Hooker headers for Mopar 383-440 engines will bolt on the popular aftermarket B-S heads. However, because the exhaust port centerline on these heads is 5/8 in. higher and 3/8 in. out from the engine centerline compared to stock heads, some header modifications will be required for installation. Custom header applications will be required to fit the B-1 heads because of the angled spark plug location. What modifications will I need to make to the headers?
Aug 10, 2008 at 6:47 PM