Hedman Performance Group

Photo of header reducers, gaskets and hardware included with Hedman Hedders

Photo of Hedman's Black-Maxx Satin Black Ceramic-metallic header finish.

H.D. Silver Long-Tube Headers For '63-82 Corvette with 283-400

ELITE-CORVETTE SB 63-82 1 5/8- BLACK MAXX

Part#63308

$835.41

Product Specifications

[PLEASE REVIEW THE FOLLOWING PRODUCT ATTRIBUTES & VEHICLE APPLICATION FOOTNOTES SPECIFIC TO YOUR VEHICLE, THOROUGHLY]

Tube Diameter 1-5/8 in.
Tube Style Long Tubes
Air Conditioning Yes
Automatic Transmission - Column Yes
Automatic Transmission - Floor Yes
Manual Transmission - Column No
Manual Transmission - Floor Yes
Power Steering Yes
Collector Attachment 3 in.
Collector Diameter 3 in.
Collector Size 3 in.
Collector Style BALL and SOCKET Style (Gasketless)
Reducer Outlet Size 2-1/2 in.
Exhaust System Dia 2-1/2 in.
Contents Header(s), new bolts, gasket(s) to head, reducer(s) and hardware, instructions
E.O. # No
Emissions Notes Not Legal For Street Use on '75-Later Model Years! Legal for off-road use only.
Finish BLACK MAXX Satin Black Ceramic-Metallic
Finish Type BLACK MAXX- Black Ceramic-Metallic Coating
Flange Style Standard
Flange Thickness 0.375 in.
Header Port Shape Oval Port
Header Style Long Tube
Notes 63-82 Corvette 283-400
Port Shape Oval
Material Mild Steel
Tube Design Standard
Tube Length Long Tubes
Tube Material Thickness 14g
Tube Size 1-5/8 in.
Variations 68306, 68308
with A.I.R. System No
with EGR No
Weld-Up No
Tuned No
Bolts/Studs Included Yes
Catalytic Converter(s) Included No
Collector Bolts Included Yes
Crossover Pipe Included No
Gasket Or Seal Included Yes
Header Fasteners Included Yes
Installation Hardware Included Yes
Motor Mounts Included No
Mounting Hardware Included Yes
Reducers Included Yes
Y-Pipe Included No
Quantity Sold as a pair.
Primary Tube Gauge 14g
Primary Tube Diameter (in) 1.625 in.
Package Contents Headers, ball and socket reducers (exhaust adapters), gaskets, mounting hardware
Header Material Mild Steel
Header Finish BLACK MAXX Satin Black Ceramic-Metallic
Cylinder Head Port Shape Oval
Cylinder Head Stock Profile Heads
Header Construction MILD STEEL- ELITE Heavy-Duty
Replacement Gasket 27520
Replacement Head Flange Gasket 27520
California Proposition 65 WARNING: Cancer & Reproductive Harm. For more info visit www.P65Warnings.ca.gov

Vehicle Applications

Chevrolet

Corvette

Year

C.I.D.

Liter

Block Type

Cylinders

Fuel Type

Drive Type

1963

327

Vehicle Specific Information
Air Conditioning	Not for '67-69 with A/C! 1970 and later with Large Piston A/C need bracket 20110
Power Steering	Yes
Auto Transmission - Column	Yes
Auto Transmission - Floor	Yes
Manual Transmission - Column	No
Manual Transmission - Floor	Yes
Footnotes	(1) Without smog injection or injection heads. (100) Will not fit steering damper inside front crossmember. (103) Will fit with angle plug heads (Chevy aluminum only, L98). (6) Modification to stock exhaust required to retain catalytic converter.
Emissions Notes	1974 and earlier vehicles WITHOUT A.I.R.; Does not require EO if existing emission controls are not removed.

1964

327

Vehicle Specific Information
Air Conditioning	Not for '67-69 with A/C! 1970 and later with Large Piston A/C need bracket 20110
Power Steering	Yes
Auto Transmission - Column	Yes
Auto Transmission - Floor	Yes
Manual Transmission - Column	No
Manual Transmission - Floor	Yes
Footnotes	(1) Without smog injection or injection heads. (100) Will not fit steering damper inside front crossmember. (103) Will fit with angle plug heads (Chevy aluminum only, L98). (6) Modification to stock exhaust required to retain catalytic converter.
Emissions Notes	1974 and earlier vehicles WITHOUT A.I.R.; Does not require EO if existing emission controls are not removed.

1965

327

Vehicle Specific Information
Air Conditioning	Not for '67-69 with A/C! 1970 and later with Large Piston A/C need bracket 20110
Power Steering	Yes
Auto Transmission - Column	Yes
Auto Transmission - Floor	Yes
Manual Transmission - Column	No
Manual Transmission - Floor	Yes
Footnotes	(1) Without smog injection or injection heads. (100) Will not fit steering damper inside front crossmember. (103) Will fit with angle plug heads (Chevy aluminum only, L98). (6) Modification to stock exhaust required to retain catalytic converter.
Emissions Notes	1974 and earlier vehicles WITHOUT A.I.R.; Does not require EO if existing emission controls are not removed.

1966

327

Vehicle Specific Information
Air Conditioning	Not for '67-69 with A/C! 1970 and later with Large Piston A/C need bracket 20110
Power Steering	Yes
Auto Transmission - Column	Yes
Auto Transmission - Floor	Yes
Manual Transmission - Column	No
Manual Transmission - Floor	Yes
Footnotes	(1) Without smog injection or injection heads. (100) Will not fit steering damper inside front crossmember. (103) Will fit with angle plug heads (Chevy aluminum only, L98). (6) Modification to stock exhaust required to retain catalytic converter.
Emissions Notes	1974 and earlier vehicles WITHOUT A.I.R.; Does not require EO if existing emission controls are not removed.

1967

327

Vehicle Specific Information
Air Conditioning	Not for '67-69 with A/C! 1970 and later with Large Piston A/C need bracket 20110
Power Steering	Yes
Auto Transmission - Column	Yes
Auto Transmission - Floor	Yes
Manual Transmission - Column	No
Manual Transmission - Floor	Yes
Footnotes	(1) Without smog injection or injection heads. (100) Will not fit steering damper inside front crossmember. (103) Will fit with angle plug heads (Chevy aluminum only, L98). (6) Modification to stock exhaust required to retain catalytic converter.
Emissions Notes	1974 and earlier vehicles WITHOUT A.I.R.; Does not require EO if existing emission controls are not removed.

1968

327

Vehicle Specific Information
Air Conditioning	Not for '67-69 with A/C! 1970 and later with Large Piston A/C need bracket 20110
Power Steering	Yes
Auto Transmission - Column	Yes
Auto Transmission - Floor	Yes
Manual Transmission - Column	No
Manual Transmission - Floor	Yes
Footnotes	(1) Without smog injection or injection heads. (100) Will not fit steering damper inside front crossmember. (103) Will fit with angle plug heads (Chevy aluminum only, L98). (6) Modification to stock exhaust required to retain catalytic converter.
Emissions Notes	1974 and earlier vehicles WITHOUT A.I.R.; Does not require EO if existing emission controls are not removed.

1969

350

Vehicle Specific Information
Air Conditioning	Not for '67-69 with A/C! 1970 and later with Large Piston A/C need bracket 20110
Power Steering	Yes
Auto Transmission - Column	Yes
Auto Transmission - Floor	Yes
Manual Transmission - Column	No
Manual Transmission - Floor	Yes
Footnotes	(1) Without smog injection or injection heads. (100) Will not fit steering damper inside front crossmember. (103) Will fit with angle plug heads (Chevy aluminum only, L98). (6) Modification to stock exhaust required to retain catalytic converter.
Emissions Notes	1974 and earlier vehicles WITHOUT A.I.R.; Does not require EO if existing emission controls are not removed.

1970

350

Vehicle Specific Information
Air Conditioning	Not for '67-69 with A/C! 1970 and later with Large Piston A/C need bracket 20110
Power Steering	Yes
Auto Transmission - Column	Yes
Auto Transmission - Floor	Yes
Manual Transmission - Column	No
Manual Transmission - Floor	Yes
Footnotes	(1) Without smog injection or injection heads. (100) Will not fit steering damper inside front crossmember. (103) Will fit with angle plug heads (Chevy aluminum only, L98). (6) Modification to stock exhaust required to retain catalytic converter.
Emissions Notes	1974 and earlier vehicles WITHOUT A.I.R.; Does not require EO if existing emission controls are not removed.

1971

350

Vehicle Specific Information
Air Conditioning	Not for '67-69 with A/C! 1970 and later with Large Piston A/C need bracket 20110
Power Steering	Yes
Auto Transmission - Column	Yes
Auto Transmission - Floor	Yes
Manual Transmission - Column	No
Manual Transmission - Floor	Yes
Footnotes	(1) Without smog injection or injection heads. (100) Will not fit steering damper inside front crossmember. (103) Will fit with angle plug heads (Chevy aluminum only, L98). (6) Modification to stock exhaust required to retain catalytic converter.
Emissions Notes	1974 and earlier vehicles WITHOUT A.I.R.; Does not require EO if existing emission controls are not removed.

1972

350

Vehicle Specific Information
Air Conditioning	Not for '67-69 with A/C! 1970 and later with Large Piston A/C need bracket 20110
Power Steering	Yes
Auto Transmission - Column	Yes
Auto Transmission - Floor	Yes
Manual Transmission - Column	No
Manual Transmission - Floor	Yes
Footnotes	(1) Without smog injection or injection heads. (100) Will not fit steering damper inside front crossmember. (103) Will fit with angle plug heads (Chevy aluminum only, L98). (6) Modification to stock exhaust required to retain catalytic converter.
Emissions Notes	1974 and earlier vehicles WITHOUT A.I.R.; Does not require EO if existing emission controls are not removed.

1973

350

Vehicle Specific Information
Air Conditioning	Not for '67-69 with A/C! 1970 and later with Large Piston A/C need bracket 20110
Power Steering	Yes
Auto Transmission - Column	Yes
Auto Transmission - Floor	Yes
Manual Transmission - Column	No
Manual Transmission - Floor	Yes
Footnotes	(1) Without smog injection or injection heads. (100) Will not fit steering damper inside front crossmember. (103) Will fit with angle plug heads (Chevy aluminum only, L98). (6) Modification to stock exhaust required to retain catalytic converter.
Emissions Notes	1974 and earlier vehicles WITHOUT A.I.R.; Does not require EO if existing emission controls are not removed.

1974

350

Vehicle Specific Information
Air Conditioning	Not for '67-69 with A/C! 1970 and later with Large Piston A/C need bracket 20110
Power Steering	Yes
Auto Transmission - Column	Yes
Auto Transmission - Floor	Yes
Manual Transmission - Column	No
Manual Transmission - Floor	Yes
Footnotes	(1) Without smog injection or injection heads. (100) Will not fit steering damper inside front crossmember. (103) Will fit with angle plug heads (Chevy aluminum only, L98). (6) Modification to stock exhaust required to retain catalytic converter.
Emissions Notes	1974 and earlier vehicles WITHOUT A.I.R.; Does not require EO if existing emission controls are not removed.

1975

350

Vehicle Specific Information
Air Conditioning	Not for '67-69 with A/C! 1970 and later with Large Piston A/C need bracket 20110
Power Steering	Yes
Auto Transmission - Column	Yes
Auto Transmission - Floor	Yes
Manual Transmission - Column	No
Manual Transmission - Floor	Yes
Footnotes	(1) Without smog injection or injection heads. (100) Will not fit steering damper inside front crossmember. (103) Will fit with angle plug heads (Chevy aluminum only, L98). (6) Modification to stock exhaust required to retain catalytic converter.
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.

1976

350

Vehicle Specific Information
Air Conditioning	Not for '67-69 with A/C! 1970 and later with Large Piston A/C need bracket 20110
Power Steering	Yes
Auto Transmission - Column	Yes
Auto Transmission - Floor	Yes
Manual Transmission - Column	No
Manual Transmission - Floor	Yes
Footnotes	(1) Without smog injection or injection heads. (100) Will not fit steering damper inside front crossmember. (103) Will fit with angle plug heads (Chevy aluminum only, L98). (6) Modification to stock exhaust required to retain catalytic converter.
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.

1977

350

Vehicle Specific Information
Air Conditioning	Not for '67-69 with A/C! 1970 and later with Large Piston A/C need bracket 20110
Power Steering	Yes
Auto Transmission - Column	Yes
Auto Transmission - Floor	Yes
Manual Transmission - Column	No
Manual Transmission - Floor	Yes
Footnotes	(1) Without smog injection or injection heads. (100) Will not fit steering damper inside front crossmember. (103) Will fit with angle plug heads (Chevy aluminum only, L98). (6) Modification to stock exhaust required to retain catalytic converter.
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.

1978

350

Vehicle Specific Information
Air Conditioning	Not for '67-69 with A/C! 1970 and later with Large Piston A/C need bracket 20110
Power Steering	Yes
Auto Transmission - Column	Yes
Auto Transmission - Floor	Yes
Manual Transmission - Column	No
Manual Transmission - Floor	Yes
Footnotes	(1) Without smog injection or injection heads. (100) Will not fit steering damper inside front crossmember. (103) Will fit with angle plug heads (Chevy aluminum only, L98). (6) Modification to stock exhaust required to retain catalytic converter.
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.

1979

350

Vehicle Specific Information
Air Conditioning	Not for '67-69 with A/C! 1970 and later with Large Piston A/C need bracket 20110
Power Steering	Yes
Auto Transmission - Column	Yes
Auto Transmission - Floor	Yes
Manual Transmission - Column	No
Manual Transmission - Floor	Yes
Footnotes	(1) Without smog injection or injection heads. (100) Will not fit steering damper inside front crossmember. (103) Will fit with angle plug heads (Chevy aluminum only, L98). (6) Modification to stock exhaust required to retain catalytic converter.
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.

1979

350

Vehicle Specific Information
Air Conditioning	Not for '67-69 with A/C! 1970 and later with Large Piston A/C need bracket 20110
Power Steering	Yes
Auto Transmission - Column	Yes
Auto Transmission - Floor	Yes
Manual Transmission - Column	No
Manual Transmission - Floor	Yes
Footnotes	(1) Without smog injection or injection heads. (100) Will not fit steering damper inside front crossmember. (103) Will fit with angle plug heads (Chevy aluminum only, L98). (6) Modification to stock exhaust required to retain catalytic converter.
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.

1980

350

Vehicle Specific Information
Air Conditioning	Not for '67-69 with A/C! 1970 and later with Large Piston A/C need bracket 20110
Power Steering	Yes
Auto Transmission - Column	Yes
Auto Transmission - Floor	Yes
Manual Transmission - Column	No
Manual Transmission - Floor	Yes
Footnotes	(1) Without smog injection or injection heads. (100) Will not fit steering damper inside front crossmember. (103) Will fit with angle plug heads (Chevy aluminum only, L98). (6) Modification to stock exhaust required to retain catalytic converter.
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.

1980

305

Vehicle Specific Information
Air Conditioning	Not for '67-69 with A/C! 1970 and later with Large Piston A/C need bracket 20110
Power Steering	Yes
Auto Transmission - Column	Yes
Auto Transmission - Floor	Yes
Manual Transmission - Column	No
Manual Transmission - Floor	Yes
Footnotes	(1) Without smog injection or injection heads. (100) Will not fit steering damper inside front crossmember. (103) Will fit with angle plug heads (Chevy aluminum only, L98). (6) Modification to stock exhaust required to retain catalytic converter.
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.

1981

350

Vehicle Specific Information
Air Conditioning	Not for '67-69 with A/C! 1970 and later with Large Piston A/C need bracket 20110
Power Steering	Yes
Auto Transmission - Column	Yes
Auto Transmission - Floor	Yes
Manual Transmission - Column	No
Manual Transmission - Floor	Yes
Footnotes	(1) Without smog injection or injection heads. (100) Will not fit steering damper inside front crossmember. (103) Will fit with angle plug heads (Chevy aluminum only, L98). (6) Modification to stock exhaust required to retain catalytic converter.
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.

1982

350

Vehicle Specific Information
Air Conditioning	Not for '67-69 with A/C! 1970 and later with Large Piston A/C need bracket 20110
Power Steering	Yes
Auto Transmission - Column	Yes
Auto Transmission - Floor	Yes
Manual Transmission - Column	No
Manual Transmission - Floor	Yes
Footnotes	(1) Without smog injection or injection heads. (100) Will not fit steering damper inside front crossmember. (103) Will fit with angle plug heads (Chevy aluminum only, L98). (6) Modification to stock exhaust required to retain catalytic converter.
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.

1982

350

Vehicle Specific Information
Air Conditioning	Not for '67-69 with A/C! 1970 and later with Large Piston A/C need bracket 20110
Power Steering	Yes
Auto Transmission - Column	Yes
Auto Transmission - Floor	Yes
Manual Transmission - Column	No
Manual Transmission - Floor	Yes
Footnotes	(1) Without smog injection or injection heads. (100) Will not fit steering damper inside front crossmember. (103) Will fit with angle plug heads (Chevy aluminum only, L98). (6) Modification to stock exhaust required to retain catalytic converter.
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.