Your cowl drains are probably plugged up, allowing water to collect and run past the seals. Look directly behind the battery and you should see a round rubber hose...pull it towards you, the end of it looks like an udder. It's probably compacted with leaves, grass, sand, etc....clean it out, you may need
gently poke a coathanger or something small in it to dislodge the debris. There's one on the passenger side also, check it too.
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1973 Mille Miglia Red LS5 - SOLD
1981 Dark Claret Metallic - SOLD
1982 White
94 Torch Red LT1
96 Dark Purple Metallic LT4
02 Black Convertible - SOLD
03 Millennium Yellow Z06
09 Atomic Orange Z51