to anyone running a large cam
#1
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what valve springs are you using with all these huge cams (240 + duration over 600 lift) how long do they last if you street drive them.the ls1-6 heads are limited to valve spring size and i was wondering how you were getting the springs to live with such large cams.
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Originally Posted by juiceman
what valve springs are you using with all these huge cams (240 + duration over 600 lift) how long do they last if you street drive them.the ls1-6 heads are limited to valve spring size and i was wondering how you were getting the springs to live with such large cams.
![Driving](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_driving3.gif)