Technical timing chain oil Slinger sbc.

This should be easy, but I can't find it. When did they stop using the concave disk (oil slinger) between the crank timing gear and the harmonic balancer? Do I need one?
I pulled a spare 350 ( 1974 police, auto, 4bbl ) apart and it didn't have one. I am working on a late 60 s lg journal 327.

 

I'm not sure when they did away with them, but the last 2 motors I built didn't use them either. I think they were more to deflect oil away from the front seal than to sling oil for lubrication purposes.

 

Thanks for the quick response; I'm really trying to get this thing finished up.

 

I've never personally seen one in the boatload of SBCs I've had apart. From what I heard though they were used from the 50s to the very early 60s.

 

never seen one on a sbc but AMC 290-401 v-8's use them.

 

Thanks, that's 3 for 3, so I'm going without it. Might have been in the earlier small journal engines.
I haven't seen one of those in a while.

 

I can back that up with I've never seen one in any of the three hundred and sixty SBC's I have built. JW

 

The last ones I saw were on 327's. By the advent of the 350, it appears that they were gone.

 

I've never seen one either and the bulk of the sbc's i've build have been in the 58-66 years.

Tony

 

Yep -never seen one.

 

never seen one on a sbc or a BBC , they probably got rid of them when seal technology got better and with the use of PCv systems as there was a lower crankcase pressure

 

anyone got a pic of one?

 

I think it's kinda like Bigfoot.
Rumor has it the very early engines had them and they were to sling the oil away from the seal.

 

That's what I remember, the one on the left. I'm onward and upward now; thanks to everyone for their replies.

 

That's because they really didn't do anything but cost money and time on the****embly line. If I had a mill that had one when I pulled it down I would put it back and if I didn't I would forget about it.

 

Bigfoot found, hair samples and DNA sent to the lab...............................
View attachment 2814395

 

When I was right out of high school. I tore core motors down for a machine/race engine shop. I couldn't swear to it but I thought some of the early 327's still had them.

 

They didn't lose 'em until they went large journal.

 

I have never seen one in a small block either. Most engines thar I have seen with a slinger were ones with a rope frontseal, not a neoprene seal like SBC use

 

They aren't thick BUT if your***** about "things" you would think that without it the crank stub/balancer would be that much more inward moving your lower pulley inwards also. Maybe there's 2 diff. length stubs, one for with and for without?

 

I had one on my 1957 283 283 HP and my smaller 283 220 HP engine.
The one on my low horse engine gave me fits on low temperature days.
Squealed like a cat in heat, only when very cold.
Took it out and threw it in the barrel.