I saw these in summit and was wondering if these are stock. They said they were a service replacement for magnum engines, but I don't know if 2nd gen 5.2s came with hydraulic roller camshafts. i thought they came with flat tappets.

If i was doing a HS roller rocker mod, would these be smart? I had a lifter go bad and wear a cam lobe down to nothing once before, andI don't want that to happen again.

Also, would it be worth the trouble? The upside is that i would probably be replacing 75% of the gaskets and seals with this mod, and thats always good. But head removal/installation blows.

Thanks

 

roller lifters come on these stock motors.. roller rocker is an upgrade ..

 

well...lets start by calling it a modification or replacement part. Flat tappet lifters are used with flat tappet cams, as hydraulic roller lifters are used with hr cams. We have a hr cam. Anytime you reduce friction or weight in the valvetrain your helping make power (or at the very least not use it up unnecissarly). I think the $400 for harland sharps for a 5/16th bolt mount is kind of silly when you could spend @300 and get a 3/8 stud convo and harland sharps that are stud mount, with polylocks.

 

You can get the 1.7 HS 5/16 stud mount RR for $339 at southeastrt.com. Super-easy bolt on mod for those of us less "make it fit, damnit!" inclined.