BillyWalsh Posted September 18, 2020 Share Posted September 18, 2020 Hello! 70' Monte Carlo, TH400, 402 BBC Looking for suggestions on where this leak can be coming from. Replaced Real and Pinion seals, O ring inside the modulator valve, new pan and gasket. Torque Converter looks clean as well, but dripping maybe a quart a week slowly while parked. Drip is on the Right side, little behind the passenger seat.D49F2110-0091-4BE1-A0F5-F0AC454D509B.pvt.zip67A3DF80-335C-4234-80F8-6D90DFB2F09B.pvt.zip7DA28CC7-4E8D-4D8D-A2EB-8041B0ABB36A.pvt.zip Thanks in advance for any tips or suggestions Quote Link to comment Share on other sites More sharing options...
MC1of80 Posted September 18, 2020 Share Posted September 18, 2020 Dipstick o-ring. Quote Link to comment Share on other sites More sharing options...
1970mcss Posted September 18, 2020 Share Posted September 18, 2020 My car was leaking at the shifter shaft seal. We replaced a lot of those back in the day. The seals were not designed well. I would take a look there Quote Link to comment Share on other sites More sharing options...
cny first gen 71 Posted September 18, 2020 Share Posted September 18, 2020 I replaced the pan on my th350 with a chrome pan and it leaked pretty good. Went back to stock pan and hasn't leaked a drop since. Just a thought. Quote Link to comment Share on other sites More sharing options...
Dtret Posted September 18, 2020 Share Posted September 18, 2020 Cork gasket on the pan Quote Link to comment Share on other sites More sharing options...
Leghome Posted September 18, 2020 Share Posted September 18, 2020 I have seen a lot of chrome pans leak Quote Link to comment Share on other sites More sharing options...
Dtret Posted September 18, 2020 Share Posted September 18, 2020 Pan bolts too tight squishing gasket out ? Quote Link to comment Share on other sites More sharing options...
71MonteCarloMD Posted September 19, 2020 Share Posted September 19, 2020 7 hours ago, MC1of80 said: Dipstick o-ring. Agree w Thomas here... 1 Quote Link to comment Share on other sites More sharing options...
72RustBucket Posted November 23, 2020 Share Posted November 23, 2020 It's not over filled is it? Too much fluid = too much pressure = good luck gasket. Quote Link to comment Share on other sites More sharing options...
BillyWalsh Posted November 24, 2020 Author Share Posted November 24, 2020 Thomas was right, Dipstick O-Ring! 2 Quote Link to comment Share on other sites More sharing options...
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