page_title: Ferrari 308 GTB/GTS
section_title: Group B
hierarchical_section_title: Ferrari 308 GTB/GTS / Rally versions / Group B
caption_attribution_description: Une Ferrari 308 GTB Michelotto groupe B de 1984 exposée lors du salon Rétromobile 2017.
context_page_description: The Ferrari 308 GTB berlinetta and targa topped 308 GTS are V8 mid-engined, two-seater sports cars manufactured by the Italian company Ferrari from 1975 to 1985. The 308 replaced the Dino 246 GT and GTS in 1975 and was updated as the 328 GTB/GTS in 1985. The similar 208 GTB and GTS were equipped with a smaller initially naturally aspirated, later turbocharged two-litre engine, and sold mostly in Italy.
context_section_description: Following the introduction of Group B rules in 1982, Michelotto began building 308 GTB rally cars to compete in that class. The first Gr.B 308 was built at the request of Spanish rally driver Antonio Zanini. Four Gr.B specification cars were built, with certain engine and bodywork details differing from the earlier Gr.4 cars. The first Gr.B 308, chassis 18869, was constructed with a 2-valve engine like the Gr.4 cars, while the 3 later cars used a 4-valve-per-cylinder engine and Bosch K-Jetronic fuel injection from the 308 Quattrovalvole. The QV motor produced 310 hp at 8,000 rpm after tuning by Michelotto. The Gr.B cars were also equipped with a "quick-change" gearbox that allowed the final drive ratio to be replaced quickly and easily during racing or testing. Additional modifications included upgraded Brembo brakes, wheels by Canonica, stronger anti-roll bars, rose-joint suspension links, lighter suspension wishbones and a quicker-ratio steering rack.
  As homologation rules required that Gr.B cars use the same body panels as their roadgoing counterparts, the Gr.B 308s were equipped with steel and fiberglass panels. This increased total weight by 66 pounds (30 kg) over the earlier Gr.4 cars. The 308 was homologated under Group B rules three separate times in October 1982, January 1983 and April 1983. This allowed Michelotto to incorporate additional Ferrari-made performance parts into their Gr.B cars, including engine parts, lightweight windows and body panels.
  The Group B specification 308s did not see as much competition use as the more numerous Gr.4 cars. The best World Rally Championship finish of the Gr.B 308 was at the 1982 Rally Monte Carlo, where Jean-Claude Andruet finished second. In 1983, chassis 18869 was driven to first place finishes at several rallies, including the Imperia Rally and the Sicilian Rally Championship. In 1985, Antonio Zanini drove this car to a third place finish at the Targa Florio, followed by several other wins which led to his victory in the Spanish Rally Championship. At the 1984 Rally Della Lana, Luigi "Lucky" Battistolli and Claudio Berro drove chassis 18847 to a second place finish. Also in 1984, the same car was driven to a third place finish at the Rally di Monza by Björn Waldegård and co-driver Billstam Claes.
caption: 308 GTB Gr.B by Michelotto, on display at Rétromobile 2017
exif: {"Image Make": "Canon", "Image Model": "Canon EOS 7D Mark II", "Image Orientation": "Horizontal (normal)", "Image XResolution": "300", "Image YResolution": "300", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "DxO OpticsPro 11.4.2", "Image DateTime": "2017:02:07 21:59:38", "Image Artist": "Thesupermat", "Image Copyright": "CC-BY-SA_4.0", "Image ExifOffset": "270", "GPS GPSVersionID": "[2, 3, 0, 0]", "Image GPSInfo": "10074", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "10186", "Thumbnail JPEGInterchangeFormatLength": "7138", "EXIF ExposureTime": "1/80", "EXIF FNumber": "5", "EXIF ExposureProgram": "Aperture Priority", "EXIF ISOSpeedRatings": "1600", "EXIF SensitivityType": "Recommended Exposure Index", "EXIF RecommendedExposureIndex": "1600", "EXIF ExifVersion": "0230", "EXIF DateTimeOriginal": "2017:02:07 21:59:38", "EXIF DateTimeDigitized": "2017:02:07 21:59:38", "EXIF ComponentsConfiguration": "YCbCr", "EXIF ShutterSpeedValue": "51/8", "EXIF ApertureValue": "37/8", "EXIF ExposureBiasValue": "-1/3", "EXIF SubjectDistance": "162/25", "EXIF MeteringMode": "CenterWeightedAverage", "EXIF Flash": "Flash did not fire, compulsory flash mode", "EXIF FocalLength": "17", "EXIF SubSecTime": "00", "EXIF SubSecTimeOriginal": "00", "EXIF SubSecTimeDigitized": "00", "EXIF FlashPixVersion": "0100", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "5472", "EXIF ExifImageLength": "3648", "Interoperability InteroperabilityIndex": "R98", "Interoperability InteroperabilityVersion": "[48, 49, 48, 48]", "EXIF InteroperabilityOffset": "9944", "EXIF FocalPlaneXResolution": "5472000/899", "EXIF FocalPlaneYResolution": "3648000/599", "EXIF FocalPlaneResolutionUnit": "2", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Auto Exposure", "EXIF WhiteBalance": "Auto", "EXIF SceneCaptureType": "Standard", "EXIF CameraOwnerName": "", "EXIF BodySerialNumber": "043021005136", "EXIF LensSpecification": "[10, 22, 0, 0]", "EXIF LensModel": "EF-S10-22mm f/3.5-4.5 USM", "EXIF LensSerialNumber": "000024095a"}