Timing Point

[Hanover Mopar]

Cars runs great so never had to screw with timing on the 440 but if I did, I assume I would use the "0" pointer mark which was marked by a previous owner.

Is that is correct and if it is what is the horseshoe shaped cut in the metal for

 

[Canyon707]

I think you shoud not assume anything. Find TDC and go from there.

 

[69a100]

Cars runs great so never had to screw with timing on the 440 but if I did, I assume I would use the "0" pointer mark which was marked by a previous owner.
View attachment 366242

If it ain't broke, don't jack with it!

I think you should not assume anything. Find TDC and go from there.

This^^^^, never assume anything! If you don't know what your doing or how to do it. READ and then ask questions. The cutout is to save weight.

 

[ws23jrt]

The cutout saves weight? -- If there were no fingers on the cutout it would save a few grams more.

To me that "cutout" looks like a mounting place intended for a sensor/pickup of some kind.

 

[Jcharger]

Do you know how to find TDC? (identify the compression part of the stroke on #1 (probably pretty close to when the distributor points to the #1 plug lead) and then find the top of the piston travel with a tdc tool that you can pick up at most auto parts stores. (e.g., https://www.summitracing.com/oh/par...mc=pla-google-_-shopping-_-srese1-_-comp-cams)) When you find it, there will probably be a scribed mark on your balancer and if all is good it should line up. I learned the hard way about assuming things were done right by someone before me and when something is straight forward to test, I now test it.

 

[Hanover Mopar]

I do know how. Just asking what the hell the cutout is for. Doesn't make much sense to me

 

[Hanover Mopar]

No sensors in 1970

 

[oldbee]

Probably a cutout for future crank sensor?? Factory stuff hard to figure sometimes.

 

[khryslerkid]

Yours is the fifth one from the top, with 20*
http://www.440source.com/timingcovers.htm

Shown above is a 4027560, used after 1/5/1976 through 1977. Interestingly, the factory returned to including markings on only the after TDC side, similar to the early covers with the straight tabs. This tab is longer however, going all the way to 20 degrees. These are easily identifiable by the large "U" shape in the after TDC side of the tab. The 2 degree markings make setting accurate timing easier. These were always used with cast crank engines, and make great replacements for later model trucks, ramchargers and motorhomes.

Part No: 100-1061 - Timing cover - "U" tab - Long - Used.

 

[cudajunction]

The cutout is for use when using an allen scope timing probe. Which is what most chrysler dealerships used from the late 70s into the late 80s.

 

[Hanover Mopar]

The cutout is for use when using an allen scope timing probe. Which is what most chrysler dealerships used from the late 70s into the late 80s.

That answers it.

Thanks, it's appreciated