufactured by Barr Marine. Part number CHVA-1-58L.

Water cooled log style exhaust manifold starboard side (right). Used in model years 1958-65 GM 348 and 409 marine engine applications. Chevy Big Block

Engine application: Chevrolet V8 OHV 348 and 409 C.I.D., 1958-65.

Barr Marine castings have a thicker interior wall, are painted to match original manufacturer colors and are packed in foam for added protection during shipping and storage. Barr manifolds and exhaust connectors are designed to minimize back pressure, and in many cases more r.p.m.'s are achieved after replacing an OEM manifold with Barr replacement parts.

• Manifold end plate and gasket listing: front end plate 1-0032, front gasket 1-0019, exhaust end plate 1-0025, exhaust end gasket 1-0019, header adaptor 1-0001.
• 3 year limited warranty on Barr exhaust manifolds, risers and exhaust connectors (1 year when used for commercial purposes).

Manufactured by Barr Marine. Part number CHVA-1-58R.