Another new V8 ?I am sure the 6.8 will be an evolution of the production and experimental V8. 'S that came before it including the 777 engine.
From what I have been able to piece together, the 777 was a 7 liter V8 based off of the 6.2 SOC boss engine except it looked like a pushrod engine with a single spark plug per cylinder and a much narrower cylinder head than the 6.2!
This might of been an experiment to see if enough power could be produced with a two valve push rod design? (800 hp)
The bore was 107mm and a stroke of 97mm at a deck height of 239mm.
I think the 777 was the basis of Godzilla V8 we have today!
Although the 7 liter could easily make the hp requirement, it fell short for low end torque.
I suspect at this stage ford already was committed on a 101 mm stroke much like the old 428 FE (close) and a bore around 105 mm.
As Mary speculated before, it was much easier to get to 7.3 (445cid) by increasing the bore to 107.2 mm from around 105 and avoiding having to increase the deck height above the 9.65" !
So the 6.8 will probably be a combination of pieces that already exist even if in XE experimental level.
the real question is will the block be aluminum or possibly CGI?
edselfordFri, 05 Mar 2021 00:49:41 +0000
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