The downsized intermediate architecture arrives. Cutlass Supreme notchback coupes share the new 108.1-inch-wheelbase family with other GM intermediates; the 442 is tied to the Salon side of the lineup.
G-Body / Oldsmobile / Cutlass Supreme
1978–1988 REAR-DRIVE CUTLASS
Oldsmobile Cutlass Supreme
The foundation underneath Oldsmobile's G-body performance story: a hugely successful personal-luxury coupe that evolved through multiple series names while carrying Hurst/Olds and 442 hardware.
MODEL GUIDE
The platform beneath the halo cars.
Oldsmobile's G-body-era naming can be confusing because Supreme, Calais, Salon and Brougham identities overlap with body style and option-package history. This guide keeps the broad Cutlass chronology separate from the performance deep dives.
The G-body Hurst/Olds returns on the Cutlass Calais with the Oldsmobile 350 V8, Hurst Dual/Gate and distinctive gold-over-black or gold-over-white treatment.
The 442 shifts to the Calais notchback and takes over much of the prior Hurst/Olds performance formula, including the Olds 350 V8 in the W-30 package.
No Hurst/Olds or 442 production package. The Cutlass remains a major GM seller while the coupe's styling settles into the shape enthusiasts associate with the later H/O and 442.
15th Anniversary Hurst/Olds: black over silver, VIN-9 307 H.O., 200-4R, 3.73 gearing and the signature Lightning Rods shifter.
Hurst/Olds returns in reversed silver-over-black colors with the same core performance formula and the highest official H/O production of the era.
The Hurst/Olds name gives way to the revived 442 W42 package, retaining the high-output Oldsmobile 307 and performance-oriented gearing/trim.
Rear-drive Cutlass Supreme Classic coupes continue briefly as the front-drive W-body Cutlass Supreme takes over the nameplate's future.
IDENTIFICATION
Series names matter.
Supreme
The best-known notchback coupe identity and the core shape most enthusiasts picture when discussing Oldsmobile G-bodies.
Calais / Salon
Performance packages moved across these series during the era. Do not assume a package's host series from body shape alone.
Factory documentation
VIN engine code, option/RPO data, axle and transmission codes, trim tags and original paperwork matter when distinguishing true Hurst/Olds or 442 cars from clones.
RESEARCH STANDARD
Master Customs treats period factory literature and marque-specialist documentation as the baseline and separates factory configuration from enthusiast modification. Oldsmobile used multiple Cutlass series, option packages and drivetrain codes during this era, so verify a specific car by VIN, RPO/build documentation, engine/transmission codes and original literature before ordering restoration or performance parts.