SYTYSOGT STOCK SPECIFICATIONS
This information includes the stock specifications on the GMC Syclone, Typhoon, and Sonoma GT trucks including engine, drivetrain, suspension, and lengths with weights.
ENGINE
SYCLONE & TYPHOON
90° 4.3L V-6 Cast Iron Block & Heads Turbocharged & Intercooled
- RPO: LB4
- Bore & Stroke: 4.00 X 3.48 In., 101.6 X 88.4mm
- Displacment: 262 cu. in., 4300cc, 4.3L
- Compression Ratio: 8.35:1
- Valvetrain: OHV – 2 valves per cylinder, 1.5 rockers, pushrods, hydraulic lifters
- Turbocharger: Mitsubishi TDO-6 – 17c/8cm2 with integral wastegate
- Intercooler: Garrett 13 PSI Water/Air closed system
Rated Horsepower: 285 bhp @ 4400 rpm / Redline 4800RPM
Rated Torque: 350lb-ft @ 3200 rpm
SONOMA GT
90° 4.3L V-6 Cast Iron Block & Heads
- RPO: LB4
- Bore & Stroke: 4.00 X 3.48 In., 101.6 X 88.4mm
- Displacment: 262 cu. in., 4300cc, 4.3L
- Valvetrain: OHV – 2 valves per cylinder, 1.5 rockers, pushrods, hydraulic lifters
Rated Horsepower: 195 bhp @ 4500 rpm
Rated Torque: 135 lb-ft @ 3200 rpm
TRANSMISSION
SYCLONE & TYPHOON
4 Spd Auto 700-R4 w/ Lockup Torque Converter
- TCC Stall Speed: 2100 RPM
- Gear Ratios: 1st 3.06, 2nd 1.63, 3rd 1.00, 4th 0.70
- Final Drive Ratio: 3.42:1 (limited slip rear axle)
- Drivetrain: All Wheel Drive (AWD)
- Transfer Case: Borg Warner BW-4472
- Transfer Gear Ratio: 1.00:1
- Torque Split: 35% front, 65% rear
- Torque Bias: Viscous Coupling
SONOMA GT
4 Spd Auto 4L60
- Drivetrain: Rear Wheel Drive (RWD)
SUSPENSION
SYCLONE & TYPHOON
- Front Sway Bar: 1.26″ Diameter
- Front Suspension: Independent Unequal Length Control Arms, Torsion bars, Anti-Roll Bar
- Rear Suspension: Live Axle, Semi-Elliptic, Single-Stage, Multi-Leaf Springs
- Electronic Air Level Control – Typhoon ONLY
- Steering: Integral Power, Reciculating Ball, Power Assisted
- Turns Lock-to-Lock: 3.1
- Turning Radius: Curb to Curb – 35.4 Ft.
WHEELS & BRAKES
SYCLONE & TYPHOON
- Wheel Size: 16.0″ X 8.0″
- Bolt Pattern: 5″ X 4.75″ (120.65mm)
- Wheel Offsets: Front 41mm / Rear 13mm
- Stud Size: M10.9 12 x 1.50 @ 1-3/4″ long
- Stock Tire: Firestone Firehawk SVX, P245/50VR-16 M+S (no longer in production)
- Front Brakes: 10.5″ X 1.03″ Vented Disk with a minimum rotor thickness of .980″
- Rear Brakes: 9.5″ X 2″ Cast Iron Drums with a maximum drum diameter of 9.560″
- Power Assist: Vacuum, W/4 Wheel Anti-Lock
DIMENSIONS
SYCLONE
- Wheelbase: 108.3 in (2,751 mm)
- Length: 180.5 in (4,585 mm)
- Width: 64.8 in (1,646 mm)
- Height: 60.0 in (1,524 mm)
- Curb Weight: 3550 lbs
TYPHOON
- Wheelbase: 100.5 in (2553 mm)
- Length: 170.3 in (4326 mm)
- Width: 68.2 in (1732 mm)
- Height: 60.0 in (1524 mm)
- Curb Weight: 3822 lb (1734 kg)
SONOMA GT
- Wheelbase: 97 in
- Length: 175 in
- Width: 64.7 in
- Height: 61.3 in
- Curb Weight: 3314 lbs (1503 kg)
