Early 360
There was an article in the mid(?)-'70's called "Hoover's Mover. Tom Hoover (Father of the Hemi.) Put together the original version of a "big bore" 360. Using much machined OEM low compression 340+.020" pistons, He put the budget combo into a notchback Barracuda that ran very well before the aftermarket had performance 360 pistons.
I gotta do some digging to find it and refresh my memory on more of the details.