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How much MPH does your car pick-up from 1/8 to the 1/4?

Posted By: StripeHOG

How much MPH does your car pick-up from 1/8 to the 1/4? - 03/26/10 07:58 AM

21 mph Gain

I know my car is out of steam past the 1/8 96mph 1/8 and 117mph 1/4 my car has 4.30 gears, 28x11.5 tire, and a 9" converter that flashes at 4500
Posted By: WILD BILL

Re: How much MPH does your car pick-up from 1/8 to the 1/4? - 03/26/10 08:05 AM

That's roughly the same as my car used to do with the old motor.

Never thought it was anything but normal.

I see you can't sleep either
Posted By: MR_P_BODY

Re: How much MPH does your car pick-up from 1/8 to the 1/4? - 03/26/10 08:48 AM

I hit the 1/8 at 118 and hit the 1/4 at 148 normally
difference of 30 mph
Posted By: MR_P_BODY

Re: How much MPH does your car pick-up from 1/8 to the 1/4? - 03/26/10 09:29 AM

You can use this calculator and check it
www.wallaceracing.com/eigth-mph-from-quarter.php
Posted By: MR_P_BODY

Re: How much MPH does your car pick-up from 1/8 to the 1/4? - 03/26/10 11:33 AM

I was just playing with the calc and it looks like
a fairly linear line for a increase in speed between
the 2 points....

1/4 speed... 1/8 speed... difference

100......... 79........... 21
110......... 86........... 24
120......... 94........... 26
130......... 102.......... 28
140......... 110.......... 30
150......... 118.......... 32
Posted By: Bigcube

Re: How much MPH does your car pick-up from 1/8 to the 1/4? - 03/26/10 11:41 AM

Mine is in my sig
Posted By: Irun5snd8th

Re: How much MPH does your car pick-up from 1/8 to the 1/4? - 03/26/10 12:07 PM

Mine is about 25 but mine is a turd upstairs
Posted By: S/ST 3040

Re: How much MPH does your car pick-up from 1/8 to the 1/4? - 03/26/10 12:11 PM

Best of 100.8 MPH in the 1/8 and 124.73 MPH for me.
Posted By: Duner

Re: How much MPH does your car pick-up from 1/8 to the - 03/26/10 01:09 PM

26-27 for the street truck.
Posted By: Tig

Re: How much MPH does your car pick-up from 1/8 to the - 03/26/10 01:17 PM

29 mph best here. Wallace says it should be 31. Normally around 28mph.
Posted By: BobR

Re: How much MPH does your car pick-up from 1/8 to the - 03/26/10 01:24 PM

50 mph.
Posted By: Sport440

Re: How much MPH does your car pick-up from 1/8 to the - 03/26/10 01:57 PM

28 MPH here almost exactly like MPodys calcultions state. mike
Posted By: Duner

Re: How much MPH does your car pick-up from 1/8 to the - 03/26/10 02:42 PM

That just means you are leaving too hard!

Continue adding air in your rear tires until your performance stats match the provided table.
Posted By: Dap

Re: How much MPH does your car pick-up from 1/8 to the - 03/26/10 03:17 PM

Usually 26mph
Posted By: Cab_Burge

Re: How much MPH does your car pick-up from 1/8 to the - 03/26/10 03:18 PM

100 MPH to 101 in the 1/8 and 128.+ in the 1/4
Posted By: Thumperdart

Re: How much MPH does your car pick-up from 1/8 to the 1/4? - 03/26/10 04:52 PM

A little over 25 mph for me.
Posted By: Sport440

Re: How much MPH does your car pick-up from 1/8 to the 1/4? - 03/26/10 05:42 PM

Quote:

I was just playing with the calc and it looks like
a fairly linear line for a increase in speed between
the 2 points....

1/4 speed... 1/8 speed... difference

100......... 79........... 21
110......... 86........... 24
120......... 94........... 26
130......... 102.......... 28
140......... 110.......... 30
150......... 118.......... 32





Mike is there an error @ 110 mph That 34 MPH jump dont jive mike


EDIT, Mike, I see its just a math error. Should be 23.43 Gain not 36. mike
Posted By: MR_P_BODY

Re: How much MPH does your car pick-up from 1/8 to the 1/4? - 03/26/10 05:46 PM

Quote:

Quote:

I was just playing with the calc and it looks like
a fairly linear line for a increase in speed between
the 2 points....

1/4 speed... 1/8 speed... difference

100......... 79........... 21
110......... 86........... 24
120......... 94........... 26
130......... 102.......... 28
140......... 110.......... 30
150......... 118.......... 32





Mike is there an error @ 110 mph That 34 MPH jump dont jive mike



Yes.... its called a typo ... I'll go back and fix it
thanks for the catch... thats what ya get at that
hour of the morning
Posted By: 440Jim

Re: How much MPH does your car pick-up from 1/8 to the 1/4? - 03/26/10 06:29 PM

Quote:

You can use this calculator and check it
www.wallaceracing.com/eigth-mph-from-quarter.php


My car doesn't have lots of mph (1/8 or 1/4), but it pulls good ET. 116 to 142 = 26 mph

From that link:
Your 1/8th mile MPH computed from your vehicle's 1/4 Mile MPH of 142 is 111.75 MPH in the 1/8th mile

Lots of variation in members numbers, see attached chart.

Attached picture 5888697-mph.JPG
Posted By: Barnstorm

Re: How much MPH does your car pick-up from 1/8 to the 1/4? - 03/26/10 07:50 PM

I've run 115.68 in the 1/8 but 140 in the 1/4. Wind resistance I know is a factor..there isn't a bigger barn door than a 64 car!

Attached picture 5888870-mopar_resize.jpg
Posted By: 340_Dart

Re: How much MPH does your car pick-up from 1/8 to the 1/4? - 03/26/10 08:36 PM

Barnstorm has a very good point, the MPH change is probably relative to the aerodynamics of the car...
Posted By: BradH

Re: How much MPH does your car pick-up from 1/8 to the 1/4? - 03/26/10 10:10 PM

From 101-102 in the 1/8th to 125-126 in the 1/4... figure a 24+ MPH delta.
Posted By: Anonymous

Post deleted by Defbob - 03/26/10 10:17 PM

Posted By: MegaDart

Re: How much MPH does your car pick-up from 1/8 to the 1/4? - 03/26/10 11:40 PM

Quote:

Barnstorm has a very good point, the MPH change is probably relative to the aerodynamics of the car..



one would think frontal area would play a big role?? and now that I look at it I guess it does.

69 Dart aerodynamic as a brick 132mph to 163mph = 31mph gain

4link dragster 149mph to 182mph = 33mph gain

2002 Firebird 140mph to 177mph = 37mph gain

guess I should edit my last post!
Posted By: MikeCompTA 57

Re: How much MPH does your car pick-up from 1/8 to the 1/4? - 03/27/10 12:03 AM

27 mph for the Charger
28 mph for the Trans Am
Posted By: rebel

Re: How much MPH does your car pick-up from 1/8 to the 1/4? - 03/27/10 12:14 AM

113mph @ the 1/8th 139mph @ the 1/4. i'm guessing my carb is probably too small.
Posted By: blownzoom440

Re: How much MPH does your car pick-up from 1/8 to the 1/4? - 03/27/10 12:19 AM

i spun in the 60' but went 106 1/8 and 134 1/4 1.44 60'
Posted By: Barnstorm

Re: How much MPH does your car pick-up from 1/8 to the 1/4? - 03/27/10 12:42 AM

I've made a pass in hi gear[haven't we all] and recall the 1/8 and 1/4 mph were similar to a normal run...just takes longer.
Posted By: 383man

Re: How much MPH does your car pick-up from 1/8 to the 1/4? - 03/27/10 02:12 AM

93 in the 1/8 and 116 in the 1/4. Thats about 23 mph. Ron
Posted By: Stroker Scamp

Re: How much MPH does your car pick-up from 1/8 to the 1/4? - 03/27/10 02:50 AM

im at 105 in the 1/8th and 130 at the stripe so 25 mph

Attached picture 5889721-scampleap940x620.jpg
Posted By: Triple Threat

Re: How much MPH does your car pick-up from 1/8 to the 1/4? - 03/27/10 02:55 AM

86, and 107. 21mph, my car is all done after the 1/8th.
Posted By: '72CudaRacer

Re: How much MPH does your car pick-up from 1/8 to the 1/4? - 03/27/10 03:20 AM

Mine 99 mph 1/8; 122 1/4. About right, I guess. Slow, but , about right.
Brian

Attached picture 5889813-drags5-30206w.jpg
Posted By: gregsdart

Re: How much MPH does your car pick-up from 1/8 to the 1/4? - 03/27/10 03:38 AM

124 to 152
Posted By: Anonymous

Post deleted by Defbob - 03/27/10 04:20 AM

Posted By: DconD100

Re: How much MPH does your car pick-up from 1/8 to the 1/4? - 03/27/10 05:24 AM

94 and 116 in the truck...22mph
82 and 102 in the minivan...20mph

both are reasonably aerodynamically challenged.
Posted By: moparniac

Re: How much MPH does your car pick-up from 1/8 to the 1/4? - 03/27/10 11:58 AM

I picked up 28 in my old ride.......
Posted By: Tig

Re: How much MPH does your car pick-up from 1/8 to the - 03/27/10 12:41 PM

Quote:

That just means you are leaving too hard!

Continue adding air in your rear tires until your performance stats match the provided table.



Posted By: Hurst390

Re: How much MPH does your car pick-up from 1/8 to the - 03/28/10 01:16 PM

116+ 1/8 and 145+ 1/4....4 speed car
Posted By: Lil Demon

Re: How much MPH does your car pick-up from 1/8 to the - 03/29/10 03:09 PM

116 1/8th - 148 1/4 = 32mph
Posted By: jb15

Re: How much MPH does your car pick-up from 1/8 to the - 03/29/10 05:03 PM

1/8th-118mph,1/4-145mph
Posted By: dustergirl340

Re: How much MPH does your car pick-up from 1/8 to the - 03/29/10 05:27 PM

84 in the 1/8th
104 in the 1/4

20mph difference exactly, yeah it's slow
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