GM's New LT6 Engine
For you gear heads this new engine is a work of art. 670HP naturally aspirated 5.5 Liter Forged titanium rods Titanium intake valves 12.5:1 compression High flow intake system Cross plane cra...
Forum Discussion
ssthrd wrote:
I used to add 104+ octane booster running 11.5:1 on 104 premium. Cold days were fine, but when the air temps went up the booster came out.
With todays engine management systems, maybe premium fuel will do the job for a 12.5:1 engine.
I would have to get used to the sound of a flat crank. Always loved the sound of a small block at 7K.
head design and FI and electronics have made high compression on 91 octane gas possible. My FI off road motorcycle runs 12.5:1 no problems on 91 octane and 13,000 + rpm.
