GMC Syclone Engines by Year

The Syclone was a turbocharged, all-wheel-drive version of the compact GMC Sonoma pickup, built for 1991, with three more trucks for 1992. Its sister, the Typhoon SUV, has its own page.

Pick a year to see every engine offered that model year, with its code, rated horsepower and the trims it came in. Each engine links to its full specs.

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Syclone (1991–1992): 1991 · 1992

Syclone (1991–1992)

The turbocharged 4.3 V6.

1991 Syclone engines

Engine	Rated	Offered in
4.3L / 262 V6 turbo (LB4)	280 hp net	Syclone (AWD pickup), Sole engine

1992 Syclone engines

Engine	Rated	Offered in
4.3L / 262 V6 turbo (LB4)	280 hp net	Syclone, Sole engine

Working on one of these engines?

• Engine displacement from bore and stroke
• Static and dynamic compression ratio
• Which camshaft for your build
• What size carburetor
• Horsepower to torque at any RPM
• Torque converter stall speed

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