Looking for a mid-length SBC header that fits a wide range of classic GM platforms? Speed Engineering's 1-5/8" universal SBC mid-length headers are a direct-fit upgrade across F-body, A-body, X-body, G-body, and B-body applications — mandrel bent, TIG-welded, and CNC-machined with oval ports, a 3" collector with merge spike, and zinc header bolts included. Built from 304 natural stainless steel with standard graphite manifold gaskets included. Dyno proven.
⚠️ Important: These headers will NOT work on LT1 engines. SBC 305 and 350 V8 engines only.
Features:
- 1-5/8" Primary Tubes — Sized for strong low-to-mid RPM performance on SBC 305 and 350 applications
- 1-3/4" x 1-1/2" Oval Ports — Matches standard SBC oval port cylinder head configurations
- 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 throughout; no crimping, no restriction
- CNC Machined Flanges — Precision fit at the cylinder head for a leak-free seal
- 17-3/8" Center to Center Outer Bolt Holes — Standard SBC bolt spacing for direct fitment verification
- 304 Natural Stainless Steel Construction — Corrosion resistant, heat tolerant, and built to last
- Standard Graphite Manifold Gaskets Included
- 10x1.5x25 Zinc Header Bolts Included
- Compatible with SBC 5.0L/305 and 5.7L/350 V8 Engines
- V8 Engines Only
Vehicle Applications:
Note: Universal fitment. Will NOT work on LT1 engines.
GM F-Body (RWD)
Chevrolet Camaro
- 1970 Chevrolet Camaro (RWD) — SBC 305/350
- 1971 Chevrolet Camaro (RWD) — SBC 305/350
- 1972 Chevrolet Camaro (RWD) — SBC 305/350
- 1973 Chevrolet Camaro (RWD) — SBC 305/350
- 1974 Chevrolet Camaro (RWD) — SBC 305/350
- 1975 Chevrolet Camaro (RWD) — SBC 305/350
- 1976 Chevrolet Camaro (RWD) — SBC 305/350
- 1977 Chevrolet Camaro (RWD) — SBC 305/350
- 1978 Chevrolet Camaro (RWD) — SBC 305/350
- 1979 Chevrolet Camaro (RWD) — SBC 305/350
- 1980 Chevrolet Camaro (RWD) — SBC 305/350
- 1981 Chevrolet Camaro (RWD) — SBC 305/350
Pontiac Firebird & Trans Am
- 1970 Pontiac Firebird/Trans Am (RWD) — SBC 305/350
- 1971 Pontiac Firebird/Trans Am (RWD) — SBC 305/350
- 1972 Pontiac Firebird/Trans Am (RWD) — SBC 305/350
- 1973 Pontiac Firebird/Trans Am (RWD) — SBC 305/350
- 1974 Pontiac Firebird/Trans Am (RWD) — SBC 305/350
- 1975 Pontiac Firebird/Trans Am (RWD) — SBC 305/350
- 1976 Pontiac Firebird/Trans Am (RWD) — SBC 305/350
- 1977 Pontiac Firebird/Trans Am (RWD) — SBC 305/350
- 1978 Pontiac Firebird/Trans Am (RWD) — SBC 305/350
- 1979 Pontiac Firebird/Trans Am (RWD) — SBC 305/350
- 1980 Pontiac Firebird/Trans Am (RWD) — SBC 305/350
- 1981 Pontiac Firebird/Trans Am (RWD) — SBC 305/350
GM A-Body (RWD)
Chevrolet Chevelle & El Camino
- 1968 Chevrolet Chevelle/El Camino (RWD) — SBC 305/350
- 1969 Chevrolet Chevelle/El Camino (RWD) — SBC 305/350
- 1970 Chevrolet Chevelle/El Camino (RWD) — SBC 305/350
- 1971 Chevrolet Chevelle/El Camino (RWD) — SBC 305/350
- 1972 Chevrolet Chevelle/El Camino (RWD) — SBC 305/350
- 1973 Chevrolet Chevelle/El Camino (RWD) — SBC 305/350
- 1974 Chevrolet Chevelle/El Camino (RWD) — SBC 305/350
- 1975 Chevrolet Chevelle/El Camino (RWD) — SBC 305/350
- 1976 Chevrolet Chevelle/El Camino (RWD) — SBC 305/350
- 1977 Chevrolet Chevelle/El Camino (RWD) — SBC 305/350
GM X-Body (RWD)
Chevrolet Nova
- 1975 Chevrolet Nova (RWD) — SBC 305/350
- 1976 Chevrolet Nova (RWD) — SBC 305/350
- 1977 Chevrolet Nova (RWD) — SBC 305/350
- 1978 Chevrolet Nova (RWD) — SBC 305/350
- 1979 Chevrolet Nova (RWD) — SBC 305/350
GM G-Body (RWD)
Chevrolet Monte Carlo & El Camino
- 1982 Chevrolet Monte Carlo (RWD) — SBC 305/350
- 1983 Chevrolet Monte Carlo (RWD) — SBC 305/350
- 1984 Chevrolet Monte Carlo (RWD) — SBC 305/350
- 1985 Chevrolet Monte Carlo (RWD) — SBC 305/350
- 1986 Chevrolet Monte Carlo (RWD) — SBC 305/350
- 1987 Chevrolet Monte Carlo (RWD) — SBC 305/350
- 1982 Chevrolet El Camino (RWD) — SBC 305/350
- 1983 Chevrolet El Camino (RWD) — SBC 305/350
- 1984 Chevrolet El Camino (RWD) — SBC 305/350
- 1985 Chevrolet El Camino (RWD) — SBC 305/350
- 1986 Chevrolet El Camino (RWD) — SBC 305/350
- 1987 Chevrolet El Camino (RWD) — SBC 305/350
Buick Regal & Grand National
- 1982 Buick Regal/Grand National (RWD) — SBC 305/350
- 1983 Buick Regal/Grand National (RWD) — SBC 305/350
- 1984 Buick Regal/Grand National (RWD) — SBC 305/350
- 1985 Buick Regal/Grand National (RWD) — SBC 305/350
- 1986 Buick Regal/Grand National (RWD) — SBC 305/350
- 1987 Buick Regal/Grand National (RWD) — SBC 305/350
Oldsmobile Cutlass
- 1982 Oldsmobile Cutlass (RWD) — SBC 305/350
- 1983 Oldsmobile Cutlass (RWD) — SBC 305/350
- 1984 Oldsmobile Cutlass (RWD) — SBC 305/350
- 1985 Oldsmobile Cutlass (RWD) — SBC 305/350
- 1986 Oldsmobile Cutlass (RWD) — SBC 305/350
- 1987 Oldsmobile Cutlass (RWD) — SBC 305/350
Pontiac Grand Prix
- 1982 Pontiac Grand Prix (RWD) — SBC 305/350
- 1983 Pontiac Grand Prix (RWD) — SBC 305/350
- 1984 Pontiac Grand Prix (RWD) — SBC 305/350
- 1985 Pontiac Grand Prix (RWD) — SBC 305/350
- 1986 Pontiac Grand Prix (RWD) — SBC 305/350
- 1987 Pontiac Grand Prix (RWD) — SBC 305/350
GM B-Body (RWD)
Chevrolet Caprice & Impala
- 1971 Chevrolet Caprice/Impala (RWD) — SBC 305/350
- 1972 Chevrolet Caprice/Impala (RWD) — SBC 305/350
- 1973 Chevrolet Caprice/Impala (RWD) — SBC 305/350
- 1974 Chevrolet Caprice/Impala (RWD) — SBC 305/350
- 1975 Chevrolet Caprice/Impala (RWD) — SBC 305/350
- 1976 Chevrolet Caprice/Impala (RWD) — SBC 305/350
- 1977 Chevrolet Caprice/Impala (RWD) — SBC 305/350
- 1978 Chevrolet Caprice/Impala (RWD) — SBC 305/350
- 1979 Chevrolet Caprice/Impala (RWD) — SBC 305/350
- 1980 Chevrolet Caprice/Impala (RWD) — SBC 305/350
- 1981 Chevrolet Caprice/Impala (RWD) — SBC 305/350
- 1982 Chevrolet Caprice/Impala (RWD) — SBC 305/350
- 1983 Chevrolet Caprice/Impala (RWD) — SBC 305/350
- 1984 Chevrolet Caprice/Impala (RWD) — SBC 305/350
- 1985 Chevrolet Caprice/Impala (RWD) — SBC 305/350
- 1986 Chevrolet Caprice/Impala (RWD) — SBC 305/350
- 1987 Chevrolet Caprice/Impala (RWD) — SBC 305/350
- 1988 Chevrolet Caprice/Impala (RWD) — SBC 305/350
- 1989 Chevrolet Caprice/Impala (RWD) — SBC 305/350
- 1990 Chevrolet Caprice/Impala (RWD) — SBC 305/350
- 1991 Chevrolet Caprice/Impala (RWD) — SBC 305/350
- 1992 Chevrolet Caprice/Impala (RWD) — SBC 305/350
- 1993 Chevrolet Caprice/Impala (RWD) — SBC 305/350
FAQ
Will these headers work on an LT1 engine?
No. These headers are designed for small block Chevy 305 and 350 V8 engines only and will not work on LT1 engines.
What is the difference between mid-length headers and shorty headers for SBC applications?
Mid-length headers offer a balance between the compact fitment of a shorty and the peak performance of a longtube. They deliver improved flow and power over shorty headers while offering a more compact design than a full longtube that may be easier to fit in certain chassis configurations.
What port shape do these headers use?
These headers use 1-3/4" x 1-1/2" oval ports, compatible with standard SBC oval port cylinder head configurations.
What is the bolt hole spacing on these headers?
The outer bolt holes are 17-3/8" center to center, matching standard SBC head bolt spacing.
What bolts are included?
10x1.5x25 zinc header bolts are included with the headers.
What collector size do these headers use?
These headers feature a 3" collector with merge spike.
What material are these headers made from?
304 natural stainless steel with full TIG-welded construction, CNC-machined flanges, and a merge spike.
Are gaskets included?
Yes. Standard graphite manifold gaskets are included with the headers.
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).