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. 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 minimum 10 percent elongation. Our most recent testing was done on May 26th, 2018. Our fluid dampers not only passed the testing, but far exceeded SFI's minimum specs. Our yield strength was 89,760 pounds (well over twice the required minimum of 40,000 pounds). Our tensile strength was 90,610 pounds (over 50% stronger than the required 60,000 pounds) and our elongation was 23.73% (that's almost two and a half times the required minimum of 10%!) 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. We recommend using our 109-1526 Damper bolt with these.
Our new Internal / External Balance Black high strength steel dampers are a great choice for those who want a high quality replacment damper that interchanges with a factory unit. These can be used for either forged crank (internal balance which includes our stroker kits) or factory 440 cast crank replacement applications. When using these for internal balance, simply unbolt the weight on the rear of the damper. For external balance 440 cast crank applications, just leave the weight on. 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 for all big blocks, and for replacing used or damaged dampers on cast crank 440's, there's no better way to go. We now also offer our 200-1139 "Six Pack" external weight (sold below separately), which allow this damper to be used with factory six pack external balance applications.
For those who like the factory stock look, 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) Use these with ALL of our aftermarket SFI Dampers, as well as all factory big block dampers (except for 426 Hemi and some Industrial applications.) Includes bolt and washer. Chrysler originally sold these as part #1731525 for the bolt and 1855561 for the washer
Our Performance 12 point damper bolt is a great looking option that features grade 8 strength, black oxide coating, and a price that doesn't break the bank. This heavy duty bolt works great with all our performance dampers and includes the super thick custom washer as well.
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.
New Heavy Duty Alloy woodruff key. Use for all engines, all years. This "performance" style uses extended "points" on the top of the key to allow more contact area with the crank gear of the timing set. Package of ONE woodruff key.
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