I went with the 400. It's a 76 2bbl engine originally out of an A or B body car... Not sure of any mods but I know the cam has been replaced about 5 yrs ago when engine was rebuilt and it has an Edelbrock intake with Quadrajet. I does have 6X heads which are probably stock. I'm thinking it's pretty much a stock late 70's 400--nothing high performance. As long as it runs good I'll be happy.
I was able to sell the other 350 I had purchased so I just have the original numbers matching 350 sitting in my driveway under a tarp.
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