I shift my 414/340 block at 6800, ran it through at 7200 plenty of times.

Used to turn my old 340 W2 motor/4 speed car 7600-7800 Routinely back in the early 80's, Heavy TRW Pop ups and all smoke


WIZE

World's Quickest Diahatsu Rocky (??) 414" Stroker Small block Mopar Powered. 10.84 @ 123...and gettin' quicker!

https://www.youtube.com/watch?v=-mWzLma3YGI

In Car:

https://www.youtube.com/watch?v=PjXcf95e6v0