starting from a roll..... what is the optimum speed???

BowTie Eater 5 Liter · 01-19-2002, 05:59 PM

please help on this one.

thank you

lx mike · 01-19-2002, 06:51 PM

i would think it would have to depend on your gear ratio and also if you have an automatic or 5 speed. the automatic will kick down but the manual you have to know what your rpm's will be and pick the right gear. you wouldn't want it to be at a speed that has your rpm's too low. with 3.73's and doing rolling starts from around 4000 rpm's works out to 25 in 1st, 45in 2nd and 65 in 3rd. go to the analyzer and put in your gear ratio and tire size and it will give you the rpms for each gear and mph from 1st to 5th. i would think that around 3500-4000 rpms would be good rpm's to do rolling starts

BowTie Eater 5 Liter · 01-19-2002, 08:10 PM

i have a t-5 and 3.08 gears, and 225/60r-15 tires

lx mike · 01-19-2002, 09:24 PM

in first 25-30 mph put you at 3500-4000 rpm's and in second 45-50 put you in same range.

Coupe5oh · 01-20-2002, 04:49 AM

I've gone to 2nd gear at 35-40mph, with 3.27gears and a t-5, same tire size, and have made many of kills, a coulple i remember another mustang, and a couple eclipses.

So when i get 3.73 i know i might miss these granma gears jusst a little.

I have dropped to 3rd at 70mph, but i think that put me too high on the tach, about 5500 rpm.

Rev · 01-20-2002, 05:37 AM

As was mentioned, you will want to start from your torque peak or right around there. For your car, probably at 3500 RPM or slightly below would be good. Pick the gear to get you at that RPM and go from there.

Rev

01-19-2002, 05:59 PM	#1
BowTie Eater 5 Liter Registered Member Join Date: Nov 2000 Location: Maple Ridge B.C. Canada, The Best Place In The World Posts: 871	starting from a roll..... what is the optimum speed??? please help on this one. thank you __________________ 1984 Bronco II, 36" Michelin Military Tires, 95 EFI 5.0, NP435 Tranny, NP208 Doubler, NP205 Transfer Case, Fill Size Solid Dana 44 Front End, WH Progressive Rate Rock Crawling Coils, Bronco 8.8 Rear, Skyjacker Softride Leafs, 5.13 Gears, Detroit Locker. Final Crawl Ratio Of 175:1 88 GT Best 60ft. 2.181 Best ET 14.350 Best MPH 98.01 ~WRECKED!!!!~

01-19-2002, 06:51 PM	#2
lx mike Undescribable Join Date: Sep 1998 Location: Ft Myers Fla Posts: 1,539	i would think it would have to depend on your gear ratio and also if you have an automatic or 5 speed. the automatic will kick down but the manual you have to know what your rpm's will be and pick the right gear. you wouldn't want it to be at a speed that has your rpm's too low. with 3.73's and doing rolling starts from around 4000 rpm's works out to 25 in 1st, 45in 2nd and 65 in 3rd. go to the analyzer and put in your gear ratio and tire size and it will give you the rpms for each gear and mph from 1st to 5th. i would think that around 3500-4000 rpms would be good rpm's to do rolling starts __________________ Rice Haters Club Member #101

01-19-2002, 08:10 PM	#3
BowTie Eater 5 Liter Registered Member Join Date: Nov 2000 Location: Maple Ridge B.C. Canada, The Best Place In The World Posts: 871	i have a t-5 and 3.08 gears, and 225/60r-15 tires __________________ 1984 Bronco II, 36" Michelin Military Tires, 95 EFI 5.0, NP435 Tranny, NP208 Doubler, NP205 Transfer Case, Fill Size Solid Dana 44 Front End, WH Progressive Rate Rock Crawling Coils, Bronco 8.8 Rear, Skyjacker Softride Leafs, 5.13 Gears, Detroit Locker. Final Crawl Ratio Of 175:1 88 GT Best 60ft. 2.181 Best ET 14.350 Best MPH 98.01 ~WRECKED!!!!~

01-19-2002, 09:24 PM	#4
lx mike Undescribable Join Date: Sep 1998 Location: Ft Myers Fla Posts: 1,539	in first 25-30 mph put you at 3500-4000 rpm's and in second 45-50 put you in same range. __________________ Rice Haters Club Member #101

01-20-2002, 04:49 AM	#5
Coupe5oh Registered Member Join Date: Nov 2001 Location: SanAntonio, Tx Posts: 734	I've gone to 2nd gear at 35-40mph, with 3.27gears and a t-5, same tire size, and have made many of kills, a coulple i remember another mustang, and a couple eclipses. So when i get 3.73 i know i might miss these granma gears jusst a little. I have dropped to 3rd at 70mph, but i think that put me too high on the tach, about 5500 rpm. __________________ Police package 5spd 90 Lx, Stock original motor, 3.27grs, BM fan, fms 10.5 clutch, D&D quadrant, and adjuster, ADS chip, 180 stat, mac cai, mac h-pipe, mac subframe connectors, ASP crank pulley, ripper shifter, 26x10.5 M/T sport pros welds. 246 hp according to analyzer Race weight: 3,120 E.t-13.57 with 26x10.50's e.t. streets. 1.88 60' mph- 99.92 mph

01-20-2002, 05:37 AM	#6
Rev Registered Member Join Date: Nov 1998 Location: Houston, Tx. Posts: 3,887	As was mentioned, you will want to start from your torque peak or right around there. For your car, probably at 3500 RPM or slightly below would be good. Pick the gear to get you at that RPM and go from there. Rev __________________ '66 Coupe, 306, 350-375 HP, C-4, 13.07 e.t., 104.8 mph, 1/4 mi. O.B.C. #2 '66 coupe

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