Without opening up a box of worms,
short answer is "no".
like Supe said.........no
but if you do want to run 6" rods get ready for doing alot of clearancing to block..
There is NO clearancing necessary because of the rod LENGTH, the only adjustment is to the pin height of the piston.
The problem with clearancing is because of people using stupid, cheap, H-Beam rods when all they need is a decent I-Beam rod with cap screws instead of bolts and nuts.
There can also be an issue with ANY 5.7" bolt and nut style rod hitting the #2 and #6 cam lobes with the LARGER (3/8") rod bolts that come in factory 5.7" rods versus the 11/32" bolts that stock 5.565" 400 rods were equipped with.......that is why the stock 400 is generally considered inadequate for hi-po use. It isn't the length, it's the size of the big end and bolts.
Now, for high performance, if you can't see the benefits of a higher pin position, in a smaller, lighter piston with a shorter skirt, with a slightly longer dwell time at TDC and BDC, with a slightly quicker piston speed through the intake/exhaust sweep as a result of the longer rod, you'll never understand it.