Any one try this ( Mopar 318 Engine - Cheap As Dirt )

Don't remember the exact issue, but back in 02-04 Hot Rod did a 400 horse 318 using closed chamber 318 heads and the stock 100,000 mile bottom end.

Theres like 5 400hp 318 builds all with different heads
Pretty much all the same besides the heads, 10:1,air gap,
285ish cam, 200 plus cfm heads