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Oil pan or rear main leak?
#1
I am trying to figure this out--my 351C has leaked since the rebuild. Today I got under it and took a closer look. I pulled the small cover off the bellhousing and it is dry inside, the oil is coming out between the pan and the block plate. I would think if it were the rear main, there would be oil inside the bellhouse. Does anyone know any better way to diagnose this?

[Image: 4zw1hv.png]
Dave

1931 Ford Model A Station Wagon
1969 Mach 1 - 351C, TKO-600, 4WDB, R&P, A/C, Shaker, Fold Down, etc.
1972 Mach 1 - 351C, FMX, PDB, PS, A/C, Fold Down, Console
1996 Mustang Cobra Convertible - 10psi Procharger
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#2
I think it is likely you've done it. However I have seen two instances where the cam bore plug was leaking a very small amount between the block and the block plate, PITA to fix but...... Chuck
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#3
The oil leak is fixed! Turned out to be the rear pan gasket. The rubber piece somehow popped out on one end while I was installing the pan so that was the source of the leak. It was immediately obvious as soon as I pulled the pan.

This is one leaky car. So far, I have fixed:
- Cowl leak (a several month rust repair project)
- Rear window leak
- Rear diff leak (one of the nuts/bolts was leaking)
- Trans modulator leak
- Transmission yoke leak
- Power steering pump leak
- Power steering hose leak
- Oil pan gasket leak

So I think I may have one more to deal with. I put some fresh cardboard under it to watch the transmission pan. But, I am making progress!

[Image: 4zw1hv.png]
Dave

1931 Ford Model A Station Wagon
1969 Mach 1 - 351C, TKO-600, 4WDB, R&P, A/C, Shaker, Fold Down, etc.
1972 Mach 1 - 351C, FMX, PDB, PS, A/C, Fold Down, Console
1996 Mustang Cobra Convertible - 10psi Procharger
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#4
69 Rustang;89175 Wrote:The oil leak is fixed! Turned out to be the rear pan gasket. The rubber piece somehow popped out on one end while I was installing the pan so that was the source of the leak. It was immediately obvious as soon as I pulled the pan.

This is one leaky car. So far, I have fixed:
- Cowl leak (a several month rust repair project)
- Rear window leak
- Rear diff leak (one of the nuts/bolts was leaking)
- Trans modulator leak
- Transmission yoke leak
- Power steering pump leak
- Power steering hose leak
- Oil pan gasket leak

So I think I may have one more to deal with. I put some fresh cardboard under it to watch the transmission pan. But, I am making progress!

Sounds like you'll be able to paint that garage floor pretty soon! Tongue

[Image: 2rr7aiv.png]

Just cruising along minding our own business when BAM!!! The LAWS show up.
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