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CHEVROLET V8-283, 302, 305, 307, 327 and 350 C.I.D.
ALL MODELS CENTER RISER GENERIC
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Part Number and Description

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. 
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20-0108  Water cooled center discharge riser (3/4” N.P.T. cooling hose connection). Standard for use with 3” I.D. exhaust hose. 
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20-0107  Water cooled center discharge riser (3/4” N.P.T. cooling hose connection). Standard for use with 4” I.D. exhaust hose. 
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1-0105  Center riser manifold-to-riser gasket for fresh water cooling. 
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1-0107  Center riser manifold-to-riser gasket (raw water cooling). 
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20-0107P  Riser mounting package for both 20-0107 and 20-0108. 
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20-0087P  90 degree exhaust elbow adaptor (includes adaptor, hose and clamps). For use with 3” I.D. exhaust hose. 
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20-0089P  30 degree exhaust elbow adaptor (includes adaptor, hose and clamps). For use with 3” I.D. exhaust hose. 
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20-0093P  90 degree exhaust elbow adaptor (includes adaptor, hose and clamps). For use with 3 1/2” or 4” I.D. exhaust 
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CHV-1-92P  Manifold mounting package (includes bolts and pipe plugs). 
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CHV-47-0000  Manifold to cylinder head gasket. 

Note: 
Manifold includes CHV 1 92P (mounting package to head) and risers include 20 0107P (mounting package to manifold). 

CHEVROLET BIG BLOCK 427 AND 454 C.I.D

ALL MODELS CENTER RISER GENERIC
Picture

Part Number and Description

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. 
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20-0108  
Water cooled center discharge riser (3/4” N.P.T. cooling hose connection). Standard for use with 3” I.D. exhaust hose. 
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20-0107  
Water cooled center discharge riser (3/4” N.P.T. cooling hose connection). Standard for use with 4” I.D. exhaust hose. 
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1-0105  
Center riser manifold-to-riser gasket for fresh water cooling. 
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1-0107  
Center riser manifold-to-riser gasket (raw water cooling). 
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20-0107P  
Riser mounting package for both 20-0107 and 20-0108. 
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20-0087P  
90 degree exhaust elbow adaptor (includes adaptor, hose and clamps). For use with 3” I.D. exhaust hose. 
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20-0089P  
30 degree exhaust elbow adaptor (includes adaptor, hose and clamps). For use with 3” I.D. exhaust hose. 
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20-0093P  
90 degree exhaust elbow adaptor (includes adaptor, hose and clamps). For use with 3 1/2” or 4” I.D. exhaust hose.
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CHVA-1-92P  Manifold mounting package (includes bolts and pipe plugs). 
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CHVA-47-0000  Manifold to cylinder head gasket. 

Note:
Manifold includes CHV 1 92P (mounting package to head)
and risers include 20 0107P (mounting package to manifold). 

The center riser is a two-piece aluminum manifold/riser ideally suited for replacement use where riser protection is required. The Barr Center Riser aluminum manifold/riser uses flexible exhaust hose which facilitates connection to existing exhaust lines. All elbows (cast iron) can swivel inboard or outboard for perfect fit. The Barr Center Riser aluminum manifold/riser is designed to limit back presure on the engine, resulting in more efficient engine performance. The manifold and riser can be reversed and will fit either side of the engine. 

The Barr Center Riser aluminum manifold/riser is cast of 356 T6 aluminum, well suited for fresh water marine applications. Barr Marine’s Center Riser aluminum manifold/riser come wih a one year warranty. However, Barr Marine By EDM does not recommend use of this product in salt water applications and does not warrant this product in salt water due to extreme corrosion. 

PRODUCT INSTALLATION GUIDELINES
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Our Company

About Us
Engine Exhaust Systems
Cross Over Reference Guide 
Catalog
Product Installation Guide
Find a Distributor

Manifolds and Risers

Chevrolet Aluminum Exhaust
Chris Craft
Chrysler
Crusader
Detroit Diesel
Flagship
Graymarine
Indmar
Interceptor
Mercruiser
OMC
Perkins
Pleasurecraft
Universal Atomic 4
Volvo Penta
Waukesha

Parts

Adaptor Bell Housings
Center Discharge Riser
Center Dishcharge Manifold & Riser System Dimensions
Exhaust Risers & Connectors
Flame Arrestors
Rubber Engine Mounts
Thermostats & Thermostat Assemblies

Warranty

3 Year Warranty
1 Year Warranty
Barr Marine by EDM |  100 Douglas Way Natural Bridge, VA  | 540.291.4180 
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