Our new super strong solid flexplate is an awesome value. Strong enough to stay together behind even the highest horsepower applications, these work great for hot street cars as well. 440 Source is an official SFI approved participating manufacturer. The SFI foundation performs destructive testing on sample flexplates to ensure that the steel used meets their stringent requirements. This means 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 flexplate to pass their 29.1 testing includes a yield strength of 40,000 pounds, a tensile strength of 60,000 pounds, and a maximum 10 percent elongation. Our flexplates not only passed the testing, but far exceeded SFI's minimum specs. Our yield strength was 52,700 pounds (over 30% stronger than required). Our tensile strength was 67,520 pounds (over 12% stronger than required) and our elongation was 28% (almost 3 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 includes all possible bolt patterns; Large with 5/16" bolts, small with 5/16" bolts, and 7/16" bolts for all aftermarket high performance and racing high stall converters. These are for internal (neutral) balance, they have no weights welded on them. This flexplate fits all standard 6 bolt crank flanges, and works for both big block AND small block applications!!