they got ten cylinders, the oem pistons and rods suck for big hp,
the blocks actually move around a bit, the mains are known to walk around under nos, the oiling system is poots, oem valve springs float at high rpm, and the oem push rods flex wildly, and the lifters bleed down way to fast at high rpm and cause the cam profile to actually change. burp
the autos suck under nos, they dotn react quick enough and fry the bands, if you upgrade them to where they can hanlde hp , they hit so dang hard it will make a pregnat woman go into labor.
the manuals are pretty good,but bearings and pads are a little weak
the gear oil dodge puts in them would be better used for a outboard marine motor
oem hp on a stock qc is around 410-420
on an rc 420-430
a cold air makes no hp, do a drop in
best bang for the buck is a sct to flash out the trq tranny limiter
and cut off all the cats
nesxt?