GRD GRD 375 classic cars for sale
The GRD 375 is a purebred single-seater Formula 3 race car from 1975, equipped with a 4-cylinder, 2-litre engine producing 170 hp, paired to a sequential Hewland gearbox. Built by Group Racing Developments, the GRD 375 made its mark in Swedish and European motorsport, and today stands as a noteworthy piece of Formula 3 history.
Search results
Currently, there are no matching listings for your search.
Create search alert
Let yourself be notified as soon as a listing is published that matches your search filters.
Create listing
Do you have a GRD GRD 375 that you want to sell? Then create a listing now.
Create listingGRD GRD 375 listing references from Classic Trader
Below you will find listings related to your search that are no longer available on Classic Trader. Use this information to gain insight into availability, value trends, and current pricing for a "GRD GRD 375" to make a more informed purchasing decision.
1975 | GRD 375
1975 | GRD 375
GRD 375-047K
1973 | GRD 273 Formula 2
1973 | GRD 273 Formula 2
Create search alert
Let yourself be notified as soon as a listing is published that matches your search filters.
Create listing
Do you have a GRD GRD 375 that you want to sell? Then create a listing now.
Create listingHistory of the GRD GRD 375
The GRD 375 emerged in 1975 as part of Group Racing Developments' continued effort to influence the Formula 3 scene. GRD, known for their technical innovation, brought forward the 375 as an evolution of their previous single-seater chassis. Its development targeted both the Swedish and the broader European Formula 3 grids, focusing on competitive engineering within tight FIA regulations. Attention to detail, particularly in chassis construction and mechanical layout, was paramount, responding to the growing demands of professional and privateer racing teams of the era.
Model History of the GRD 375
The GRD 375 represents a specific iteration in GRD's continuous development of Formula 3 cars throughout the early-to-mid 1970s. Predecessor models such as the 373 laid the foundation for the 375, visible in the chassis numbering convention (for example, 373-047 links back to prior models). Each evolution brought refinements to aerodynamics, suspension geometry, and safety features in response to the competitive pressures and regulatory updates of international Formula 3. After its production year, the focus shifted towards further iterations to remain competitive, leading to successors beyond the 375 in GRD's line-up.
Highlights of the GRD 375
The GRD 375 comes with a strong racing pedigree, featuring a 2-litre, 4-cylinder engine with mechanical injection, reaching a notable 170 hp at 6500 rpm. Special features include a quick-release steering wheel—essential for rapid driver changes and safety—a fully braided brake and fluid line system for maximum reliability, and a sequential Hewland gearbox, much sought after for its precise shifting in the heat of competition. These cars were extensively campaigned in Sweden and across Europe, and retained authenticity through available conformity certificates.
Technical Data of the GRD 375
Special Editions and Collectible Models
No information on official limited editions for the GRD 375 has been provided. However, the availability of authenticity and conformity certificates increases the collectibility, particularly for chassis with continuous racing history or notable competition results.
Weak Spots and Common Issues
No manufacturer-specific issues are listed for the GRD 375. As with all period Formula 3 cars, attention should be paid to the expiration of safety-critical components such as the racing tank, harnesses, and seats—these must meet current homologation standards for competitive use.
Engine and Performance, Transmission and Handling
The GRD 375’s 2-litre, 4-cylinder engine produces a robust 170 hp with the support of a mechanical fuel injection system, offering a free-revving and responsive power delivery suitable for the demands of 1970s Formula 3 circuits. Mated to a sequential Hewland gearbox, gear changes are direct and built for endurance racing. The monoposto construction ensures direct feedback, making the car agile in corners and rewarding for experienced drivers keen on exploring its full capability. - GRD 375 (1975, 2-litre engine, 170 hp, sequential Hewland transmission)
Interior, Comfort, Exterior and Design
The GRD 375 follows the austere, driver-focused philosophy typical of 1970s Formula 3—every element is designed for function and safety. The single-seater cockpit features a quick-release steering wheel and essential racing instrumentation. Externally, the car showcases aerodynamic cues rooted in its era, emphasising low drag and maximum downforce. Braided hoses and a visible focus on accessibility for trackside repairs highlight its motorsport intent. Optional equipment included safety tanks and competition harnesses, which, though period-correct, require updating for today’s regulations.
Other Features
Each GRD 375 can be traced back through a unique chassis numbering system, with some numbers referencing earlier models, enhancing the historical record of individual cars. These details, together with recognised certificates of authenticity and conformity, ensure each example’s provenance is clear for both historic racing and collectors.
Summary
The GRD 375 is a true thoroughbred of mid-1970s Formula 3, blending technical sophistication with a proven competitive pedigree. With 170 hp from its 2-litre engine, an agile monoposto chassis, and all the necessary certification for historic motorsport, it appeals to purist drivers and collectors alike seeking a genuine machine to relive the golden age of European single-seater racing.