Our fluid dampers are very similar in design to the type sold by Fluidampr. They have an internal ring surrounded by a thin film of high viscosity silicone fluid, which allows the ring to rotate freely within the housing on nylon positioning guides. This allows the outer shell to "spin up" faster then the ring as the engine accelerates, which increases horsepower by reducing the amount of weight the engine has to move by over 33% compared a standard elastomer type balancer. Also, the housing is a one piece laser welded design, so there is never any danger of the ring coming loose or timing marks slipping. These include printed timing marks to 50 degrees, and a symmetrical pulley bolt pattern. We have designed these dampers based on detailed factory specifications, to be sure there will be no problems with fit or finish. These are NOT the same as the imported garbage many other vendors are selling. These are AWESOME quality. Take a look at the picture and judge for yourself. The chrome is so highly polished, you can see the reflection of our ceiling in the damper if you look closely.
440 Source is an official SFI approved participating manufacturer. The SFI foundation performs destructive testing on sample fluid dampers to ensure that the steel and methods of construction used meets their stringent requirements. This means they spin the sample dampers up to 12,500 RPM for over an hour, then they literally rip the metal apart while measuring how much force it takes for it to bend, stretch and finally break. SFI's minimum specifications to certify a damper to pass their 18.1 testing includes a yield strength of 40,000 pounds, a tensile strength of 60,000 pounds, and a maximum 10 percent elongation. Our fluid dampers not only passed the testing, but far exceeded SFI's minimum specs. Our yield strength was 52,000 pounds (over 30% stronger than required). Our tensile strength was an amazing 97,000 pounds (over 60% stronger than required) and our elongation was 25% (2.5 times the required minimum!) Not only do you get this kind of GUARANTEED quality, but you get it at a fraction of the cost of the name brand units. These dampers are for internal (neutral) balance engines only, they will not work for factory cast crank (externally) balanced engines.
Shown here is our new high strength steel Damper. They are supplied in a chrome finish for good looks and corrosion protection. This damper is the perfect choice for those who want a damper that looks similar and interchanges with a factory unit, but with all the design features you'd expect from a modern performance unit. These dampers are for internal (neutral) balance engines only, they will not work for factory cast crank (externally) balanced engines.
Our new reproduction Black high strength steel dampers are a great choice for those who want a replacment damper that interchanges with a factory unit. These include nicely engraved timing marks to 60 degrees, and a symmetrical pulley bolt pattern. We have designed these dampers based on detailed factory specifications, to be sure there will be no problems with fit or finish. The flat black surface can easily be painted engine color if desired. A nice choice at a nice price.
This super cool damper bolt has a 1/2" drive socket built into it, which makes it super easy to turn over your engine by hand with a breaker bar or ratchet.
We've taken the factory original and hard to find damper bolt and made it even better by reproducing it in a high strength Grade 8 material (along with the unique heavy washer).
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.
Our timing tape features a zero to 60 degree scale (plus marks every 90deg) and fits all Big Block Mopar 7 1/4" diameter dampers. These are a great high performance item that helps to solve several problems. On engraved or printed dampers (even if they have the full timing scale printed) the lettering can be hard to read against the chrome background. This tape, with big, bright white lettering against a black background makes it quite a bit easier to see when setting timing, especially down in the dark near the bottom of the engine. Second, due to tolerance stack up, it's somewhat common to find the zero mark on your damper can be off by a degree or so. By using the tape, it allows you to find exact TDC, and they apply the tape at exactly that point. This is a much better and inexpensive alternative to modifying your timing pointer, or having your damper re-degreed.
Shown above is original truck/motorhome damper with factory Chrysler part number of1858382, used on heavy duty (HD) trucks and motorhomes with internally balanced forged cranks. It measures 6 1/4" diameter by 1 5/8" wide. These first came into use in 1960, when the heavy duty/industrial versions of the 361 and 413 replaced the early hemis (354/392, etc) in Dodge's medium and heavy duty lines of trucks. They continued to be used unchanged until Dodge discontinued their medium and heavy duty truck lines in 1977. All of the these balancers have the standard offset pulley bolt pattern. These are always used with timing cover #1858639 (our part number 100-1063, available separately.) These are inspected and reconditioned factory original parts.
Shown here is damper with Chrysler part #3614374, used on 400's with external balance cast cranks, which can usually be found in a passenger car and/or automatic trans application (applications with 400 engines and manual transmission applications used forged cranks.) It measures 7 1/4" diameter by about 7/8" wide. Although it is similar to the "six pack" dampers, the weight on these is much thicker, and more closely resembles the weights on the cast crank 440 models below, even though the ring thickness is similar to an internal balance damper. One easy way to identify these (and not confuse them with six pack models) is the small half circle that is cut into one side of the counterweight. This is visible in the picture above at about the 3 o'clock position. This is the only damper that will have this small cut. These are used items, that will be in "as removed" condition from the engine, not cleaned as shown in the photo. We are selling off our supplies of used engine parts, so these will be available only while supplies last. Get 'em while you can!
Shown here is damper #3577785, used on 440's with cast cranks from 73-75. It measures 7 1/4 diameter by 1 5/8 wide. It is an externally balanced model, (notice the approx. .275" thousands thick counterweight which contains the words "use with 440 cast crank only") Notice that the outer surface of the damper is straight, which makes it easy to differentiate from the later "bullet nose" cast crank damper (3830482). These are used items, that will be in "as removed" condition from the engine, not cleaned as shown in the photo. We are selling off our supplies of used engine parts, so these will be available only while supplies last. Get 'em while you can!
The Chrysler #2658457 damper is an early forged crank internal balance type, measuring 7 1/4" diameter by about 7/8" wide, with the offset (pre 72) pulley bolt pattern . Most of these types of dampers will be Chrysler # 2275897 or 2658457. These were available with either the solid ring (shown here) or the cut ring (listed separately), and the holes in the hub may be either round or square. The difference appears to be based on the supplier Chrysler happened to use, as we have seen both types used for the same year, part #, etc. These were used from about 1962 until 71 with all forged crank engines. In 72, the bolt pattern was changed to be symmetrical and therefore a different part and associated part # were used. These usually do not have part numbers cast into them (although sometimes 2658457's will be marked on the rear inside of the hub.) Check for the offset bolt in the pulley bolt pattern to be sure. These are used items, that will be in "as removed" condition from the engine, not cleaned as shown in the photo. We are selling off our supplies of used engine parts, so these will be available only while supplies last. Get 'em while you can!
The Chrysler #2658457 damper is an early forged crank internal balance type, measuring 7 1/4" diameter by about 7/8" wide, with the offset (pre 72) pulley bolt pattern . Most of these types of dampers will be Chrysler # 2275897 or 2658457. These were available with either the CUT ring (shown here) or the solid ring (listed separately), and the holes in the hub may be either round or square. The difference appears to be based on the supplier Chrysler happened to use, as we have seen both types used for the same year, part #, etc. These were used from about 1962 until 71 with all forged crank engines. In 72, the bolt pattern was changed to be symmetrical and therefore a different part and associated part # were used. These usually do not have part numbers cast into them (although sometimes 2658457's will be marked on the rear inside of the hub.) Check for the offset bolt in the pulley bolt pattern to be sure. These are used items, that will be in "as removed" condition from the engine, not cleaned as shown in the photo. We are selling off our supplies of used engine parts, so these will be available only while supplies last. Get 'em while you can!
We carry this damper with Chysler part number 3614371, used on forged crank engines from 1972-75. Appearance and dimensions are the same as other forged crank dampers, the only difference is the pulley bolt pattern in the '72 and later, which is symmetrical. These will usually have the casting number on the rear of the hub. We have only seen these with the cut ring. These continued to be used as part 3830183 for 1976-79. These are used items, that will be in "as removed" condition from the engine, not cleaned as shown in the photo. We are selling off our supplies of used engine parts, so these will be available only while supplies last. Get 'em while you can!
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