Torque converter

[green 66]

Can I run a 71 400 torque converter behind my 73 440?

 

[Lefty71]

Yes. Make sure they are both from a cast/cast or forged/forged crank engines, unless you already know the parts you are running are zero balance.

 

[green 66]

Here is a pic of engine block stamping.Should this be an internal or external balance?

 

[Lefty71]

4 = 1974
T = Built at Trenton engine plant
440 = 440 cubic inches
E = CAST CRANK


External balance engine built on the 29th of October by 2nd shift

 

[green 66]

Thanks Lefty,answered a lot of questions there. My h/b is the skinny one and t/c has no weights.

 

[green 66]

Pulled oil pan today this is what I found. Thought cast cranks were externally balanced. Glad I opened it up! Now I know what I have

 

[wyrmrider]

looks like that one is balanced
what concerns me is the mallory in the left pic if that is what it is below the hole
that comes out it destroys your motor
ask me how I know
so what do you think you have?

 

[Lefty71]

I see an original cast crank engine, that has been rebuilt with non-original parts.... That sure looks like a thin damper, and a forged crank to me, so I'd say that setup is zero balance, and so should your flex plate/torque converter. I don't see as good as I used to, but I don't see any Mallory metal.

 

[green 66]

We are going with neutral t/c and h/b. One more question,how does the oil pick up tube come off. Looks like it could use a new one.

 

[Lefty71]

It is threaded into the block, so it simply unscrews. 3/8" NPT unless someone has modified the block, then it may be 1/2".

 

[green 66]

Just put a pipe wrench to it?

 

[Fran Blacker]

Just put a pipe wrench to it?

Unscrews, might help to turn crank to spot where you have more room.

 

[green 66]

Tried twice now and it’s tighter than a bulls ***! Don’t want to break it. Can you just replace the screen?

 

[Lefty71]

Put some heat on the pipe, near the block. Don't take a torch to the block! No way to replace the screen that I know of, certainly without taking the whole pickup off first anyway. Use the pipe wrench close to the part where the threads are, not the middle or far end.

 

[green 66]

K thanks,will give it a try

 

[green 66]

Got transmission back,installed-no more vibration? Bad bearing in tailshaft on old one