Will the VALVE SPRINGS TO SUIT HOLDEN ECOTEC L36 L67 SUPERCHARGED 3.8L V6 easily rev over 6000? Siya September 15, 2025 04:44 Updated Yes, they will. These valve springs are made from aircraft quality alloy steels to give the best performance. Related articles Which Would You Advise, ‘Stage 2 Comp Cam With Standard Ratio Rockers’ Or ‘Stage 2 Crow Cam With Higher Ratio Rockers’? What is the pre load on the SPG606? Are you guys able to balance this harmonic balancer the same as an ecotec harmonic balancer I'm pretty sure the difference is only 15 grams weight difference. "Where can I find the 3rd pulley in AUTOMATIC BELT TENSIONER ASSEMBLY TO SUIT HOLDEN L67 SUPERCHARGED 3.8L V6 as my factory tensioner has three pulleys? Do I Need To Upgrade The Pushrods With The High Ratio Rockers? Comments 0 comments Please sign in to leave a comment.
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