The 5.8 shares it’s architecture with the 4.6/5.4, but the 5.0/5.2 does not. Just because an engine shares certain dimensions to allow compatibility with the existing assembly line and tooling does not mean it’s the “same” as a previous engine.You don't know jack about Ford engines if that is your argument here.
I don't need to look up anything. I know in detail about every V8 engine Ford has made since the 4.6L first debuted. I know specifics about every variant of those engine as well. Why? I like Fords. I like Mustangs, F150s, SHOs- pretty much everything they make.
This is fact- every V8 they have sold in the last 30 years, minus the 6.2L and new 7.3L, is a based on the 4.6L mod motor.
I also know every change they've made along the way to make their "new" engines.
The 5.8L is a direct descendant of the MKVIII engine. That's a fact. It doesn't just look like a mod motor- it IS a mod motor. Still fully constrained by the tiny bores and bore spacing the MKVIII had (spray bore cough cough). However, if you beef up the block for better strength and cooling, work on the heads, add VVT and DI, beef up the rods and pistons, then slap a blower on top (things it takes 30 years to do in OEM land) you can go from a 280 HP N/A engine to 700 HP forced induction engine.
The 5.0 was an all new engine architecture when it debuted in 2011, from the block casting down to the firing order. They share no parts with the 4.6/5.4; it was a clean sheet design. They don’t just “add” features TI-VCT, you act like it’s a bolt on part. Those systems are engineered into the engine design from the beginning.