Just a quick research on a car that BOTH 383 and 360 came in. 1971 Chrysler Newport 4 door.
- 383 2bbl auto - weight 4259 - 1/4 mile time 18.1
- 360 2bbl auto - weight 4233 - 1/4 mile time 18.4
Both times seem a little slow to me, but that is the article I found.
