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400 to 440 Headers

Old 03-17-2011, 12:21 PM
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Default 400 to 440 Headers

I have a 400 engine in my 72 Challenger and was wondering if the headers I have now will fit a 440 engine if I upgrade to that or do I have to buy new headers? What about my 4 barrel carb, will I have to buy another intake manifold for the 440 or just put the one on the 400 onto the 440? please help and thank you
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Old 03-18-2011, 11:31 AM
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headers and carb. will be ok, but your 400 is a "B" block (I think 360?- late 383 and 400) so you'll need an intake for an "RB" (early 383-413-426 wedge-and 440)
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