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2011-2014 Mustangs
2011-2014 Mustang Talk
Better understanding gear ratios relation to horsepower
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<blockquote data-quote="JohnRichard" data-source="post: 13780986" data-attributes="member: 156405"><p>all your plans 1 2 and 3 changes the torque peak location... I would suggest finishing the engine then move towards the transmission and gearing you need for maximum acceleration over time. </p><p></p><p>Build your transmission ratio to land after upshift slightly before torque peak.</p><p>Set your final gear ratio to match desired speed at HP peak at point of destination. </p><p></p><p>You have to be real here, do not set this goal as what you truly desire... yes I would like to go 300 mph but the car just wont do it but 120 at the end of 1320 in a NA Mustang GT sounds just as good to me...</p><p>28'' tall tire forth gear manual 1.32:1 HP peak 6800 RPMs 3.55 gears</p><p>28'' tall tire forth gear manual 1.14:1 HP peak 6800 RPMs 4.10 gears</p><p>The main reason forth in the manual, the long throw to fifth</p><p>The main reason in an automatic being in fourth, fifths gear ratio is .87, now your rear gearing is working as a torque deduction.</p></blockquote><p></p>
[QUOTE="JohnRichard, post: 13780986, member: 156405"] all your plans 1 2 and 3 changes the torque peak location... I would suggest finishing the engine then move towards the transmission and gearing you need for maximum acceleration over time. Build your transmission ratio to land after upshift slightly before torque peak. Set your final gear ratio to match desired speed at HP peak at point of destination. You have to be real here, do not set this goal as what you truly desire... yes I would like to go 300 mph but the car just wont do it but 120 at the end of 1320 in a NA Mustang GT sounds just as good to me... 28'' tall tire forth gear manual 1.32:1 HP peak 6800 RPMs 3.55 gears 28'' tall tire forth gear manual 1.14:1 HP peak 6800 RPMs 4.10 gears The main reason forth in the manual, the long throw to fifth The main reason in an automatic being in fourth, fifths gear ratio is .87, now your rear gearing is working as a torque deduction. [/QUOTE]
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Better understanding gear ratios relation to horsepower
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