Engine Question

[Bob.B.]

HI GUYS
IN THE PROCESS OF REPLACING A 44O MAGNUM WITH A DIFFERENT MOTOR OF THE SAME SIZE JUST TO SAVE THE ORIGINAL ENGINE. AND RECENTLY FOUND A SEDAN WITH A 44O RB FAMILY TAG ON IT. JUST CURIOUS IF YOU COULD LET ME KNOW WHAT THE RB FAMILY SPECS ARE. THANX MUCH. [-o<

 

[dgc333]

RB stands for Raised Block. All 413, 426, 440 wedge motors are RB's including your 440 Magnum.

FWIW, The 361, 383 and 400 are B blocks. The difference between B and RB blocks is the distance from the centerline of the crank shaft to the deck surface the heads bolt to with the RB being larger therfore the "Raised" designation.

 

[Mrmopartech]

Bobby B,alot of info can be found on info numbers as casting number,serial production dates,and secondary codes on the stamp pad near the intake.This would help you a great deal to decode what you have and help you in what you need.Now its time to find out what all these numbers are and there meanings,email me at penstarperformance@videotron.ca,Mrmopartech