Valve Guide Reaming/Valve And Seat Grinding - Chevrolet 5.7L Corvette 2004 Shop Manual

Fig. 202: Measuring The Valve Spring Using J 9666
Courtesy of GENERAL MOTORS CORP.
5. Use the J 9666 in order to measure the valve spring tension.
Replace the LS1 spring if the spring tension is less than 310 N (70 lb) at 45.75 mm (1.80 in).
Replace the LS6 spring if the spring tension is less than 400 N (90 lb) at 45.75 mm (1.80 in).

VALVE GUIDE REAMING/VALVE AND SEAT GRINDING

Valve Guide Reaming