The little 318 & Racer Brown's quality products

273 said
Don't worry about flipping the pistons, stock pistons had an offset and people use to install them other way around thinking it might pick up power, Engine Masters Show debunked it.

Doesn't take much to make the stock shortblock into a strong performer, 4bbl cam (regrind) headers and. Heads since you don't have any Speed Master with the right rockers to work with magnums (push rod oiling). Should get you into the 400's hp depending on cam.

I am NOT believing one mediocre dyno test, that is not how research works. Even if it doesn't work, there is ZERO reason not to do it. Even if it doesn't make any gains, it's not hurting anything to have them flipped. If it does make gains then you got free power. 3 guys on a dyno with 1 engine do not trump what Chrysler engineers said. That's just my 2 cents