70" 340 vs 72" 340 specs please

If the stroker makes more power, its due to more CI. Increasing the stroke to make more power is the wrong way about it. Increasing the stroke just adds friction and piston speed. Why the 273 became the 318 - 340 by increasing the bore and not touching the stroke.

Yeah then came the 360 but at first it was just used in heavy non performance cars Wasn't till the 340 was dead and gone before the 360 was thought as a performance engine

If you could punch out a 318/340 bore to get 410 CI, it outperform the 4 inch strokers.

Oh the extra torque, that is what rearend gears are for. You increase torque by using a high gear - 4.10, 4.30 gears for street tires, 4.88 and higher for taller slicks tires