I'm tired of playing games with this hotcam, it just doesn't make the power I want it to so I need to step it up. I'm going with the TSP 220-112 and plan on using the PAC-1218's. These have any breakage problems or anything I should be worried about? Also is there a noticable power difference between the TR220 and the TSP220 (.556 vs .581 lift)? Thanks for any input guys.

http://www.sdparts.com/product/PAC12...veSprings.aspx

 

So far I've only heard of 1 broke PAC 1218, and who's to say why it broke. If I were to run a more agressive cam, I'd use em. Heard of many broken Comp 918's though. Not sure if there's a big power difference between the TR and TSP 220's...yes the TSP has more lift, but the two cams use different lobes which will factor in also. I know for sure that the TR220 has definitely proven itself in 5.3's though.