Quote:
Originally Posted by Warrens69GMC
They are still out there. I have a 400 standard bore in my stash.
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I have a 20 over block with a hole in #6 cylinder.. as much as I love the 400s I've had a few issues over the years with them. Surprisingly I've never had one overheat. I'm thinking the Dart Block may solve those problems
https://dartheads.com/shp-blocks/
plus it will take a factory roller cam set-up