Dissapointing performance

Dusterguy said

And gears or converter doesnt change engine power. Like I said 1/8 mile speed tells that car has no power more than before. Something isnt right.

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That is correct. But sure as heck changes the mechanical torque at the consequence of Rpms. If you put a 6.18 rear gear in a slant six it would really do a fantastic burnout on 120 hp.