Once again, listen to your Uncle Cab.

20 years ago the 451 was the Holy Grail because 400 blocks were nearly free. But it is, in reality, only another way to build a 440. Yes, by using aftermarket parts you can trim the bobweight quite a bit, but you could also do that on any 440. So don't waste your time on a 451.

If you're just going to build a 440, build the 440.

The fun comes in when you get stroke out to 4.250". This engine has become the most popular thing to do with a 400 block. And you get 511 cubic inches, which is 60 cubic inches over the 451. That's with a 4.375 bore, which is becoming the standard size for this motor.

Also, do yourself a favor and use only the big block chevy 2.200" rod journal and 0.990 wristpin sizes. These are pretty much standard for building strokers. The Chrysler s1zes will actually limit your choices.

And sonic check any block before you invest in it. Chrysler casting quality was not so good.

Good Luck!

R.