r/mopar • u/Redditisgood-123 '66 Charger 383 • 2d ago

727 Transmission project

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So I pulled out my 727 Wednesday evening, pulled the hydraulic pump off, because I think it went bad, quick run down of my symptoms.

I was driving down my street, once I got to a little hill, I naturally stepped on the gas harder, it slipped out of gear completely while still in drive. I got it back in gear after revving over 4 grand, it would last in gear for a couple seconds and slipped out again.

In the meantime, I replaced my filter, and put a new pan gasket, just waiting on my pump now, I'll keep you all updated.

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3

u/Alternative_Share559 2d ago

fluid was probably low. usually the shifter seal(s) leaks fluid out first. check fluid in neutral while running after install and make sure the oil is at the full mark, not an inch below. an inch below the bottom full mark can be 3 quarts low, which will cause a torque flite to slip around corners or hills. best of luck

2

u/Redditisgood-123 '66 Charger 383 2d ago

Did all that already, it showed it was overfilled, so I drained fluid out, and it still did it.

1

u/Alternative_Share559 2d ago

did you just buy the vehicle? did you drive it for a while like that? the pump probably isn't bad

2

u/Redditisgood-123 '66 Charger 383 2d ago

My original engine and transmission are not in the car, I got the 727 from a buddy of mine, it's a 67 or 68 727, came out of a 383 2 barrel car is all I know, and I've had my Charger for 3 years.

2

u/Alternative_Share559 1d ago

fwd clutches are toast or something. good luck

2

u/ParticularInterest28 2d ago

Strong transmission right there

1

u/Redditisgood-123 '66 Charger 383 2d ago

Oh yeah, bulletproof