Would anyone happen to know how "tall" longtube headers for a 455 are? Just trying to determine how low they would hang on my '64 C10. It is lowered and don't want to purchase them if they'll scrape.

Thanks!
Jeff

 

Ideally they don't go past the oil pan depth but that dimension will vary from one manufacturer to the next. They are not standardized so this question can't be answered properly. Someone can only tell you what their brand does.