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Thankyou Brian, helping me confirm my theory..lol. I know 36-38 was a compilation of parts. Henry didn't wast anything...lol. check out my fb. Look up hotrodjay to see this engine running. I deleted the video from my phone. You can see it on my fb. Putting it back together the way it was, thanks...

That's what I was thinking, need confirmation. Also you can see my 37 running realy good on fb. Look up hotridjay...at the end of the video i forgot to turn the ignition on...lol. I was excited...haha

Brian, do you have a picture?

Drain pipe ended in early 35. Crankcase ventilation ended the need for a drain back pipe off the main cap. Also due to a better oil pump aswell. The question is does my main cap fit a lower seal or is it a 36 cap where it didn't exist yet? 37 was the 1st year for the lower seal. Maybe I have an...

I know about the drain pipe, ford canceled that in early 35 due ti the crank case ventilation system. Question is does this particular main cap have a lower seal or not? If my engine is a late 36/early 37...maybe there is no seal. Is there a seal for this cap or not? Ready to install the pan but...

We're all flathead lovers here weather modified or stock. We post here for help and advice. If there is input to be given please share. We're all purists in one way or another, weather stocker or a traditionally built flathead with the correct pieces. I like and respect them both. If someone...

Also when was the last time the pan was off? Just pulled mine a week ago and had a quart of sludge in it. (My engine sat for decades) I'd change the oil, add 4 quarts and it would be a quart overfilled. I pulled the pan and cleaned out atleast a quart of sludge buildup. Sludge is muddy and wont...

I also noticed the bolt just above the crank case vent on your pan is wet with oil. Your pan gasket looks pretty wet with oil aswell. Looks like the leak is coming from "above" at the gasket. Is it possible you have to much oil in it? 4 quarts for non canister filtered flatheads and 5 quarts...

35-48 had this, it's for crank case ventilation. 4 quarts no filter and 5 quarts with oil filter. It's possible you might be missing the tube under the intake manifold or have a hole in it allowing oil to pass through.

While y'all are trying to help me I figured I'd brows some other posts and see if I can help someone else to return the favor😉

Late 36 early 37? Does my rear main cap differ from a 37? Do I have a 36 cap on my 37?

What do I have here?...lol

I did...lol, thanks for your patience.

Ok so I figured out how to posts pictures finally...my error. Here they are...what do you y'all think?

Side view of the lower rear main slinger seal for 37-41 flathead.

37-41 lower rear main seal out of the package.

This is the "lower" rear slinger seal I bought for my rear main cap. Says it fits 37-41 engines. It doesn't fit the main cap in the previous pictures that's in my 37 flathead.

Rear main cap on my 37 21 stud

37 main cap top view

Rear main cap on my 1937 21 stud