Hedman Performance Group

Street Rod Universal Shorty Chev. 283-400 Angle Plug Heads

Photo of Street Rod Universal Shorty Chev. 283-400 Angle Plug Heads

Photo of Hedman's HTC Polished SIlver Ceramic Finish

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

Silver 1-5/8 in. Block Hugger Headers For SB Chevy w/Angle-Plugs

BLOCK HUGGER Headers; Chevy SB 283-400; 1-5/8 in. Tubes; HTC Ceramic Coated

Part#68406

$757.67

Find Local Dealer

Product Specifications

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

Tube Diameter 1-5/8 in.
Tube Style Block Huggers
Automatic Transmission - Column Yes
Automatic Transmission - Floor Yes
Manual Transmission - Column Yes
Manual Transmission - Floor Yes
Collector Attachment 2-1/2 in.
Collector Diameter 2-1/2 in.
Collector Size 2-1/2 in.
Collector Style 3-Bolt Gasket Style Flange
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.
Engine Chevy SB 283-400
Finish HTC Polished Silver Ceramic-Metallic
Finish Type HTC SILVER (polished) Ceramic-metallic Coating
Flange Style Standard
Flange Thickness 0.375 in.
Header Port Shape Oval Port
Header Style Block Huggers- Street Rod
Notes Street Rod Universal Shorty Chev. 283-400 Angle Plug Heads
Port Shape Oval
Material Mild Steel
Transmission Notes Modification to shifter linkage may be required.
Tube Design Standard
Tube Length Short Tubes
Tube Material Thickness 16g
Tube Size 1-5/8 in.
Variations 68400
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 16g
Primary Tube Diameter (in) 1.625 in.
Package Contents Headers, reducers (exhaust adapters), gaskets, mounting hardware
Header Material Mild Steel
Header Finish HTC Polished Silver Ceramic-Metallic
Cylinder Head Port Shape Oval
Cylinder Head Stock Profile Heads
Header Construction MILD STEEL- Standard-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

STREET ROD

Street Rod

Year

C.I.D.

Liter

Block Type

Cylinders

Fuel Type

Drive Type

1923

305

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1923

283

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1923

350

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1923

327

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1924

283

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1924

350

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1924

327

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1924

305

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1925

350

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1925

327

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1925

305

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1925

283

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1926

327

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1926

305

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1926

283

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1926

350

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1927

305

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1927

283

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1927

350

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1927

327

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1928

283

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1928

350

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1928

327

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1928

305

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1929

350

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1929

327

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1929

305

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1929

283

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1930

327

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1930

305

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1930

283

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1930

350

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1931

283

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1931

350

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1931

327

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1931

305

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1932

305

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1932

283

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1932

350

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1932

327

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1934

350

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1934

327

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1934

305

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1934

283

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1935

327

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1935

305

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1935

283

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1935

350

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1936

283

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1936

305

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1936

327

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1936

350

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1937

283

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1937

305

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1937

327

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1937

350

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1938

350

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1938

283

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1938

305

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1938

327

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1939

305

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1939

327

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1939

350

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1939

283

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1940

283

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1940

305

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1940

327

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1940

350

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1941

283

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1941

305

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1941

327

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1941

350

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1942

305

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1942

350

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1942

283

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1942

327

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1943

283

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1943

305

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1943

327

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1943

350

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1944

283

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1944

305

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1944

327

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1944

350

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1945

350

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1945

283

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1945

305

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1945

327

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1946

327

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1946

350

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1946

283

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1946

305

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1947

283

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1947

305

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1947

327

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1947

350

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1948

283

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1948

305

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1948

327

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1948

350

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1949

350

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1949

283

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1949

305

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)

1949

327

Vehicle Specific Information
Footnotes	(103) Will fit with angle plug heads (Chevy aluminum only, L98).
Emissions Notes	RACE ONLY! NOT LEGAL for public street or highway use on '75-later vehicles.
Engine Family	SB Chevy 283-400 (Gen 1)