notheredave Posted September 27, 2011 Share Posted September 27, 2011 I have been playing around with some online calculators and I have three types of rims/tires and three VLSD's. Stock motor in my 240z: 11.78 sec. 1/4 mile Top Speed 156 mph @ 290 hp (old 151 hp 2400 lbs. @ 125 mph) 1/4 mile based power to wt.: http://robrobinette.com/et.htm 11.78 sec. 1/4 mile (2400 lbs. and 290 hp) 10.58 sec. 1/4 mile (2400 lbs. and 400 hp) 09.00 sec. 1/4 mile (2400 lbs. and 650 hp) Needed HP for Top Speed: http://robrobinette.com/top_speed.htm 156 mph @ 290 hp 180 mph @ 400 hp 203 mph @ 650 hp top speed based on gears: (if you have the hp) http://www.catherineandken.co.uk/sti/tyres.html Gear RatiosTR-3650 used in the 2001-2004 Ford Mustang GT 1st: 3.380:1 2nd: 2.000:1 3rd: 1.320:1 4th: 1.000:1 5th: 0.670:1 (used on 01-04 with 3.27:1 final drive) 190 mph 4.09:1 191 mph 3.90:1 201 mph 3.70:1 Quote Link to comment Share on other sites More sharing options...
yellowoctupus Posted September 30, 2011 Share Posted September 30, 2011 (edited) Took me a minute or two, but I knew there was a pile of old 1/4 mi times out there somewhere with stock Z's: http://zhome.com/History/zcarperf.html Just as a check to your calculated times. Edited September 30, 2011 by yellowoctupus Quote Link to comment Share on other sites More sharing options...
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