383 or 440 manifold?

[billpierce]

Is there an easy way to tell the difference between a B and RB intake manifold?

 

[turbine68rt]

Approximately 12" overall width for B vs. 13.5" for RB.

 

[lemondana]

After awhile most Mopar guys can tell the difference by just looking at them.

 

[billpierce]

Thanks!

 

[68_661charger]

Spread your pinky and thumb out as far as you can. If you can touch the front (or back) two bolt holes across from each other its a B intake. If not its an RB.

 

[WileERobby]

Spread your pinky and thumb out as far as you can. If you can touch the front (or back) two bolt holes across from each other its a B intake. If not its an RB.

What if you have small hands ?

 

[RemCharger]

What if you have small hands ? View attachment 1711236

Then your intake is going to look much much larger

 

[WileERobby]

Then your intake is going to look much much larger

Among many other things.