Quote:

Comp Cam XR286R.
I am a member of several race boards and it's only the Mopar board that still recommends flat tappet cams. Yes, rollers cost more but they work and there is never any lobe failure.



There is really only one problem running them on the
street like he wants to do... they dont like to idle
down low.. its the lack of oil on the rollers... it
can be corrected with the edm hole in the lifter to
feed the rollers... I went that way on my 416 for
the street... mine is a MP roller basically for a
roundy round engine... its 260/270 .640/.640 on a
105 lsa installed at 105 because I didnt want to
increase the torque any higher with a 5000 stall conv..
this ended up in the 580-590 hp range with ported
W-2s and 850 carb... one other thing.. I had to use
a high volume oil pump with the lifters.. they have a
larger hole in them than I had heard... its like .022