? about the trucks

depends on the company

 

Maybe they're asking about Heartland. You know, because they posted it in the Heartland forum.

 

well excuse me then. i was in another forum, did not see the heartland part. all i saw was op's header. just trying to be helpful.

 

Lets just assume all big companies turn them down a bit especially ryder trucks. My last job the dd15 were dead as door nail empty. My dads old mack with 350 and a 9 passes all the megas on the hills if that says anything. At least the valve cover says 350 lol bigger injectors and a tuner that plugs into the injection pump.