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is a big block out of the question?????



A big block would affect the CG, roll centers, roll axis, F/R percentages, and crossweights too much. A 400 weighs about 80 pounds more than a 360. If it didn't, a 400 would be perfect.

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is a 48 degree block legal, since it deviated from a stock production application?




The rules don't specify that the block has to have been a production part. They just say they have to be iron. There are plenty of Bowtie, World, and SVO blocks out there. I've seen a few R3s, but sadly, they were the only few Mopars in a sea of Chevy garbage with some Fords sprinkled in. I have no idea if they were 48 degree blocks, but if I was spending the coin, I wouldn't choose anything else.