Stuart Boblett Posted March 23, 2021 Report Share Posted March 23, 2021 I need a part number or the PSI for the coolant cap on a 1982 with 305 engine. I have seen caps from 8 to 16 psi listed and am not sure who to believe. Link to comment Share on other sites More sharing options...
IndyJimW Posted March 29, 2021 Report Share Posted March 29, 2021 AC Delco radiator cap for a 1982 305 engine is a RC27 16 lb cap. Good luck, Jim Wood Link to comment Share on other sites More sharing options...
Gunslinger Posted March 29, 2021 Report Share Posted March 29, 2021 If the car has a closed coolant system make sure the cap is for a closed system. Link to comment Share on other sites More sharing options...
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