Thanks for helping out Jolly.
However Detroit still makes some two strokes for the military, like a 6v53TI with 400HP. They may make a few others, not sure, but they do list some on the website. For us normal people the last two stroke was made in 2000.
Grigg

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-