I have a Comp Cams XE285HL(.545 net lift advertised) in one of my motors, it fit with no problems. That being said you MUST always check valve to piston clearnances and lobe seperation angle(cam timing) due to different cam lobe designs and the possibilty of the cam locating pin not being in the exact spot it should be in and the timing marks on the cam and cranksahft gears not being marked correctly I have seen a lot of things wrong on car parts, especially when it comes to Hi Po parts The worst offenders on bad piston to valve clearnances are the Mopar brand "Purple Shaft" cams Chrysler(Mopar) has had a lot of different vendors make those cams for them over the years, not all of the cams are the same as the other ones of the same grind They know that and won't do much about it unless you really raise a lot of stink over the bad cam you bought from them