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1998 Astro Specifications
14 1998 Product Information Guide
BRAKES
RWD AWD
Type Hydraulic Power Front Disc/Rear Drum 4-Wheel ABS
Front Size (disc) (in.) 11.86 x 1.04 11.57 x 1.25
Rear Size (drum) (in.) 9.5 x 2.0 9.5 x 2.0
Booster Diaphragm Hydro-Boost Hydro-Boost
Parking Brake Cable to Rear Wheels Cable to Rear Wheels
ENGINES
L35
Type Vortec 4300 V6
Block Material Cast-Iron
Cylinder Head Material Cast-Iron
Bore & Stroke (in./mm) 4.00 x 3.48/101.6 x 88.4
Displacement (cu. in./cc) 262/4300
Compression Ratio 9.2:1
Induction System SFI
Valves/Cylinder 2
Lifters Hydraulic Roller
Cam Drive Chain
Horsepower @ rpm (SAE net) 190 @ 4400
Torque @ rpm (SAE net) 250 @ 2800
Redline (rpm) 5600
Recommended Fuel (min.) 87 Octane
TRANSMISSIONS
Model Availability RWD & AWD
Transmission Type 4-Speed Electronically-Controlled Automatic w/Overdrive & Torque Converter
1st 3.06
2nd 1.63
3rd 1.00
4th 0.70
Reverse 2.29
CHASSIS
RWD AWD
Frame Integral/Unibody; Partial Ladder- Integral/Unibody; Partial Ladder-
Type Frame Incorp. w/Floor Panels Type Frame Incorp. w/Floor Panels
Front Independent w/Coil Springs Independent w/Torsion Bars
Rear Variable-Rate Steel Variable-Rate Steel
Multi-Leaf Springs Multi-Leaf Springs
Shocks, Front/Rear (mm) 32/32 32/32
Anti-Roll Bar, Front (mm) 32* 30
Rear Axle Semi-Floating Semi-Floating
*RWD Astro Cargo Van front anti-roll bar is 28mm.