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Does anyone make a piston for stock stroke 400 with a 6.760 rod?

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Why would you want a long rod????

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Why not?

Best engine I've ever owned was my low deck 451, zero deck flat tops, 440 crank 6.76 440 rods, Eddy heads, 590 purple shaft in at 104. Ran 9.90's at 3050 pounds through the mufflers. Very streetable too.

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While you're 451 was quite outstanding............

I think the point others are trying to make is that the 383/400 already has a better rod-to-stroke ratio and anything more is beyond a point of valid results/return. Meaning, not worth the cost of custom pistons & rods for the marginal gain.

There's no cubes gained like the long rod 400/451 combo, just less piston/rod angularity and a longer dwell time at TDC. All of which is debatable to many on this board.

Good topic though, I'd like to see a build to see a roller cam'd 383 hammer'd out on a dyno.