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07-28-2014, 04:56 PM
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#1 |
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Registered User
Join Date: Jun 2011
Location: Douglassville PA
Posts: 82
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1/4 mile
Finally got the truck to the track and quickest pass was a 12.7 at 107 mph with a 2.003 60 ft. Trying to get it down to 12.5 or under any ideas would help. I am running a 295/65/15 mickey Thompson drag radian with 15 psi in them.
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07-28-2014, 05:05 PM
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#2 |
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Registered User
Join Date: Apr 2003
Location: missouri city, tx
Posts: 4,486
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Re: 1/4 mile
What do you have for rear gears and a converter? Looks like theirs an easy 2 tenths to be had in the 60 foot. What is the engine setup?
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70 longbed 496/th400/Ford 9" |
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07-28-2014, 05:07 PM
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#3 |
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Registered User
Join Date: Jun 2011
Location: Douglassville PA
Posts: 82
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Re: 1/4 mile
its a 400 sbc with weiand 177 6 psi boost 3.73 gears turbo 350 trans and tci 3500 converter
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07-29-2014, 01:57 AM
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#4 |
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At the body shop.
Join Date: Aug 2009
Location: Land of fruits and nuts.
Posts: 5,256
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Re: 1/4 mile
Cal tracs for leaf springs.
If its truck arm read up on super 73's post's
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" That didnt make it any newer " " Dont antique the equipment " |
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07-29-2014, 05:00 AM
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#5 |
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mini truck racer
Join Date: Aug 2006
Location: Baytown , texas
Posts: 3,010
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Re: 1/4 mile
Every tenth in 60'= about 2/10's down track .
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1949 5-window 1969 Camaro 1976 Chevy Luv yellow 1978 Chevy Luv Blue 1976 Chevy Luv Black 1979 Firebird Flooded in Harvey 1999 F350 Dually 2005 GMC Sierra 4.8 RCSB 2014 Explorer (wifes) My build :http://67-72chevytrucks.com/vboard/s...d.php?t=399148 Build #2: http://67-72chevytrucks.com/vboard/s...d.php?t=653583 |
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07-29-2014, 10:44 AM
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#6 |
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Registered User
Join Date: Nov 2007
Location: Bay Area, Ca
Posts: 2,841
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Re: 1/4 mile
What year truck?
What has been done to the suspension? (Shocks/springs) How are you doing your burn out? How long and are you rolling out of it?
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------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 |
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07-29-2014, 11:47 AM
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#7 |
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Registered User
Join Date: Jun 2011
Location: Douglassville PA
Posts: 82
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Re: 1/4 mile
its a 71 longbed stock shocks and lowering springs, not doing a huge burnout but am rolling out
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07-29-2014, 02:34 PM
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#8 |
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Registered User
Join Date: Nov 2007
Location: Bay Area, Ca
Posts: 2,841
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Re: 1/4 mile
Assuming it is a trailing arm and not leaf?
Front lowering sporting is not helping transfer weight to the rear. Too short/stiff. How long of a burn out, 5 sec then rolling out?
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------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 |
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07-29-2014, 04:38 PM
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#9 |
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Registered User
Join Date: Jun 2011
Location: Douglassville PA
Posts: 82
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Re: 1/4 mile
it is a coil spring rear, and probly about 5 sec burnout
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07-29-2014, 06:21 PM
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#10 |
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Registered User
Join Date: Jun 2004
Location: Saskatchewan, Canada
Posts: 1,368
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Re: 1/4 mile
Is it even spinning, or just a dog out of the hole?
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Speed is just a matter of money, question is how fast can you afford to go? 8.95@148.97mph all motor haven't tried bottle yet Sponsored by: Getz Oilfield Consulting Hard Candy Customs |
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07-29-2014, 09:24 PM
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#11 |
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Registered User
Join Date: Jun 2011
Location: Douglassville PA
Posts: 82
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Re: 1/4 mile
Spins a little then hooks up
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07-29-2014, 09:36 PM
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#12 |
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Registered User
Join Date: Nov 2007
Location: Bay Area, Ca
Posts: 2,841
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Re: 1/4 mile
Sounds like you need a different front spring to start. Do toy know what it weighs? Front and rear axle weights would be most helpful.
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------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 |
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07-29-2014, 09:36 PM
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#13 |
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Registered User
Join Date: Jun 2004
Location: Saskatchewan, Canada
Posts: 1,368
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Re: 1/4 mile
I'd try a set of pure slicks and try to bring up your launch RPM a bit so you are into a bit of boost.
__________________
Speed is just a matter of money, question is how fast can you afford to go? 8.95@148.97mph all motor haven't tried bottle yet Sponsored by: Getz Oilfield Consulting Hard Candy Customs |
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07-29-2014, 09:48 PM
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#14 |
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Registered User
Join Date: Jun 2011
Location: Douglassville PA
Posts: 82
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Re: 1/4 mile
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07-29-2014, 11:35 PM
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#15 |
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Registered User
Join Date: Nov 2007
Location: Bay Area, Ca
Posts: 2,841
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Re: 1/4 mile
A 177 being a smaller roots blower should be building boost pretty fast. I would assume at 3500 rpm it is doing good making torque.
A slick might help, but you still run the issue of not transferring weight to the rear. I used to have lowering springs and I don't now. Your radial is not much smaller than mine, they work just fine if you can tune the suspension which you can't right now.
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------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 |
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07-29-2014, 11:40 PM
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#16 |
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Registered User
Join Date: Nov 2007
Location: Bay Area, Ca
Posts: 2,841
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Re: 1/4 mile
Just watched the video.
What gear are you doing your burn out? It is hard to see in the video but it sure looks like it leaves flat and doesn't transfer. I watched the video a few times.
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------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 |
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07-30-2014, 07:38 AM
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#17 |
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Registered User
Join Date: Jun 2011
Location: Douglassville PA
Posts: 82
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Re: 1/4 mile
1st gear burnout and it does leave flat
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07-30-2014, 01:00 PM
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#18 |
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Registered User
Join Date: Nov 2007
Location: Bay Area, Ca
Posts: 2,841
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Re: 1/4 mile
You need to get more heat in that tire. 1st gear burn outs will not spin it fast enough. Get it in high gear with 5k rpm add quick as you can. That alone well help the reaction issue, might not take it away completely.
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------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 |
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07-30-2014, 01:23 PM
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#19 |
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Registered User
Join Date: Jun 2011
Location: Douglassville PA
Posts: 82
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Re: 1/4 mile
I'm heading back again friday I'll heat them up more and see what happens
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08-02-2014, 10:43 AM
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#20 |
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Registered User
Join Date: Nov 2007
Location: Bay Area, Ca
Posts: 2,841
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Re: 1/4 mile
Did you make it back to the track last night like you were thinking?
__________________
------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 |
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08-03-2014, 09:24 PM
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#21 |
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Registered User
Join Date: Jun 2011
Location: Douglassville PA
Posts: 82
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Re: 1/4 mile
No got rained out
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08-03-2014, 11:19 PM
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#22 |
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Registered User
Join Date: Nov 2007
Location: Bay Area, Ca
Posts: 2,841
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Re: 1/4 mile
Bummer.. was hoping to see a new best.
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------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 |
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