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Anyone have experience with Comp #7840 pushrods? Summit lists them at 9.315" which I think is a bit longer than stock. Would these work with hydraulic lifters and non-adjustable stock rockers on a 440?

Anyone use an Ultradyne #3038896 cam? Lift is 485in/507ex. Duration at .050 is 231/239. The car is a race only '74 Dart, 440/727/3:91 gears. Stock 213 heads with a Weiand single plane and Holley 750dp. About 3,000 stall with 235-60-15 M/T drag radials. Rpm through the lights is 5,600. The...