[FOR SALE] New Big Block 4340 RB 4.15" Stroke Crankshaft, Mopar 2.375" Rod Journals

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PROSTOCKTOM

PROSTOCKTOM

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New RPM brand 4340 RB 4.15" stroke crankshaft for Mopar 2.375" rod journals, 6-bolt flange, 6.760" stock rod length. Pre-Balanced Bobweight: 2550 grams. In a .030" over block this crank will make 493 cubic inches. With .055" over block it makes 499 cubic inches.
According to Kim (Oldkimmer) the RPM brand is of a higher quality than the cranks from 440 Source. I can sell this delivered to your door in the 48-states for $800. This is $104 less than a 440 Source crank delivered would cost. Thanks to the new tax laws I now only accept PayPal Friends and Family, Bank Check, or Personal Check with time allowed for check clearance.

RPM-MOPAR-CRANK.jpg


Thanks for Looking,
Tom
 
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Just for clarification, does this crank only work in an RB block? Are the counter weights too tall to work in a 400 B block to make a 470? Thanks.
 
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JDMopar said:
Just for clarification, does this crank only work in an RB block? Are the counter weights too tall to work in a 400 B block to make a 470? Thanks.
Click to expand...

This is a 440 RB crank with 2.75" diameter mains journals. A "B" crank has 2.625" diameter mains journals. So no the mains and the counter weight diameter would not fit in a B block like it is. However before aftermarket cranks were available lots of racers turned down 440 cranks to go in B blocks.

Also a 4.15" stroke wouldn't make a 470" in a 400 B block. It would make a 498" at .030" over.

You can buy a 4.15" stroke B block crank, as well as, several other stroke options @ 440 Source for $904 delivered to your door.

Tom
 
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Sorry. I’m confused, this fits what block now?

RB block, correct?
 
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