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Stupid Question I Finally Have To Ask

Started by 7E-Bodies, June 18, 2022, 12:27:53 PM

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7E-Bodies

Please explain the meaning and history behind B/RB engines. I see it all the time and am ashamed to say I'm drawing a blank.  :notsure: :sorry: :-[ :whiteflag:
1970 Challenger R/T Numbers Matching 440 Auto in F8 Quad Green

MoparLeo

The R on the RB block stands for Raised deck. So the taller block allows for a longer stroke/more cubic inches.

https://www.allpar.com/threads/the-rb-engines-383-413-426-440.229900/#post-1085223998
moparleo@hotmail.com  For professionally rebuilt door hinges...