Upgrading the exhaust on your A-body or B-body with a big block Chevy? Speed Engineering's 1-3/4" BBC mid-length headers are a direct-fit, dyno-proven upgrade built from 304 natural stainless steel with mandrel-bent primary tubes, CNC-machined flanges, merge spikes, and full TIG-welded construction. Compatible with BBC 396, 402, and 454 V8 engines across a wide range of classic GM A-body and B-body platforms. Zinc header bolts are included.
⚠️ Important: These headers will NOT work on SBC or LT1 engines. BBC 396/402/454 engines only.
Features:
- 1-3/4" Round Port Primary Tubes — Full-diameter flow from cylinder head to collector for maximum exhaust scavenging
- 3" Collector with Merge Spike — Optimized merge geometry for strong low-to-mid RPM torque
- Mid-Length Header Design — A balance between shorty and longtube for improved flow and street-friendly fitment
- Mandrel Bent Tubing — Consistent tube diameter through every bend; no crimping, no restriction
- CNC Machined Flanges — Precision fit at the head and collector for a leak-free seal
- 17-7/8" Center to Center Outer Bolt Holes — Standard BBC bolt spacing for direct fitment verification
- 304 Natural Stainless Steel Construction — Corrosion resistant, heat tolerant, and built to last
- Standard Graphite Manifold Gaskets Included
- 3/8"-16x1" Zinc Header Bolts Included
- Compatible with BBC 396, 402, and 454 V8 Engines
- V8 Engines Only
Vehicle Applications:
Chevrolet Chevelle — A-Body (RWD)
- 1968 Chevrolet Chevelle (RWD) — BBC 396/402/454
- 1969 Chevrolet Chevelle (RWD) — BBC 396/402/454
- 1970 Chevrolet Chevelle (RWD) — BBC 396/402/454
- 1971 Chevrolet Chevelle (RWD) — BBC 396/402/454
- 1972 Chevrolet Chevelle (RWD) — BBC 396/402/454
- 1973 Chevrolet Chevelle (RWD) — BBC 396/402/454
- 1974 Chevrolet Chevelle (RWD) — BBC 396/402/454
- 1975 Chevrolet Chevelle (RWD) — BBC 396/402/454
- 1976 Chevrolet Chevelle (RWD) — BBC 396/402/454
- 1977 Chevrolet Chevelle (RWD) — BBC 396/402/454
Chevrolet El Camino — A-Body (RWD)
- 1968 Chevrolet El Camino (RWD) — BBC 396/402/454
- 1969 Chevrolet El Camino (RWD) — BBC 396/402/454
- 1970 Chevrolet El Camino (RWD) — BBC 396/402/454
- 1971 Chevrolet El Camino (RWD) — BBC 396/402/454
- 1972 Chevrolet El Camino (RWD) — BBC 396/402/454
- 1973 Chevrolet El Camino (RWD) — BBC 396/402/454
- 1974 Chevrolet El Camino (RWD) — BBC 396/402/454
- 1975 Chevrolet El Camino (RWD) — BBC 396/402/454
- 1976 Chevrolet El Camino (RWD) — BBC 396/402/454
- 1977 Chevrolet El Camino (RWD) — BBC 396/402/454
Pontiac GTO — A-Body (RWD)
- 1968 Pontiac GTO (RWD) — BBC 396/402/454
- 1969 Pontiac GTO (RWD) — BBC 396/402/454
- 1970 Pontiac GTO (RWD) — BBC 396/402/454
- 1971 Pontiac GTO (RWD) — BBC 396/402/454
- 1972 Pontiac GTO (RWD) — BBC 396/402/454
- 1973 Pontiac GTO (RWD) — BBC 396/402/454
Oldsmobile Cutlass — A-Body (RWD)
- 1968 Oldsmobile Cutlass (RWD) — BBC 396/402/454
- 1969 Oldsmobile Cutlass (RWD) — BBC 396/402/454
- 1970 Oldsmobile Cutlass (RWD) — BBC 396/402/454
- 1971 Oldsmobile Cutlass (RWD) — BBC 396/402/454
- 1972 Oldsmobile Cutlass (RWD) — BBC 396/402/454
- 1973 Oldsmobile Cutlass (RWD) — BBC 396/402/454
- 1974 Oldsmobile Cutlass (RWD) — BBC 396/402/454
- 1975 Oldsmobile Cutlass (RWD) — BBC 396/402/454
- 1976 Oldsmobile Cutlass (RWD) — BBC 396/402/454
- 1977 Oldsmobile Cutlass (RWD) — BBC 396/402/454
Buick Skylark — A-Body (RWD)
- 1968 Buick Skylark (RWD) — BBC 396/402/454
- 1969 Buick Skylark (RWD) — BBC 396/402/454
- 1970 Buick Skylark (RWD) — BBC 396/402/454
- 1971 Buick Skylark (RWD) — BBC 396/402/454
- 1972 Buick Skylark (RWD) — BBC 396/402/454
- 1973 Buick Skylark (RWD) — BBC 396/402/454
- 1974 Buick Skylark (RWD) — BBC 396/402/454
- 1975 Buick Skylark (RWD) — BBC 396/402/454
- 1976 Buick Skylark (RWD) — BBC 396/402/454
- 1977 Buick Skylark (RWD) — BBC 396/402/454
Chevrolet Impala — B-Body (RWD)
- 1965 Chevrolet Impala (RWD) — BBC 396/402/454
- 1966 Chevrolet Impala (RWD) — BBC 396/402/454
- 1967 Chevrolet Impala (RWD) — BBC 396/402/454
- 1968 Chevrolet Impala (RWD) — BBC 396/402/454
- 1969 Chevrolet Impala (RWD) — BBC 396/402/454
- 1970 Chevrolet Impala (RWD) — BBC 396/402/454
- 1971 Chevrolet Impala (RWD) — BBC 396/402/454
- 1972 Chevrolet Impala (RWD) — BBC 396/402/454
- 1973 Chevrolet Impala (RWD) — BBC 396/402/454
- 1974 Chevrolet Impala (RWD) — BBC 396/402/454
- 1975 Chevrolet Impala (RWD) — BBC 396/402/454
- 1976 Chevrolet Impala (RWD) — BBC 396/402/454
Chevrolet Bel Air — B-Body (RWD)
- 1965 Chevrolet Bel Air (RWD) — BBC 396/402/454
- 1966 Chevrolet Bel Air (RWD) — BBC 396/402/454
- 1967 Chevrolet Bel Air (RWD) — BBC 396/402/454
- 1968 Chevrolet Bel Air (RWD) — BBC 396/402/454
- 1969 Chevrolet Bel Air (RWD) — BBC 396/402/454
- 1970 Chevrolet Bel Air (RWD) — BBC 396/402/454
- 1971 Chevrolet Bel Air (RWD) — BBC 396/402/454
- 1972 Chevrolet Bel Air (RWD) — BBC 396/402/454
- 1973 Chevrolet Bel Air (RWD) — BBC 396/402/454
- 1974 Chevrolet Bel Air (RWD) — BBC 396/402/454
- 1975 Chevrolet Bel Air (RWD) — BBC 396/402/454
- 1976 Chevrolet Bel Air (RWD) — BBC 396/402/454
Chevrolet Biscayne — B-Body (RWD)
- 1965 Chevrolet Biscayne (RWD) — BBC 396/402/454
- 1966 Chevrolet Biscayne (RWD) — BBC 396/402/454
- 1967 Chevrolet Biscayne (RWD) — BBC 396/402/454
- 1968 Chevrolet Biscayne (RWD) — BBC 396/402/454
- 1969 Chevrolet Biscayne (RWD) — BBC 396/402/454
- 1970 Chevrolet Biscayne (RWD) — BBC 396/402/454
- 1971 Chevrolet Biscayne (RWD) — BBC 396/402/454
- 1972 Chevrolet Biscayne (RWD) — BBC 396/402/454
- 1973 Chevrolet Biscayne (RWD) — BBC 396/402/454
- 1974 Chevrolet Biscayne (RWD) — BBC 396/402/454
- 1975 Chevrolet Biscayne (RWD) — BBC 396/402/454
- 1976 Chevrolet Biscayne (RWD) — BBC 396/402/454
Chevrolet Caprice — B-Body (RWD)
- 1966 Chevrolet Caprice (RWD) — BBC 396/402/454
- 1967 Chevrolet Caprice (RWD) — BBC 396/402/454
- 1968 Chevrolet Caprice (RWD) — BBC 396/402/454
- 1969 Chevrolet Caprice (RWD) — BBC 396/402/454
- 1970 Chevrolet Caprice (RWD) — BBC 396/402/454
- 1971 Chevrolet Caprice (RWD) — BBC 396/402/454
- 1972 Chevrolet Caprice (RWD) — BBC 396/402/454
- 1973 Chevrolet Caprice (RWD) — BBC 396/402/454
- 1974 Chevrolet Caprice (RWD) — BBC 396/402/454
- 1975 Chevrolet Caprice (RWD) — BBC 396/402/454
- 1976 Chevrolet Caprice (RWD) — BBC 396/402/454
Frequently Asked Questions:
Q: Will these headers work on a small block Chevy or LT1 engine? No. These headers are designed for Big Block Chevy 396, 402, and 454 V8 engines only. They will not work on SBC or LT1 engines.
Q: What is the bolt hole spacing on these headers? The outer bolt holes are 17-7/8" center to center, matching standard BBC head bolt spacing.
Q: What bolts are included? 3/8"-16x1" zinc header bolts are included with the headers.
Q: What is the collector size on these headers? These headers feature a 3" collector with merge spike.
Q: What engines are compatible with these headers? These headers are compatible with Big Block Chevy 396, 402, and 454 V8 engines in the listed A-body and B-body applications.
Q: What material are these headers made from? 304 natural stainless steel with full TIG-welded construction, CNC-machined flanges, and a merge spike.
Q: Are gaskets included? Yes. Standard graphite manifold gaskets are included with the headers.
Q: Are these headers street legal? No. These are race-only headers intended for closed-course competition use only. Installation on a street-driven vehicle may violate the Clean Air Act (42 U.S.C. 7522(a)(3)).
⚠️ Race Use Only: This product is manufactured and sold for installation on vehicles used solely for competition. Once installed, the vehicle may not be used, registered, or licensed for use on a public road or highway. Installation on a street-driven vehicle may violate the Clean Air Act 203(a)(3), 42 U.S.C. 7522(a)(3).