Is a 400 the same block as a 440 ????????????????????????????????????

[skip68]

Just wondering if they were the same.

[Charger-Bodie]

No, 400 is a low deck and a 440 is a raised block (RB)

[skip68]

    Thank's

[Ghoste]

Although many parts are interchangeable between the two. 

[375instroke]

Why do you ask?

[Mike DC]

 
The 400 has more in common with the 383 motor than a 440. 

The 400 is basically a 383 longblock with the cylinders bored out a little bit larger.  There's a compression loss and a ton of smog crap on the stock 400, but nothing that won't be swapped out during a basic rebuild.  If you wanna build a hot motor, it's pretty much as usable as a 383/440 Magnum.

 

[375instroke]

Many use the 400 for stroker motors since they have a larger bore than a 440 and can be built with lighter internals due to the lower deck height.  Oh wait.  They're boat anchor smog motors.  Let me take it off your hands for you.

[Chatt69chgr]

Some say that it makes the perfect stroker motor.  Read the article below for more info:

http://www.arengineering.com/articles/articleframe.html