Buick Roadmaster · Engine family

Buick Roadmaster 5.7L V8

The LT1 is the most common engine code the VIN decodes to on the 5.7L V8 configurations below; hybrid variants of the same displacement carry their own code. We decode it on 1,710 VINs across 15 factory builds, and 31 listings are reported active. The configuration price reference is $13,038.

Cylinders: 8
Induction: Naturally aspirated
Fuel: Gasoline
Fitted: 1992–1996

◷ Updated October 30, 2026 ▤ National asking prices, refreshed nightly

$13,038

Configuration price reference

On sale today with the 5.7L 8-cyl

1992–1996

Model years it was fitted

Factory configurations

1,710

Roadmaster VINs decoded with it

The price reference is the median of configuration medians, not the median of all active cars. Each configuration has equal weight. Configurations with at least 3 priced listings are used when available; otherwise the reference uses the configurations with a recorded price. Model years, mileage and condition vary. Open a model-year report below for its asking prices across all engines.

Which Roadmaster years got a 5.7L 8-cyl engine

Every model year this engine was fitted to, newest first. The bar is how much of the family's VIN volume sits in that year — long bars are the years this engine was everywhere.

Year Share of VINs VINs On sale Builds

1996 385 6 3

1995 341 4 3

1994 328 9 3

1993 277 6 3

1992 379 6 3

VIN counts come from our decode of the model's build patterns, not from live listings. A year link opens the full Roadmaster report for that year — every engine of the model, not just this one.

15 factory configurations with this engine

Each one is a distinct build as the VIN decodes it — trim, body, gearbox and equipment. Open a build sheet for its full spec and the VINs recorded on it.

1996

3 builds

1996 Roadmaster Limited 1g4bt52p Sedan 1996 Roadmaster Trim not recorded 1g4bn52p Sedan 1996 Roadmaster Estate Wagon 1g4br82p

1995

3 builds

1995 Roadmaster Estate Wagon 1g4br82p 1995 Roadmaster Limited 1g4bt52p Sedan 1995 Roadmaster Trim not recorded 1g4bn52p Sedan

1994

3 builds

1994 Roadmaster Trim not recorded 1g4bn52p Sedan 1994 Roadmaster Estate Wagon 1g4br82p 1994 Roadmaster Limited 1g4bt52p Sedan

1993

3 builds

1993 Roadmaster Limited 1g4bt537 Sedan 1993 Roadmaster Trim not recorded 1g4bn537 Sedan 1993 Roadmaster Estate Wagon 1g4br837

1992

3 builds

1992 Roadmaster Limited 1g4bt537 Sedan 1992 Roadmaster Estate Wagon 1g4br837 1992 Roadmaster Trim not recorded 1g4bn537 Sedan

Every 1996 Roadmaster build →

The 5.7L 8-cyl Roadmaster: common questions

Which Roadmaster years have the 5.7L 8-cyl?

1992–1996, without a break — 5 model years in our VIN decode, across 15 factory configurations and 1,710 VINs.

What does a 5.7L 8-cyl Roadmaster cost?

$13,038 is a configuration price reference: the median of configuration medians, with each priced configuration weighted equally. It is not a listing-level median or a valuation of an individual car. The year-by-year ladder shows VIN and inventory counts; its links open model-year price reports covering all engines.

What is the engine code, and does it matter?

LT1 — the code the VIN decodes to on the configurations on this page. It matters when you order parts or read a service history: the same displacement badge on another model can be a different code with different outputs.

5.7L 8-cyl Roadmaster on the market

Individual vehicles carrying this engine, each with its own listing-history page. The sample is pinned to fixed VIN buckets, so it does not reshuffle day to day.