Considering the Arrow attained 1.9ish on the J75 engines, with the iroquois installed it easily should have supercruised.
The J75 had a dry thrust of 5,700 kilograms (12,500 pounds), and an afterburning thrust of 8,400 kilograms (18,500 pounds). The Iroquois was the most powerful engine in North America, with a dry thrust of 8,400 kilograms (18,500 pounds) and an afterburning thrust of 11,800 kilograms (26,000 pounds). It had an unprecedented 5:1 thrust to weight ratio, achieved partly to the extensive use of titanium.
Allegedly they found an iroquois engine in storage in the UK a precursor to the olympus perhaps???
Last edited by rigpiggy; 8th August 2007 at 04:04.