Timing Covers

This page covers our new reproduction timing covers first, then we list and picture the 10 different styles of refurbished original timing covers Chrysler used over the years.

Another 440 Source exclusive big block Mopar part! These awesome fully CNC machined adjustable timing pointers bolt on to the front of the engine, just like a regular pointer would. They're fully adjustable, allowing you to set TDC exactly where it should be with the damper, etc you are using. These work with factory (7.25") diameter dampers. A super cool part that nobody else is going to have, but everyone's gonna ask where you got it!

Part No: 200-1073 - Billet Aluminum Timing Pointer - Price: $39.95

Shown above is our BRAND NEW REPRODUCTION plain steel timing cover, ready for paint or powder coating. In the past, the only aftermarket timing covers available for the Big Block Mopar were chrome, which made it very difficult for those who wanted to personalize their engines with a custom painted or powder coated timing cover. Stripping and/or sanding the chrome off was a very labor intensive & expensive process. Those who went with a used swap meet or junkyard cover, (if they could even find one) often had to deal with warped gasket rails, stripped oil pan bolt hole threads, rust, or covers that were badly scraped up by a defective damper. With our beautiful BRAND NEW REPRODUCTION covers, you can say goodbye to all those problems. These fit all years and models of big blocks, including Hemis. And now, we've made them available at a very affordable price.

Part No: 121-1012 - Timing cover - Plain Steel -  NEW. Price: $18.95

We also offer this plain steel timing tab to go along with the above cover.

Part No: 121-1014 - Timing tab - Plain Steel -  NEW. Price: $5.95

Shown above is our BRAND NEW REPRODUCTION chrome plated timing cover. The plating and overall quality on these is among the best we've ever seen. These fit all years and models of big blocks, including Hemis. And, they're now available at a very affordable price.

Part No: 121-1011 - Timing cover - Chrome Plate -  NEW. Price: $15.95

We also offer this chrome timing tab to go along with the above cover.

Part No: 121-1013 - Timing tab - Chrome Plate -  NEW. Price: $5.95

Our ARP polished stainless steel timing cover bolt kits are exactly what people mean when they say "show quality." Made from ARP's proprietary "300" stainless steel alloy, they are rated at a minimum 170,000 PSI, which is even stronger than a grade 8 bolt! And, you can't beat the quality, shine and corrosion resistance of polished stainless. Nothing resists the ravages of weather, time and even repeated tightening and loosening like stainless. These are truly maintenance free! On factory timing cover bolts, the lower 4 are larger diameter than the upper 4, meaning you must change wrench or socket size when changing the timing cover. These are nice because they feature a reduced diameter 3/8" drive 12pt head on both the large and small bolts, so there is no need to change the wrench or socket when attaching or removing the cover for cam timing changes, etc. Matching polished stainless washers are included. Small details like this can really make a car "show quality."

Part No: 129-1012 - ARP Bolt Kit - Timing Cover - Polished Stainless - Price: $19.95

 

Used Factory Timing Covers:

Putting aside the difference in timing tabs (which will be covered below,) two different types of factory timing covers were used. Shown on the left is the early style with nearly vertical reinforcing ribs within the "triangle" stamped into the cover. All 2120627 covers we have seen are this style. Most later covers (most 2658454 and later) have the "plain triangle" design shown on left. This type is more common. The rest of the differences between covers have to do with the timing tab. Below we cover the various part numbers.

Shown above is cover 2120627, 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.

Part No: 100-1056 - Timing cover - Short straight tab -  Used. Price: $39.95

Shown above is a 2658454 cover. This will have 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 tab -  Used. Price: $NA

Shown above is a 3698614 cover, 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 - Used. Price: $39.95

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 - Used. Price: $NA

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. Price: $39.95

Shown above is most likely a 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 - Used. Price: $39.95

Shown above is cover 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 - Used. Price: $39.95

Shown above is a 1858639. 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 - Used. Price: $49.95

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  440 426 413 400 383 361 350
1979 4100436(truck only) N/A N/A   N/A N/A N/A
1978 4095541
4100436(truck only)		 N/A N/A 4095541 N/A N/A N/A
1977 4027560 N/A 1858639(HD truck only) 4027560 N/A 1858639(HD truck only) N/A
1976 4027560(after 1/5/76)
3830797(up to 1/5/76)		 N/A 1858639(HD truck only) 4027560(after 1/5/76)
3830797(up to 1/5/76)		 N/A 1858639(HD truck only) N/A
1975 3698614 N/A 1858639(HD truck only) 3698614 N/A 1858639(HD truck only) N/A
1974 3698614 N/A 1858639(HD truck only) 3698614 N/A 1858639(HD truck only) N/A
1973 3698614 N/A 1858639(HD truck only) 3698614 N/A 1858639(HD truck only) N/A
1972 2658454 N/A 1858639(HD truck only) 2658454 N/A 1858639(HD truck only) N/A
1971 2658454 2658454 1858639(HD truck only) N/A 2658454 1858639(HD truck only) N/A
1970 2658454 2658454 1858639(HD truck only) N/A 2658454 1858639(HD truck only) N/A
1969 2658454 2658454 1858639(HD truck only) N/A 2658454 1858639(HD truck only) N/A
1968 2658454 2658454 1858639(HD truck only) N/A 2658454 1858639(HD truck only) N/A
1967 2658454 2658454 1858639(HD truck only) N/A 2658454 1858639(HD truck only) N/A
1966 2658454 2658454 1858639(HD truck only) N/A 2658454 1858639(HD truck only)
2658454		 N/A
1965 N/A 2120627 1858639(HD truck only)
2120627		 N/A 2120627 1858639(HD truck only)
2120627		 N/A
1964 N/A 2120627 1858639(HD truck only)
2120627		 N/A 2120627 1858639(HD truck only)
2120627		 N/A
1963 N/A 2120627 1858639(HD truck only)
2120627		 N/A 2120627 1858639(HD truck only)
2120627		 N/A
1962 N/A N/A 1858639(HD truck only)
2120627		 N/A 2120627 1858639(HD truck only)
2120627		 N/A
1961 N/A N/A 1858639(HD truck only)
2120627		 N/A 2120627 1858639(HD truck only)
2120627		 N/A
1960 N/A N/A 1858639(HD truck only)
2120627		 N/A 2120627 1858639(HD truck only)
2120627		 N/A
1959 N/A N/A 1859234 N/A 1859234 1859234 N/A
1958 N/A N/A N/A N/A N/A 1737631 1737631
Numerical Listing Application Type
1737631 1958 only  
1858639 1960-77 HD 361/413 Long straight tab
1859234 1959 only  
2120627 1960-65 Short straight tab
2658454 1966-72 Short curved tab
3698614 1973-75 Medium curved tab
3830797 Early 76  
4027560 1/5/1976-1977 Large curved tab
4095541 1978-end Large curved tab
4100436 1978-end truck  

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