I have had 2 2bbl 1971 383s and 2 1971 4bbls. All had forged cranks. I have heard the 2 bbls had cast cranks, but have never seen a cast crank 383. Kim
It's undoubtedly production date or assembly plant related, but I had one. 1971 Plymouth Sport Fury 2dr htp with the concave back glass, column shift. Great highway beast with 2.76 gears. I put a .430 PurpleShaft in it and a 72 hp 400 intake and Thermoquad on top. Looked 100% stock with those upgrades and ran great, cast crank and all.
