1st 530 lbs-ft for a 410 engine is 1.29:1 lbs-ft per cid that a reasonable amount there is engines that make more but seem to fall into highly tuned race engines. Dont see to many making above 1.45:1 = 595 lbs-ft.
2nd an engine would not make anything so low in torque at the wheels.
Say we're in 4th gear 1:1 with 3.91 and 28" tires which would be an effective overdrive of .85. So take my guesstimate of 488 lbs-ft at peak hp x 3.91 x .85 = 1622 lbs-ft to the tires.
If there is no loss in torque from crank to wheel that would mean there would have to be a loss in peak rpm to compensate.
Something is still off.
