Quarter mile estimate? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Operatorfailure · 09-23-2013, 07:31 PM

I'm curious as to what my time will be, 68 swb stepper with a stock 5.3/4l60, cai and a tune. Street tires with 3.73 posi. Any guesses? I'll be going friday night to see for sure.
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Blue Rat · 09-23-2013, 10:18 PM

14.50 1/4 mile.

El Campo · 09-23-2013, 11:47 PM

13.99 is my guess
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Operatorfailure · 09-24-2013, 05:28 AM

I've been telling myself I will be happy with a 14.99, which I don't think should be any problem but a 13.99 would be awesome, it would put me right next to my dad in his 66. Thanks guys, I will update this Friday with what I run.

mongoose · 09-24-2013, 01:55 PM

15.70

**regan wilson** · 09-24-2013, 06:22 PM

14.20 @ 92 mph. What does the winner get?

Operatorfailure · 09-24-2013, 06:38 PM

Hmmm.... I guess the knowledge that you're the best guesser, lol. Btw Regan, your story of your truck is very entertaining, keep up the good work!
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**Hart_Rod** · 09-25-2013, 04:23 PM

14.5 @ 87 mph

C10-Rat · 09-25-2013, 11:16 PM

15.40's

Super73 · 09-26-2013, 12:17 AM

It has a tune? What did it make on the dyno, might be easier for us to guess.
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Operatorfailure · 09-26-2013, 05:26 AM

I am tuning it myself with hptuners. There is talk of a dyno day here locally, if they do that I will find out what it puts to the ground but as of now I don't know.

Custom 68 · 09-26-2013, 10:35 AM

I think Hartrod is close... I have ran that track with the same setup... A cam and some nitrous and you will be in the low 13s and over 100 at least I was. I have ran out there several different setups so I may have forgotten one and didnt keep very good logs.
I wont make it out this weekend because of the street machine nationals but lets hook up out there some time.

Operatorfailure · 09-26-2013, 12:03 PM

14.5 I will be happy with for sure, I'm guessing a little slower. I will be at the street machine nationals for sure, and definitely want to check out your truck. I want to go turbo next summer so checking out your setup would help a ton.
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Super73 · 09-26-2013, 12:46 PM

Are you using a wideband for your AFR? If so, what is your current AFR?
Where do you have timing set right now?

Stock doesn't really care for more than 25ish degrees of timing. But make sure all your timing modifiers are adjusted as the stock tune has timing pulled for air temp, coolant temp, etc..

I would also suggest you log all your KR points. This might help you find a little more ET/mph at the track.
Burst KR
Torque management KR
Actual KR

I think a well dialed in stock 5.3 with stock verter could go low 14's hooked at 3,800lbs.
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Operatorfailure · 09-26-2013, 01:07 PM

Yes I am using my wideband, WOT is 12.8ish. Timing I am not sure about, somewhere in the 25-27 range, I would have to check. I know I am logging burst KR and I will check on the others. Thanks for the input!
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Operatorfailure · 09-26-2013, 05:41 PM

Quote:

Originally Posted by Super73

I would also suggest you log all your KR points. This might help you find a little more ET/mph at the track.
Burst KR
Torque management KR
Actual KR

How do I go about logging these in hptuners? I can't seem to find TM KR, I have found Burst KR, and regular KR.

Super73 · 09-26-2013, 08:17 PM

KR and Burst KR are under Engine>Retard

You will find both Ignition timing advance (total timing) and Torque management advance under Engine>Advance.

Operatorfailure · 09-26-2013, 08:49 PM

Thanks!
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softballnrd27 · 09-26-2013, 09:12 PM

85 SWB with 5.3, small cam, th350 and 2.xx gears ran 14.8 @97 on street tires. Gearing was killing me

Operatorfailure · 09-28-2013, 08:58 AM

I ran it first with a bone stock tune except the VE and MAF tables dialed in for my AFR. I ran a 16.3855 @ 80.20, then I put in the tune I had been working on and ran a 15.6782 @ 83.75. I think I found a leak in my intake manifold that I am going to try and seal up, and if that isn't it I will do a leak down test because there is no reason I shouldn't be at least low 15's IMO. I was spinning off the line, but not much at all. I did pick up .700 and 3.55 mph with the tuning so that at least made me feel a little better.

Oh, and I couldn't get it to run the timing I was commanding. It would bounce from 20-22 total advance with no KR, no matter what my timing cells were set at.

Here is a pic of the time slip, I am on the right.

mongoose · 09-28-2013, 04:06 PM

.02 off.... so close!

Operatorfailure · 09-28-2013, 05:44 PM

Yeah, Mongoose wins for sure, lol.
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Super73 · 09-29-2013, 07:35 PM

If you want to e-mail me your tune, I would be happy to try and help you find the issue with your timing.

Also, if you have any logs and your .cfg file as well.

Shaunliddy@hotmail.com
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Operatorfailure · 09-29-2013, 07:40 PM

Thanks, I'm on my phone so I cant email you the files but I will later. I'm pretty sure I found my timing issue, I was running 110-122 degrees IAT so it was pulling timing because of that.
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70shortwide · 09-30-2013, 09:23 AM

If you get that 60' down you will be in the 14's

09-23-2013, 07:31 PM	#1
Operatorfailure Registered User Join Date: Apr 2011 Location: Springfield, MO Posts: 172	Quarter mile estimate? I'm curious as to what my time will be, 68 swb stepper with a stock 5.3/4l60, cai and a tune. Street tires with 3.73 posi. Any guesses? I'll be going friday night to see for sure. Posted via Mobile Device

09-23-2013, 10:18 PM	#2
Blue Rat Registered User Join Date: Dec 2010 Location: Arkansas Posts: 608	Re: Quarter mile estimate? 14.50 1/4 mile.

09-23-2013, 11:47 PM	#3
El Campo Registered User Join Date: Jul 2011 Location: El Campo, Tx Posts: 1,246	Re: Quarter mile estimate? 13.99 is my guess Posted via Mobile Device __________________ 72 Chevy blue LWB, 99% original Oklahoma truck, 28,000 miles 72 Chevy SWB: http://67-72chevytrucks.com/vboard/s...d.php?t=486626 (Attempt/Mistake #2) 2003 Harley Davidson Dyna Superglide with 2007 Street Bob front end 2000 Ford F350 Powerstroke 4WD CCLB, 310,000 miles running great (STOLEN St. Patricks Day 2014 AND NEVER RECOVERED) 2002 Ford F250 Powerstroke 4WD CCLB (To replace stolen one) Hook em Horns!!!

09-24-2013, 05:28 AM	#4
Operatorfailure Registered User Join Date: Apr 2011 Location: Springfield, MO Posts: 172	Re: Quarter mile estimate? I've been telling myself I will be happy with a 14.99, which I don't think should be any problem but a 13.99 would be awesome, it would put me right next to my dad in his 66. Thanks guys, I will update this Friday with what I run.

09-24-2013, 01:55 PM	#5
mongoose Registered User Join Date: Feb 2009 Location: slurrey, bc. Posts: 1,134	Re: Quarter mile estimate? 15.70 __________________ -'73 c/10 - Low with Go - will be complete... probably never. -'90 2wd Blazer - well... soon enough anyways. -'84 SWB - the daily gas guzzler.

09-24-2013, 06:22 PM	#6
regan wilson Senior Member Join Date: Mar 2008 Location: tyler texas Posts: 1,536	Re: Quarter mile estimate? 14.20 @ 92 mph. What does the winner get? __________________ NHRA Super Street 469C It only runs 10.90 at 156 mph

09-24-2013, 06:38 PM	#7
Operatorfailure Registered User Join Date: Apr 2011 Location: Springfield, MO Posts: 172	Re: Quarter mile estimate? Hmmm.... I guess the knowledge that you're the best guesser, lol. Btw Regan, your story of your truck is very entertaining, keep up the good work! Posted via Mobile Device

09-25-2013, 04:23 PM	#8
Hart_Rod ************* Join Date: Apr 2005 Location: Pensacola, FL Posts: 17,835	Re: Quarter mile estimate? 14.5 @ 87 mph __________________ Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3

09-25-2013, 11:16 PM	#9
C10-Rat Registered User Join Date: Apr 2013 Location: Crosby, Tx Posts: 26	Re: Quarter mile estimate? 15.40's __________________ 1970 CHEVY SWB 454BBC TH350

09-26-2013, 12:17 AM	#10
Super73 Registered User Join Date: Nov 2007 Location: Bay Area, Ca Posts: 2,841	Re: Quarter mile estimate? It has a tune? What did it make on the dyno, might be easier for us to guess. Posted via Mobile Device __________________ ------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49

09-26-2013, 05:26 AM	#11
Operatorfailure Registered User Join Date: Apr 2011 Location: Springfield, MO Posts: 172	Re: Quarter mile estimate? I am tuning it myself with hptuners. There is talk of a dyno day here locally, if they do that I will find out what it puts to the ground but as of now I don't know.

09-26-2013, 10:35 AM	#12
Custom 68 Registered User Join Date: Nov 2001 Location: Springfield, MO Posts: 2,928	Re: Quarter mile estimate? I think Hartrod is close... I have ran that track with the same setup... A cam and some nitrous and you will be in the low 13s and over 100 at least I was. I have ran out there several different setups so I may have forgotten one and didnt keep very good logs. I wont make it out this weekend because of the street machine nationals but lets hook up out there some time. __________________ Dave 1968 Custom Chevy with turbo charged 5.3 gen III 4l80e swap 1967-71 GMC 3/4 ton long step 4x4 (not sure what year exactly?) "A good friend will bail you out of jail...but a true friend will be sitting next to you saying "that was frekin awesome". "If it doesn't fit force it...If it breaks then it needed to be replaced anyway!"

09-26-2013, 12:03 PM	#13
Operatorfailure Registered User Join Date: Apr 2011 Location: Springfield, MO Posts: 172	Re: Quarter mile estimate? 14.5 I will be happy with for sure, I'm guessing a little slower. I will be at the street machine nationals for sure, and definitely want to check out your truck. I want to go turbo next summer so checking out your setup would help a ton. Posted via Mobile Device

09-26-2013, 12:46 PM	#14
Super73 Registered User Join Date: Nov 2007 Location: Bay Area, Ca Posts: 2,841	Re: Quarter mile estimate? Are you using a wideband for your AFR? If so, what is your current AFR? Where do you have timing set right now? Stock doesn't really care for more than 25ish degrees of timing. But make sure all your timing modifiers are adjusted as the stock tune has timing pulled for air temp, coolant temp, etc.. I would also suggest you log all your KR points. This might help you find a little more ET/mph at the track. Burst KR Torque management KR Actual KR I think a well dialed in stock 5.3 with stock verter could go low 14's hooked at 3,800lbs. Posted via Mobile Device __________________ ------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49

09-26-2013, 01:07 PM	#15
Operatorfailure Registered User Join Date: Apr 2011 Location: Springfield, MO Posts: 172	Re: Quarter mile estimate? Yes I am using my wideband, WOT is 12.8ish. Timing I am not sure about, somewhere in the 25-27 range, I would have to check. I know I am logging burst KR and I will check on the others. Thanks for the input! Posted via Mobile Device



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09-26-2013, 08:17 PM	#17
Super73 Registered User Join Date: Nov 2007 Location: Bay Area, Ca Posts: 2,841	Re: Quarter mile estimate? KR and Burst KR are under Engine>Retard You will find both Ignition timing advance (total timing) and Torque management advance under Engine>Advance. __________________ ------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49

09-26-2013, 08:49 PM	#18
Operatorfailure Registered User Join Date: Apr 2011 Location: Springfield, MO Posts: 172	Re: Quarter mile estimate? Thanks! Posted via Mobile Device

09-26-2013, 09:12 PM	#19
softballnrd27 Always a work in progress Join Date: Jun 2007 Location: Harker Heights, TX Posts: 1,599	Re: Quarter mile estimate? 85 SWB with 5.3, small cam, th350 and 2.xx gears ran 14.8 @97 on street tires. Gearing was killing me __________________ USMC Retired Never trust a man who can't laugh at his own fart! 2010 Silverado Crew Cab 73 SWB 5.3/4l80e Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=695168

09-28-2013, 08:58 AM	#20
Operatorfailure Registered User Join Date: Apr 2011 Location: Springfield, MO Posts: 172	Re: Quarter mile estimate? I ran it first with a bone stock tune except the VE and MAF tables dialed in for my AFR. I ran a 16.3855 @ 80.20, then I put in the tune I had been working on and ran a 15.6782 @ 83.75. I think I found a leak in my intake manifold that I am going to try and seal up, and if that isn't it I will do a leak down test because there is no reason I shouldn't be at least low 15's IMO. I was spinning off the line, but not much at all. I did pick up .700 and 3.55 mph with the tuning so that at least made me feel a little better. Oh, and I couldn't get it to run the timing I was commanding. It would bounce from 20-22 total advance with no KR, no matter what my timing cells were set at. Here is a pic of the time slip, I am on the right.

09-28-2013, 04:06 PM	#21
mongoose Registered User Join Date: Feb 2009 Location: slurrey, bc. Posts: 1,134	Re: Quarter mile estimate? .02 off.... so close! __________________ -'73 c/10 - Low with Go - will be complete... probably never. -'90 2wd Blazer - well... soon enough anyways. -'84 SWB - the daily gas guzzler.

09-28-2013, 05:44 PM	#22
Operatorfailure Registered User Join Date: Apr 2011 Location: Springfield, MO Posts: 172	Re: Quarter mile estimate? Yeah, Mongoose wins for sure, lol. Posted via Mobile Device

09-29-2013, 07:35 PM	#23
Super73 Registered User Join Date: Nov 2007 Location: Bay Area, Ca Posts: 2,841	Re: Quarter mile estimate? If you want to e-mail me your tune, I would be happy to try and help you find the issue with your timing. Also, if you have any logs and your .cfg file as well. Shaunliddy@hotmail.com Posted via Mobile Device __________________ ------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49

09-29-2013, 07:40 PM	#24
Operatorfailure Registered User Join Date: Apr 2011 Location: Springfield, MO Posts: 172	Re: Quarter mile estimate? Thanks, I'm on my phone so I cant email you the files but I will later. I'm pretty sure I found my timing issue, I was running 110-122 degrees IAT so it was pulling timing because of that. Posted via Mobile Device

09-30-2013, 09:23 AM	#25
70shortwide Registered User Join Date: Jan 2010 Location: coweta, ok Posts: 86	Re: Quarter mile estimate? If you get that 60' down you will be in the 14's

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