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Originally Posted by airvolts
I have a backdraft, and I probably had the first one with a big block installed however they where not designed with a big block in mind.
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Nor were the first ACs ... product evolution. Original design was to maximize the small block (far set back of engine, nearly 50/50 balance, etc.) Then you adapt the product circa car #250 or so to accommodate the larger engines. One of the best driving Backdrafts I have seen was a 4.6 Modular setup ... is that a small block
