Say what?

Detroit never had anything to do with the 5.7, but they did design the 6.2. The 6.2 used the Stanadyne Roosa-Master DB-2 IP. The 5.7 is all GM. GM designed it using accessories from the gasser, and the same bolt patterns, resulting in a similar image. Now, when they turned out to have a lot of problems, they where falsly, and still are to this day, accused of being converted gassers. GM never had a converted gasser. There was an early converted gasser used in pick-ups however, I'll see if anyone knows who built it and who used it. The biggest vehicle the 5.7 was used in was the C10 pick-up.

The 6.2 was designed by Detroit. Had absolutly nothing to do with the 5.7 at all. Was used in vans, Suburbans, Blazers, and all size C/K trucks.