CTS-V's, TB SS, F-bodys, GTO's and 09 Cobra

[SSmokinn_SS]

@LS?WS.6

ms4 along should be a lil over 400, some make 430 cam only on a good tune, with heads…should be making 460 give or take, ur right 420 is wizzzeak

well, look at it this way…

before my nitrous tune, MS3 only I was 412rwhp. Stock heads, stock intake manifold, stock pullys etc.