My 70 dart thinks she's fat.

Thumperdart that sounds familiar.
Mine is sitting at 11.2:1 static compression
And my dynamic is 8.68, Hopefully I'll be able to run pump gas. I do have as much aluminum as possible & it should be cool under the hood with the coated fenderwell headers
Sounds like a nice car. Have any pics of it? My 440 was right at 10.9 compression.