COMP Cams Camshaft Cv6B 270AH-R14For '92 '14 GM 4. 3L 262 cid 90. V6. Balance shaft Equipped Engines. Performance Cam For Computer Cars. Needs Aftermarket Chip and Exhaust. Strong Mid Range and Top End. Adjustable Valve Train Required. Balance shaft equipped 4. 3L engines were introduced in '92 but GM continued to produce the previous version until '94. Non Balance shaft 4. 3L's ('85 '94) shared their timing cover with the small block Chevy V8 engine. The. Balance shaft 4. 3L's