Search results

  1. jbfrench

    Comp Cams L31 Tuning

    Hi everybody, I'm new to all of this. I bought my first GMT400 last year and have been working on it off and on over the course of the year. I put a Comp Cams XR258HR cam in along with new pushrods, lifters, and springs. The stock tune isn't liking the new cam. Can anyone recommend any tuning...
Top