That pretty decent. The HiPo 225 /6 in my truck only 202/340 on the squeeze. The awesome thing about all the Chrysler slant's were they used the 440 Hemi crank and 4.125" forged rod's. No one has ever pushed one to the block/rod's/crank's limit.
Here's a nice little read up on the /6.
http://www.225.ca/tech/s6rn04.htm