440 timing mark tab

[The_Handier_Man1]

Sent: 7/18/2008 12:23 PM

Guys I need help , I have a 73 440 and when I looked at the timing tab to set the timing I can not read anything. Sanded off the rust and still no luck . There is a hole in the tab and I assume that the hole will represent zero deg.. I have a variable advance timing light so I can set it a 8 deg. and put the mark at this hole . Will this be correct?

My timing tab is one solid tab, no slot, and the tab extends out the full length with just one hole in it about where yours has a hole.

Thanks

Mike

[DaveVA78Chieftain]

Sent: 7/21/2008 11:52 AM

Go to http://www.440source.com/ and then select the timing cover section.  Hopefully the picture you need is there.

Dave

[lumpy]

Sent: 7/21/2008 1:01 PM

Dave , you the man . I copied the link and it worked gave me the right one. in the timing cover section there is a list of all the tabs used in what year.
I will post the pictures when I can for all so there can be a record.

On to the timing

THANKS

Mike

[DaveVA78Chieftain]

Sent: 7/21/2008 1:23 PM

Courtesy of 440Source.com2120627:

With a short, straight timing tab which goes up to 15 degrees before TDC, marked in 5 degree increments. Used on all passenger car big blocks from 1960-65.

440Source.com Part No: 100-1056 - Timing cover - Short straight tab2658454
Has a 3/4" wide curved tab marked in 5 degree increments. This cover was used on all big blocks from 1966-72, making it the desired cover for nearly all muscle car applications.

Part No: 100-1057 - Timing cover - Short curved tab3698614
Used from 1973-75. This is similar to the above cover, however the length of the tab has been extended to 1". This was most likely done so that the cover would work with both cast and forged crank dampers, as 1973 was the first year of cast cranks in 440's.

Part No: 100-1058 - Timing cover - Long curved tab - 5deg marks  3830797
Shown above is most likely a 3830797, used in early 1976. The tab dimensions are identical to the 3698614 cover above, the only difference is that this cover is marked in 2 degree increments instead of five. This is a nice cover for those who aren't incredibly concerned about originality, as the extra timing marks make it a little easier to dial in exact timing. This type of cover will work with either forged or cast crank dampers.

Part No: 100-1059 - Timing cover - Long curved tab - 2deg marks  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 4095541
Used in 1978 only. This is very similar to the 4027560 cover above, except the tab is shorter and only goes to 10 degrees instead of 20. These were always used with cast crank engines, and make great replacements for later model trucks, ramchargers and motorhomes.

Part No: 100-1060 - Timing cover - "U" tab - Short  4100436
Used in 1978 and 79 on trucks and vans with 440's. This has a unique "tube" that bolts onto the timing tab. The before TDC side goes all the way to 30 degrees, marked in 2 degree increments.

Part No: 100-1062 - Timing cover - "Tube" type  1858639
Shown above is a . These covers were used on heavy duty truck 361/413's from 1960-77. They will only work with damper 1858382 (our part #100-1049), which has a reduced diameter. Notice how the tab is placed further inward on the cover to accommodate the smaller damper.

Part No: 100-1063 - Timing cover - Long straight tab