falling on its face after the 1/8th

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Old Oct 10, 2007 | 02:41 AM
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Default falling on its face after the 1/8th

Is it just me or should the car be picking up a little more up top? Pass was in a da of around 2400, car has a 3000k stall, lt's, true duals, coolant bypass, mti lid, k&n filter, smooth bellows, 160 degree thermostat, shift kit, b&m 24k cooler, and eibach prokit for all mods
60'...........1.93
330..........5.508
1/8...........8.406
mph..........85.297
1000..........10.850
1/4............13.053
mph...........105.840

car dynoed 317/335. From the 1/8th to 1/4 car picked up 20.543mph.
Car was full wieght with a full tank of gas for the run

i know my old mustang gt put down 298/312 and would pick up about 22.5-22.9 from the 1/8th to 1/4 but car was just shy of 3300 with me in it

have to check my documents to see when/if the fuel filters been changed...car has 19k miles on it
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Old Oct 10, 2007 | 03:18 AM
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It looks about right to me.
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Old Oct 10, 2007 | 01:03 PM
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The numbers say you have the power to do better. 1/8 mile mph looks low and as you discovered you're only gaining 20 mph in the back half. Tires too tall wrong gear.
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Old Oct 10, 2007 | 06:20 PM
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What gear are you running?
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Old Oct 10, 2007 | 10:44 PM
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gearing is stock 3.23's. Also realized the da is wrong da was 2868 not sure if that really would make a huge difference. 1/8 mile mph could be low cuase as i stated i had to ease into the throttle due to no prep
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Old Oct 11, 2007 | 01:14 PM
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For a basically stock car (gears, converter, cam, wight), that sounds about right. I posted a similar thread about my times. My 1/8th mph was 93.03 and my 1/4 times are in my sig.

Its not about how many mph you pick up in the last 1/8th, its an equation relative to your 1st 1/8th trap. If my trap is 93, I multiply by 1.245 and it roughly gives me my 1/4 trap. I tried this formula out on a couple peoples #'s that run well and it seems to work out. However, this is only rough estimation and doesn't account for steep gears, very high stalls, or power adders, and especially not 6 speeds.

Last edited by gruntwork; Oct 11, 2007 at 01:23 PM.
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Old Oct 11, 2007 | 04:55 PM
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The da would make at least a tenth difference, being that you pedeled it out the hole and got a top end gear that would explain why you eighth mile was a bit slow. i would try a 3:73, that'l bring her around.
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Old Oct 11, 2007 | 05:04 PM
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Originally Posted by gruntwork
For a basically stock car (gears, converter, cam, wight), that sounds about right. I posted a similar thread about my times. My 1/8th mph was 93.03 and my 1/4 times are in my sig.

Its not about how many mph you pick up in the last 1/8th, its an equation relative to your 1st 1/8th trap. If my trap is 93, I multiply by 1.245 and it roughly gives me my 1/4 trap. I tried this formula out on a couple peoples #'s that run well and it seems to work out. However, this is only rough estimation and doesn't account for steep gears, very high stalls, or power adders, and especially not 6 speeds.
gotcha new to this auto world........btw i got my car not far from you. Bought it from a guy out in sound beach only had 15k miles on it when i bought it
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Old Oct 11, 2007 | 07:33 PM
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Originally Posted by Ruckus46Gt
gotcha new to this auto world........btw i got my car not far from you. Bought it from a guy out in sound beach only had 15k miles on it when i bought it
Sweet deal. Have fun moddin it.
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Old Oct 11, 2007 | 11:32 PM
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shift points??????

might wanna check that....my car stock picked up 22 last 1/8
now it picks up 25.....
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Old Oct 12, 2007 | 11:36 AM
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So, we're going to do the gear change if you're interested in maximum performance, right?

Once you change the gear here will be your next issue. Why are my 60' times so high?
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