GMC Syclone

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GMC Syclone
File:1991GMCSyclone.jpg
Overview
Manufacturer GMC (General Motors)
Production 1991
(2,995 produced)
Body and chassis
Layout All Wheel Drive
Related GMC Typhoon
GMC Jimmy/Chevrolet S-10 Blazer
GMC Sonoma/Chevrolet S-10
Oldsmobile Bravada
Powertrain
Engine 4.3 L LB4 turbo V6[1]
Transmission 4-speed 4L60 automatic[1]
Dimensions
Wheelbase 108.3 in (2,751 mm)[1]
Length 180.5 in (4,585 mm)[1]
Width 64.8 in (1,646 mm)[1]
Height 60.0 in (1,524 mm)[1]
Chronology
Successor None

The GMC Syclone is a high-performance version of the GMC Sonoma pickup truck. Produced in 1991 by GMC, the Syclone spawned the similarly powered 1992-1993 GMC Typhoon SUV. Another vehicle, the GMC Sonoma GT, offered less performance but was seen as a companion model.

At the time it was introduced, the Syclone was the quickest stock pickup truck being produced in the world. Auto magazines compared its acceleration favorably to a variety of sports cars including the Corvette and - in a memorable comparison test in Car and Driver magazine - a Ferrari.[2] Featuring a turbocharged 6-cylinder engine, all wheel drive, and 4 wheel anti-lock brakes, the specifications had more in common with a Porsche than most other pickup trucks.

Both the Syclone and Typhoon trucks featured a Mitsubishi TD06-17C 8 cm² turbocharger[1] and Garrett water/air intercooler attached to a 4.3 L LB4 V6 engine with unique pistons, main caps, head gaskets, intake manifolds, fuel system, exhaust manifolds, and a 48mm twin bore throttle body from the 5.7 L GM Small-Block engine. All Syclones and Typhoons had a GM 700R4 4-speed automatic transmission. A Borg Warner all wheel drive transfer case split torque with 35% forward and 65% to the rear wheels.[1] Both trucks featured sport modifications to the standard suspensions. The Syclone was the first production truck to receive a 4-wheel anti-lock braking system. Output was 280 hp (209 kW) and 350 lb·ft (475 N·m).[1] The Syclone, when new, was capable of accelerating from 0-60 mph in 5.3 seconds and could do a quarter-mile run in 14.1 seconds at 93 mph (150 km/h) according to Car & Driver's comparison test.

In 1991 Syclones were available in black only. 1992 models were to be offered in a wider range of colors before they were canceled. 2995 Syclones were built in 1991, and 3 in 1992. 113 (estimated 31 returned) were reported as Export Sales including a subset now referred to as the Saudi Syclones — a small number were delivered to Saudi Arabia and modified with a metric dash cluster, leaded fuel chip, and a resonator in place of the catalytic converter.

The Syclone, Typhoon, and Sonoma GT were built for GMC by Production Automotive Services of Troy, Michigan and sold through dealerships.

The Syclone and Typhoon's gauge cluster is the one used in the Pontiac Sunbird Turbo, which was discontinued in 1990, one year before the Syclone was introduced.

In 2009, a GMC Syclone was scrapped under the Car Allowance Rebate System, despite being highly collectible.[3]

Special Editions

There were two special-edition 1991 Syclones offered by third parties:

Marlboro Syclone

Marlboro Syclone
File:1991GMCMarlboro.jpg
Overview
Production 10 conversions

The special-edition Marlboro Syclone was the grand prize for the ten winners of The Marlboro Racing ‘92 Contest. All ten trucks were provided to American Sunroof Corporation (ASC), by Shinoda Design Associates, Inc., in conjunction with Phillip Morris, Inc. With the help of Larry Shinoda, designer of the Corvette Stingray and Boss Mustang, a transformation of the originally black Syclones took place.[1] Marlboro Syclone custom features include:[1]

  • ASC converted the roof to a targa-style roof panel with mounts in the pick-up bed
  • ASC installed a slide-down rear window assembly
  • Guidon hard tonneau cover
  • Boyd Coddington "Cobra" wheels with Marlboro emblem center caps and Goodyear Eagle GS-C tires
  • PPG "Hot Licks" Red paint, with white strobe stripes provided by Graphik Concepts
  • Recaro leather seats with Simpson 5-Point racing harness
  • Custom Momo "Evolution" steering wheel
  • Sony sound system
  • PROMPaq performance chip and Borla stainless steel exhaust
  • Bell Tech suspension dropped 3 inches

Indy Syclone

Three Indy Syclones were used at the Indianapolis 500 race on May 24, 1992 with the only modifications being a sticker package. One of these Indy trucks was converted into the PPG Syclone Pace Truck (though it was not the official pace car) with significant modifications, including a multi-colored silver, magenta, and aqua paint scheme, and a molded in light bar in the roof, a racing fuel cell and fire system.

External links

References

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GMC, a marque of General Motors, light truck timeline, United States and Canadian market, 1980s–present
Type 1980s 1990s 2000s 2010s
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7
Mid-size crossover Terrain
Acadia
Full-size crossover Acadia
Compact SUV Tracker
Mid-size SUV S-15 Jimmy Jimmy Envoy
Typhoon
Full-size SUV K5 Jimmy Yukon Yukon Yukon Yukon
Suburban Suburban Yukon XL Yukon XL Yukon XL
Coupé utility Caballero
Compact pickup S-15 Sonoma Sonoma
Syclone
Mid-size pickup Canyon Canyon
Full-size pickup C/K Sierra Sierra Sierra Sierra
Van Safari Safari
G-Series Savana Savana
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