Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET1994G 20 VAN V6-262 4.3L VIN ZREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER HEAD ASSEMBLYSYSTEM SPECIFICATIONSDIMENSIONS
1994 Chevrolet G 20 Van V6-262 4.3L VIN Z
Dimensions
1994 Chevrolet G 20 Van V6-262 4.3L VIN ZSECTION Dimensions
Engine Liter/CID 4.3L/V6-262
All specifications given in inches.
Cylinder Head Warpage Limit 0.004
Valve Guides
Inside Diameter (Std.) 0.3437
Stem To Guide Clearance
Intake [03] 0.0010-0.0027
Exhaust [04] 0.0010-0.0027
Valve Seats
Seat Angle, Degrees 46
Seat Width
Intake 0.0350-0.0600
Exhaust 0.062-0.093
Runout 0.002
[03] Service limit, 0.0037 inch.
[04] Service limit, 0.0047 inch.
All specifications given in inches.
Cylinder Head Warpage Limit 0.004
Valve Guides
Inside Diameter (Std.) 0.3437
Stem To Guide Clearance
Intake [03] 0.0010-0.0027
Exhaust [04] 0.0010-0.0027
Valve Seats
Seat Angle, Degrees 46
Seat Width
Intake 0.0350-0.0600
Exhaust 0.062-0.093
Runout 0.002
[03] Service limit, 0.0037 inch.
[04] Service limit, 0.0047 inch.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.