Doug's Headers - D930-C

Doug's Headers D930-C Side Tubes Corvette Sidemount Chrome

Doug's Headers D930-C Side Tubes Corvette Sidemount Chrome

Part Number: D930-C / UPC 694342534837
  • Doug's Headers D930-C Side Tubes Corvette Sidemount Chrome

Product Info
  • 4" diameter side tubes designed to be used with Doug's Sidemount Headers
  • Slip on fit with pinch clamp for a leak proof seal
  • Heavy 16 gauge tubing... longer life
  • Designed for use with Doug's side pipe mufllers
  • Header Side Tubes are pre-polished to remove scratches before chrome is applied for that show quality appearance

 

 

Applications and Footnotes

Chevrolet - Corvette

    EMISSION       AUTO STD TUBE COLLECTOR PORT
YEARS ENGINES CODE A/C P/B P/S COL FLR COL FLR SIZE (in.) SIZE (in.) SHAPE
63 - 83 265-400 Y Y Y N Y N Y 1 7/8 4 REC
Big block frame stands and motor mounts must be used to insure proper engine location and header fit.
Does not fit angle plug heads
Installation requires left side A/C bracket part number H7608.1979 and later vehicles with short compressors can use the stock bracket.

Chevrolet - Corvette

    EMISSION       AUTO STD TUBE COLLECTOR PORT
YEARS ENGINES CODE A/C P/B P/S COL FLR COL FLR SIZE (in.) SIZE (in.) SHAPE
63 - 89 396-502 Y Y Y N Y N Y 2 1/8 4 RD
Big block frame stands and motor mounts must be used to insure proper engine location and header fit.
Does not fit angle plug heads
Installation requires left side A/C bracket part number H7608.1979 and later vehicles with short compressors can use the stock bracket.

 

 

Applications and Footnotes

Chevrolet - Corvette

YEARS 63 - 83
ENGINES 265-400
EMISSION CODE
A/C Y
P/B Y
P/S Y
AUTO COL N
AUTO FLR Y
STD COL N
STD FLR Y
TUBE SIZE (in.) 1 7/8
COLLECTOR SIZE (in.) 4
PORT SHAPE REC
Big block frame stands and motor mounts must be used to insure proper engine location and header fit.
Does not fit angle plug heads
Installation requires left side A/C bracket part number H7608.1979 and later vehicles with short compressors can use the stock bracket.

Chevrolet - Corvette

YEARS 63 - 89
ENGINES 396-502
EMISSION CODE
A/C Y
P/B Y
P/S Y
AUTO COL N
AUTO FLR Y
STD COL N
STD FLR Y
TUBE SIZE (in.) 2 1/8
COLLECTOR SIZE (in.) 4
PORT SHAPE RD
Big block frame stands and motor mounts must be used to insure proper engine location and header fit.
Does not fit angle plug heads
Installation requires left side A/C bracket part number H7608.1979 and later vehicles with short compressors can use the stock bracket.

 

 

Key for abbreviations and acronyms
2V Two valve cylinder head
DP Dual Smog Pump (emissions device)
PSIG Pounds Per Square Inch Gauge
3V Three valve cylinder head
E.O. Executive Order
RD Round Port
4V Four valve cylinder head
EGR Exhaust Gas Recirculation (emissions device)
REC Rectangle Port
A/C Air Conditioning
FLR Floor
SAP Same As (cylinder head) Port
AUTO Automatice Transmission
MCTBC Metallic Ceramic Thermal Barrier Coating
SP Single Smog Pump (emissions device)
COL Column shift
OVL Oval Port
STD Standard Transmission
COLL Collector
P/B Power Brakes
T.P.I. Tuned Port Injection
DIA Diameter
P/S Power Steering

 

 

Highlights
  • 4" diameter side tubes designed to be used with Doug's Sidemount Headers
  • Slip on fit with pinch clamp for a leak proof seal
  • Heavy 16 gauge tubing... longer life
  • Designed for use with Doug's side pipe mufllers
  • Header Side Tubes are pre-polished to remove scratches before chrome is applied for that show quality appearance

Applications and Footnotes

Chevrolet - Corvette
YEARS 63 - 83
ENGINES 265-400
EMISSION CODE
A/C Y
P/B Y
P/S Y
AUTO COL N
AUTO FLR Y
STD COL N
STD FLR Y
TUBE SIZE (in.) 1 7/8
COLLECTOR SIZE (in.) 4
PORT SHAPE REC
Big block frame stands and motor mounts must be used to insure proper engine location and header fit.
Does not fit angle plug heads
Installation requires left side A/C bracket part number H7608.1979 and later vehicles with short compressors can use the stock bracket.

Chevrolet - Corvette
YEARS 63 - 89
ENGINES 396-502
EMISSION CODE
A/C Y
P/B Y
P/S Y
AUTO COL N
AUTO FLR Y
STD COL N
STD FLR Y
TUBE SIZE (in.) 2 1/8
COLLECTOR SIZE (in.) 4
PORT SHAPE RD
Big block frame stands and motor mounts must be used to insure proper engine location and header fit.
Does not fit angle plug heads
Installation requires left side A/C bracket part number H7608.1979 and later vehicles with short compressors can use the stock bracket.

Key for abbreviations and acronyms
2V Two valve cylinder head
DP Dual Smog Pump (emissions device)
PSIG Pounds Per Square Inch Gauge
3V Three valve cylinder head
E.O. Executive Order
RD Round Port
4V Four valve cylinder head
EGR Exhaust Gas Recirculation (emissions device)
REC Rectangle Port
A/C Air Conditioning
FLR Floor
SAP Same As (cylinder head) Port
AUTO Automatice Transmission
MCTBC Metallic Ceramic Thermal Barrier Coating
SP Single Smog Pump (emissions device)
COL Column shift
OVL Oval Port
STD Standard Transmission
COLL Collector
P/B Power Brakes
T.P.I. Tuned Port Injection
DIA Diameter
P/S Power Steering

Emissions Code Key

The application guide above specifies which Emissions Code applies to this part. Doug's Headers uses a voluntary product identification program whereby all mission-sensitive products can be identified by placing numbered labels in product packaging and listing corresponding numeric codes next to each part number. The corresponding numbers and explanations are as follows:

This Product has been granted a California Air Resources Board (CARB) "E.O" (Executive Order) Exemption, or is considered a Direct Replacement or Consolidated Replacement part. It is 50 State Legal when installed on the appropriate vehicle per the Manufacturer Application guide and Installation Instructions

This product is Legal for use on 1974 and older non catalyst equipped vehicles and is considered a "replacement part" per California Air Resources Board regulations, as long as ALL emissions sensitive components are retained, including A.I.R., EGR, Heat Risers etc. Failure to retain any of these components, or use on any 1975 or newer catalytic converter equipped car would render this product Illegal for Street or Off Highway Use in California, or in states that have adopted California Emissions regulations and may only be used for Closed Course Competition.

This product is Not legal for Street or Off Highway use in California or in states that have adopted California Emissions Regulations and is only intended for Closed Course Competition use, except 1965 and Older US manufactured California Certified vehicles, 1967 or older US manufactured Federally Certified vehicles, or 1967 and older Foreign manufactured vehicles which may have any aftermarket add-on or modified part installed as long as the vehicle can still meet the tailpipe emission standards for the year of the vehicle and retain any original or retrofit crankcase control (PCV) devices and NOx device required for the year of the vehicle.

Additional Information

Doug's CORVETTE HEADER SIDE TUBES Chrome Header development and design is complex and requires a substantial amount of time and resources to do the job right! Many manufacturers are unwilling to make the commitment and instead offer compromised headers at lower prices. Doug's will not compromise performance, quality or fit to compete with inferior designs at cheap prices. Every Doug's header is tuned with the proper tube size and length to efficiently remove all the exhaust from each cylinder, reducing pumping losses resulting in a dramatic increases in horsepower and torque. Doug's headers are carefully developed on the vehicles they are intended to fit and are re-checked numerous times during the design and manufacturing process.
Related Product: D381-C

Related Products: D380-C+D930-C
Related Products: D381-C+D930-C

Reviews

Doug's Headers - D930-C

Doug's Headers D930-C Side Tubes Corvette Sidemount Chrome

Doug's Headers D930-C Side Tubes Corvette Sidemount Chrome

Part Number: D930-C / UPC 694342534837
$499.95
$499.95

Shipping calculated at checkout.
Part Number: D930-C / UPC 694342534837
  • Free shipping on $99+ orders in lower 48 states
  • 90-day return policy
  • We’re here to help! Call us on 909-599-5955
Emissions code

Emissions Code

Continue Reading to Understand Emissions Codes
View full details

Product Info
  • 4" diameter side tubes designed to be used with Doug's Sidemount Headers
  • Slip on fit with pinch clamp for a leak proof seal
  • Heavy 16 gauge tubing... longer life
  • Designed for use with Doug's side pipe mufllers
  • Header Side Tubes are pre-polished to remove scratches before chrome is applied for that show quality appearance

 

 

Applications and Footnotes

Chevrolet - Corvette

    EMISSION       AUTO STD TUBE COLLECTOR PORT
YEARS ENGINES CODE A/C P/B P/S COL FLR COL FLR SIZE (in.) SIZE (in.) SHAPE
63 - 83 265-400 Y Y Y N Y N Y 1 7/8 4 REC
Big block frame stands and motor mounts must be used to insure proper engine location and header fit.
Does not fit angle plug heads
Installation requires left side A/C bracket part number H7608.1979 and later vehicles with short compressors can use the stock bracket.

Chevrolet - Corvette

    EMISSION       AUTO STD TUBE COLLECTOR PORT
YEARS ENGINES CODE A/C P/B P/S COL FLR COL FLR SIZE (in.) SIZE (in.) SHAPE
63 - 89 396-502 Y Y Y N Y N Y 2 1/8 4 RD
Big block frame stands and motor mounts must be used to insure proper engine location and header fit.
Does not fit angle plug heads
Installation requires left side A/C bracket part number H7608.1979 and later vehicles with short compressors can use the stock bracket.

 

 

Applications and Footnotes

Chevrolet - Corvette

YEARS 63 - 83
ENGINES 265-400
EMISSION CODE
A/C Y
P/B Y
P/S Y
AUTO COL N
AUTO FLR Y
STD COL N
STD FLR Y
TUBE SIZE (in.) 1 7/8
COLLECTOR SIZE (in.) 4
PORT SHAPE REC
Big block frame stands and motor mounts must be used to insure proper engine location and header fit.
Does not fit angle plug heads
Installation requires left side A/C bracket part number H7608.1979 and later vehicles with short compressors can use the stock bracket.

Chevrolet - Corvette

YEARS 63 - 89
ENGINES 396-502
EMISSION CODE
A/C Y
P/B Y
P/S Y
AUTO COL N
AUTO FLR Y
STD COL N
STD FLR Y
TUBE SIZE (in.) 2 1/8
COLLECTOR SIZE (in.) 4
PORT SHAPE RD
Big block frame stands and motor mounts must be used to insure proper engine location and header fit.
Does not fit angle plug heads
Installation requires left side A/C bracket part number H7608.1979 and later vehicles with short compressors can use the stock bracket.

 

 

Key for abbreviations and acronyms
2V Two valve cylinder head
DP Dual Smog Pump (emissions device)
PSIG Pounds Per Square Inch Gauge
3V Three valve cylinder head
E.O. Executive Order
RD Round Port
4V Four valve cylinder head
EGR Exhaust Gas Recirculation (emissions device)
REC Rectangle Port
A/C Air Conditioning
FLR Floor
SAP Same As (cylinder head) Port
AUTO Automatice Transmission
MCTBC Metallic Ceramic Thermal Barrier Coating
SP Single Smog Pump (emissions device)
COL Column shift
OVL Oval Port
STD Standard Transmission
COLL Collector
P/B Power Brakes
T.P.I. Tuned Port Injection
DIA Diameter
P/S Power Steering

 

 

Highlights
  • 4" diameter side tubes designed to be used with Doug's Sidemount Headers
  • Slip on fit with pinch clamp for a leak proof seal
  • Heavy 16 gauge tubing... longer life
  • Designed for use with Doug's side pipe mufllers
  • Header Side Tubes are pre-polished to remove scratches before chrome is applied for that show quality appearance

Applications and Footnotes

Chevrolet - Corvette
YEARS 63 - 83
ENGINES 265-400
EMISSION CODE
A/C Y
P/B Y
P/S Y
AUTO COL N
AUTO FLR Y
STD COL N
STD FLR Y
TUBE SIZE (in.) 1 7/8
COLLECTOR SIZE (in.) 4
PORT SHAPE REC
Big block frame stands and motor mounts must be used to insure proper engine location and header fit.
Does not fit angle plug heads
Installation requires left side A/C bracket part number H7608.1979 and later vehicles with short compressors can use the stock bracket.

Chevrolet - Corvette
YEARS 63 - 89
ENGINES 396-502
EMISSION CODE
A/C Y
P/B Y
P/S Y
AUTO COL N
AUTO FLR Y
STD COL N
STD FLR Y
TUBE SIZE (in.) 2 1/8
COLLECTOR SIZE (in.) 4
PORT SHAPE RD
Big block frame stands and motor mounts must be used to insure proper engine location and header fit.
Does not fit angle plug heads
Installation requires left side A/C bracket part number H7608.1979 and later vehicles with short compressors can use the stock bracket.

Key for abbreviations and acronyms
2V Two valve cylinder head
DP Dual Smog Pump (emissions device)
PSIG Pounds Per Square Inch Gauge
3V Three valve cylinder head
E.O. Executive Order
RD Round Port
4V Four valve cylinder head
EGR Exhaust Gas Recirculation (emissions device)
REC Rectangle Port
A/C Air Conditioning
FLR Floor
SAP Same As (cylinder head) Port
AUTO Automatice Transmission
MCTBC Metallic Ceramic Thermal Barrier Coating
SP Single Smog Pump (emissions device)
COL Column shift
OVL Oval Port
STD Standard Transmission
COLL Collector
P/B Power Brakes
T.P.I. Tuned Port Injection
DIA Diameter
P/S Power Steering

Emissions Code Key

The application guide above specifies which Emissions Code applies to this part. Doug's Headers uses a voluntary product identification program whereby all mission-sensitive products can be identified by placing numbered labels in product packaging and listing corresponding numeric codes next to each part number. The corresponding numbers and explanations are as follows:

This Product has been granted a California Air Resources Board (CARB) "E.O" (Executive Order) Exemption, or is considered a Direct Replacement or Consolidated Replacement part. It is 50 State Legal when installed on the appropriate vehicle per the Manufacturer Application guide and Installation Instructions

This product is Legal for use on 1974 and older non catalyst equipped vehicles and is considered a "replacement part" per California Air Resources Board regulations, as long as ALL emissions sensitive components are retained, including A.I.R., EGR, Heat Risers etc. Failure to retain any of these components, or use on any 1975 or newer catalytic converter equipped car would render this product Illegal for Street or Off Highway Use in California, or in states that have adopted California Emissions regulations and may only be used for Closed Course Competition.

This product is Not legal for Street or Off Highway use in California or in states that have adopted California Emissions Regulations and is only intended for Closed Course Competition use, except 1965 and Older US manufactured California Certified vehicles, 1967 or older US manufactured Federally Certified vehicles, or 1967 and older Foreign manufactured vehicles which may have any aftermarket add-on or modified part installed as long as the vehicle can still meet the tailpipe emission standards for the year of the vehicle and retain any original or retrofit crankcase control (PCV) devices and NOx device required for the year of the vehicle.

Additional Information

Doug's CORVETTE HEADER SIDE TUBES Chrome Header development and design is complex and requires a substantial amount of time and resources to do the job right! Many manufacturers are unwilling to make the commitment and instead offer compromised headers at lower prices. Doug's will not compromise performance, quality or fit to compete with inferior designs at cheap prices. Every Doug's header is tuned with the proper tube size and length to efficiently remove all the exhaust from each cylinder, reducing pumping losses resulting in a dramatic increases in horsepower and torque. Doug's headers are carefully developed on the vehicles they are intended to fit and are re-checked numerous times during the design and manufacturing process.
Related Product: D381-C

Related Products: D380-C+D930-C
Related Products: D381-C+D930-C

Reviews

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