It by no means will do any harm. It's just kinda the opposite of what is suggested in installing a cam. Complete a full exhaust first. It's kinda like getting a mild cam..and running the stock stall on it. Sure you can do it, but it will run like a pig, and nowhere near it's full potential. Cams need to breath is the bottom line...so why not spend all the money you'd dump into a cam package/swap&dyno, when all that money can complete a full exhaust? If your months out from doing everything than go for it, but most of us can only afford to do a few things at a time/year.
I'm not sure why I'm defending my comments/catching heat for this shit. It's common knowledge/sense to complete a full bolt-on car before doing a cam swap. I'm not disagreeing on the fact that you can do a cam first. Imo, it's just bad advice to give someone who really doesn't know the "suggested" order of which to do so.
slp cai..p&ptb..ls6intake...pacesetter lts..tsp true duals..4000revmax stall..motive3.73s..UMI strut..lcas..ta..
ph rod..bilsteins/springs..poly mm..frost tune.
Tick performance SNS stage 3 234/244 111+3...performance built transmission