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I have a 331 with a 233/242 and 577/577 lift w/ 112lsa. Previous owner had Zex nitrous set up and I was thinking about going turbo with it. Compression is 9.72:1. Tfs 185cnc heads with Holley Systemax I take.
Question 1: Will this cam be ok for 10psi or do I need to change the cam?
Question 2: I have a stock roller cam available. Would that be downgrading? Only ask because I’ve read using stock cam work decent with turbo. Not necessarily with a 331 though.
 

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Stock cam will work well enough to make block splitting power. I run a TFS stage1 cam, only because I didn't have a stock cam available at the time.
 
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