Quote:
Originally Posted by ZDan
Gearing change isn't going to do a whole lot for you overall. Should improve 0-xx acceleration by a tenth or two, but from a roll at speed, it's totally dependent on starting speed. From some speeds you'll have to be in the next taller transmission gear, so you'll accelerate slower. At some tracks, "better" (numerically higher) gearing will help, but at others it will hurt. Very much course-dependent. Long/short: gearing doesn't magic you better power/weight... Also, changing diff gearing won't close the gaps in the AT's ratios, which are wider vs. MT. RPM drops will remain the same whatever you do with final drive gearing. You're still going to lose more rpm between shifts vs. MT, and hence fall a little further down the power curve.
Weight reduction: Lose 100 lb. and you'll be about a tenth quicker and 1mph faster in the 1/4-mile. That's good, but for sure if you delete rear seats and trunk junk, you'll notice the noise difference way more than any actual acceleration improvement.
Aero drag, 10% drag reduction will gain you about 0.5mph in the 1/4, something, yeah, but not a lot...
Unfortunately there's no easy way to meaningfully improve acceleration performance with most NA cars, this one in particular...
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My diy rear seat delete is significantly less noise then stock seat/trunk junk. Rear seat -32lbs then I put 8lbs of sound insulation/cardboard/chloroplast/carpet back in.
And yes drag reduction won’t make a huge difference in 0-60 and the 1/4th when trap speeds are around 90mph as aero doesn’t make a noticeable difference until about 60mph and a substantial difference until about 100mph. Aero is Great for better mpg, Hwy pulls, and faster tracks. Also most of
The drag reduction for this car also adds downforce.
When I was NA I went from 7.8sec 0-60 and 16.5sec 1/4 to 6.6sec 0-60 and 14.8sec 1/4 with a full tank of 92. Still relatively slow. But substantially faster then stock.
But 0-60 and 1/4 is a horrible way to measure auto 86s acceleration. When almost no one cares about stop light/off the line speed. Think 60-120 is a better comparison for real world applications.