# SBC valve spring change HELP!

**URL:** <https://forums.speedlife.net/t/sbc-valve-spring-change-help/35721>\
**Category:** NYSpeed Automotive\
**Created:** [September 20, 2007, 8:22pm UTC](https://forums.speedlife.net/t/sbc-valve-spring-change-help/35721 "2007-09-20T20:22:53Z")\
**Posts on this page:** 1\
**Showing post:** 17

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**Author:** ![Pauly](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pauly/32/7493_2.png) [@Pauly](https://forums.speedlife.net/u/Pauly)\
**Post date:** [September 21, 2007, 11:23am UTC](https://forums.speedlife.net/t/sbc-valve-spring-change-help/35721/17 "2007-09-21T11:23:23Z")

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EPA required it. i saw an article in regards to it, cant find exact but this also describes it  
[http://www.isettaclassics.com/news/news\_moreinfo.php?id=37](http://www.isettaclassics.com/news/news_moreinfo.php?id=37)  
rotella is now CJ-4  
[http://www.wellworthproducts.com/tech-articles/19.html](http://www.wellworthproducts.com/tech-articles/19.html)

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