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Are all 1968 440s RB blocks? #1760414 02/22/15 12:42 PM 02/22/15 12:42 PM
Joined: Feb 2006 Posts: 474 Louisiana D duckblind OP mopar
duckblind OP mopar D Joined: Feb 2006 Posts: 474 Louisiana	I have a simple question, I think. Are all 1968 440s RB blocks or are some B blocks. Thanks.

Re: Are all 1968 440s RB blocks? [Re: duckblind] #1760415 02/22/15 12:43 PM 02/22/15 12:43 PM
Joined: Apr 2007 Posts: 905 SD Z zrxkawboy super stock
zrxkawboy super stock Z Joined: Apr 2007 Posts: 905 SD	All 440s are RBs. It's Swifty! Swifty, you toad sucker!

Re: Are all 1968 440s RB blocks? [Re: zrxkawboy] #1760416 02/22/15 12:56 PM 02/22/15 12:56 PM
Joined: Feb 2006 Posts: 474 Louisiana D duckblind OP mopar
duckblind OP mopar D Joined: Feb 2006 Posts: 474 Louisiana	thanks

Re: Are all 1968 440s RB blocks? [Re: duckblind] #1760417 02/22/15 01:45 PM 02/22/15 01:45 PM
Joined: Jan 2003 Posts: 16,376 D dogdays I Live Here
dogdays I Live Here D Joined: Jan 2003 Posts: 16,376	As are all 413s. The RB means "raised B". The deck was raised from the original B height of 9.980 when they wanted to use a longer stroke. The RB is IIRC 10.725". R. And yes, to those who are chomping at the bit, there were some RB 383s back in the day, but they are so rare as to be not worth talking about, in the same way that the first B engine was a 350.

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