Chevrolet Workshop Service and Repair Manuals

Valve: Specifications
Valve Lift Specifications

Engine/VIN     

Year     

Int. 

Exh.

4.3L/V6-262/Z  

1989-90  

.350 

.385

5.0L/V8-305/E  

1989-92  

.350  

.385

5.7L/V8-350/7  

1990     

.385 

.404

5.7L/V8-350/7  

1991     

.413

.428

4.3L/V6-262/Z  

1992     

.350 

.385

5.7L/V8-350/7  

1992     

(1)

(1)

(1)- Except police models, intake .350 inch, exhaust .385 inch. Police models, intake .413 inch, exhaust .428 inch.