NEED INFO! 383bb PLEASE

The 383's 400's are B blocks or low decks. The 413,426 wedge, 440 are RB blocks but are not Hemis. The stroke is shorter on the B than in the RB's The older hemi's ( not the Newer 5.7's or 6.1's) were also 426's RB from the factory but had Hemisherical combution chambers ( a completely different animal. Though Chrysler, Plymouth and Doge did make a bunch of different Hemi's from the 50's on.