Quote:
Originally Posted by NHRA Rules
All cars in competition with any type of water overflow capable of spilling water must have a catch-can to accumulate the excess liquids and not leak onto the track. Minimum catch-can capacity: 1 pint (.47 l). Catch-can must be securely fastened; i.e. bolted, clamped. Overflow may be routed into headers on cars that are supercharged or burn nitromethane or methanol.
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My Nova did not have one originally, but had one retrofitted from when it used to do track duty if that helps.