Ford 7.3L GASSER!!

BigToe wrote:

Another example... the new 6.6 GM gas has a 10.8 compression ratio. And no question about how the calibration prevents detonation.

Direct injection, better combustion chamber design, better cooling systems, VVT, and knock sensors/engine tuning. They have a lot of control over combustion chamber pressures and cooling these days.

Lots of engines running those sort of compression ratios on 87.

I doubt the engineer would tell how it is tuned. He would just give a canned response mentioning some of the things I put above.

This 7.3 really does look like a modernized big block. Big canted valves, big exhaust/intake ports, etc.

And if you look at the shot of it sitting on the stand next to Andre, it seems like a pretty small package (considering the displacement and application). The modular motors are huge, super wide with the overhead cams. I'm really digging this engine so far.