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Author
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Topic: Timeslips from track. tell me what you think.
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BaLleRz68
Gearhead Posts: 104
From: Bay Area, CA
Registered: Aug 2002
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posted 01-08-2003 03:27 AM
   
1st Run:
R/T - .898
60' - 2.657
1/8 ET - 12.159
1/4 ET - 19.423
MPH - 65.82
I just floored it off the line. For some reason I was already in 3rd gear before I was halfway down the track.2nd Run:
R/T - 1.062
60' - 2.608
1/8 - 11.456
1/4 ET - 18.097
MPH 73.07
Lost to a Dodge Ram Diesel Duallie.I started in "1" and shifted manually. I didnt know what RPM I was shifting because I don't have a tachometer yet. 3rd Run:
R/T - 1.124
60' - 2.554
1/8 - 10.961
1/4 ET - 17.118
MPH - 78.24
Started in "1" again, waited longer to shift. 4th Run
R/T - .773
60' - 2.532
1/8 - 10.767
1/4 ET - 16.906
MPH - 78.26
Same as above but waited a lot longer to shift. While in the pits I looked at my carb and noticed that the butterflies were not opening all the way at wide open throttle. What could be the problem? How come I was already in the third gear before halfway down the track on my first run? What ET can I expect? Am I capable of low 16's high 15's? Any thoughts are appreciated. Thanks.
67 c-code 289 rebuilt to stock
bored .030
only mod is long tube headers with 2.25 intermediate and 2.5" tailpipes and flowmaster 2-chamber mufflers
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Fastymz
Moderator Posts: 12673
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 01-08-2003 03:36 AM
What tire and rear gears do you run.Were you getting alot of slipping off the line.What trans do you have?
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SCOOP
oddly obsessed with big scoops on little Mustangs 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede. https://mustangsandmore.com/ubb/Fastymz.html
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BaLleRz68
Gearhead Posts: 104
From: Bay Area, CA
Registered: Aug 2002
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posted 01-08-2003 03:43 AM
stock 8 inch rear end with 2.79
stock 14x5.5 rims
C4 tranny
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Fastymz
Moderator Posts: 12673
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 01-08-2003 04:28 AM
I think you should get into the low 16's.
Do you have tach,and where you getting any traction or doing alot of spinning off the line.------------------
SCOOP
oddly obsessed with big scoops on little Mustangs 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede. https://mustangsandmore.com/ubb/Fastymz.html
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steve'66
Gearhead Posts: 6768
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 01-08-2003 01:50 PM
BaLleRz,Scoop knows how to help you out and he's doing a fine job.  Did you run at Infineon? When did you run it? SteveW
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steve'66
Gearhead Posts: 6768
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 01-08-2003 01:58 PM
On your reaction times, deep stage it and leave the instant you see the last yellow bulb light. Otherwise guys like Glens'67 will pick you off pretty easy. SteveW
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indyphil
Gearhead Posts: 1075
From: Lafayette, IN, USA
Registered: Jul 2002
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posted 01-08-2003 02:09 PM
I have a similar car
(68 C-code) If the engine code means what i think, and you say rebuilt to stock, then part of the reason for the lacklustre performance may be the 2 barrel carb. You mentioned the butterflies not opening fully, so check that first, you can adjust the throttle linkages and make sure that there isnt an obstruction somewhere. Once you have it working properly the car may shift better (if the throttle isnt fully open it may appear to short shift on you). My 2 barrel seemed to open fully when I had it.Once the carb is adjusted right see the recent thread about the vacuum modulator on the tranny and see if that makes a difference. Otherwise the advice I have is to go get a 4 barrel carb and new intake. I did and it was like night and day. I havent run at the track yet though. Your exhaust can handle it too, so it should make a big difference to the times. A 16.9 doesnt sound so bad for a C-code 67-68 car. According to the magazines the early K codes and shelbys were mid-low 15s cars.
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BlueMule
Gearhead Posts: 1058
From: Kent Island, MD USA
Registered: Sep 2002
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posted 01-08-2003 02:37 PM
How about ignition timing... initial and total? Never overlook the obvious. Goofy things can bit you in the butt sometimes.------------------
-Paul 70 Mach1 351C
79 Ranchero GT
97 Expedition XLT 5.4
00 SVT f150 Lightning 4149 of 4966 Born on: 06/26/2000 'life's tough... it's tougher if you're stupid.'
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rockafellz
Gearhead Posts: 1329
From: San Lorenzo, CA, USA
Registered: Aug 2001
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posted 01-08-2003 03:04 PM
Wow  A lot of great information here already for you Ballerz68!!I think you've got a lot of potential for low 16s high 15s with some of the tuning suggestions you've already gotten here. Your runs were basically test runs without a tach and no idea where to shift so you don't know if you've even hit peak torque/hp yet.  I would get a tach even if it's just an el cheapo one to start off with. Maybe even a $30 shift lite if you're gonna get competitive. Then I would pinpoint your timing and carb adjustment. Were you able to check your plugs after each run down the track? Also stick to manual shifting that C4 when racing. From what i've gathered on this board, a stock c-code 2bbl should be shifted at 4800-5000rpm. But it could be more though. Erik ------------------
1966 Ford Mustang 2+2
Mine - Restomod in Progress 1966 Ford Mustang Coupe
Dad's - Original Unrestored
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BaLleRz68
Gearhead Posts: 104
From: Bay Area, CA
Registered: Aug 2002
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posted 01-08-2003 03:47 PM
Thanks for all the replys, you guys are a big help. I went to Infineon on January 1st, saw a lot of cars there. I will go back again on the 20th as well, hope to see you guys there.
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steve'66
Gearhead Posts: 6768
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 01-08-2003 04:25 PM
quote:
Originally posted by BaLleRz68:
Thanks for all the replys, you guys are a big help. I went to Infineon on January 1st, saw a lot of cars there. I will go back again on the 20th as well, hope to see you guys there.
Glen, my daughter and I will be there. What color is your stang?
What class will you be in, street or trophy? SteveW
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BaLleRz68
Gearhead Posts: 104
From: Bay Area, CA
Registered: Aug 2002
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posted 01-08-2003 07:10 PM
Light green (Lime Metallic Gold) with a black vinyl top.
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mustangboy
Gearhead Posts: 692
From: Ont, Canada
Registered: Mar 2002
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posted 01-08-2003 08:16 PM
Thats not a bad time for your setup.You need to get yourself a tach and shift the trans manually.You probably won't even get into high gear with your gears in the quarter mile or you might just shift at the line.I ran a 16.81 @ 82mph with my J-code 68 mustang with a 4 speed and 3:1 gears.Car was completly stock with 160,000 miles on it.------------------
1968 mustang j-code sprint.13.69@101 306cu.in, stock ported heads,weiand exellerator,650 holley DP,hedman hedders,comp 292 Magnum cam,4-speed,8 inch 4.11 detroit locker
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steve'66
Gearhead Posts: 6768
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 01-08-2003 08:27 PM
quote:
Originally posted by BaLleRz68:
Light green (Lime Metallic Gold) with a black vinyl top.
We will pit behind the tower on the return road if they let us. Here's a pic of my daughter's car.  SteveW
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MidLifCrisis
Gearhead Posts: 300
From: USA
Registered: Oct 2001
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posted 01-08-2003 09:36 PM
BaLleRz68, your post made me did through a couple of boxes to find some old time slips from October 1980. I had a bare bones '68 fastback whose only options were the 289 two barrel and the C-4 trans. It didn't even have a fold-down rear seat, as that was the first year that it became an option. I remember that at the time the interior was gutted except for the two buckets, lap belts, and dash. It had a fresh tune-up and time-ing was checked. It had the same 2.79 rear, but stock exhaust manifolds. My best was 16.36 @ 81.52mph with a .355 reaction time.
I had a buddy that had a 4 barrel Cleveland in a '65 coupe and another who had a '67 GT-350. My car would beat both of the line. As soon as they reached higher RPM and the secondaries on their four barrels kicked in, I saw nothing but taillights from there on.
I agree with the carb adjustment. Adjust the throttle linkage so that when the pedal is all the way down- the butterflies are all the way open. If everything else is in tune and you have a fresh motor, you should beat my times. My car had about 80K on it at the time. Good luck to you. let us know how it goes. Charlie
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FloJoe
Gearhead Posts: 518
From: Port Orange, FL, USA
Registered: Dec 2000
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posted 01-08-2003 10:18 PM
I remember my first time at the track. I had my 68 fastback with a 2-barrel, C-4 and 2.73 gears and it was mostly stock, except for hedman headers and an open base air cleaner. I ran a 16.3@89mph shifting at 4400RPM. That was my 3rd run of the day. Reaction time is a big deal so try to get that down. My best R/T was a .507 but it was in my friend's 300ZX, oh well .
------------------
Joe Fields
68 Fastback 289ci bored .030 over
C-4
"Never fry bacon in the nude.[This message has been edited by FloJoe (edited 01-08-2003).]
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Fastymz
Moderator Posts: 12673
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 01-09-2003 07:33 PM
1st thing you need to do is adjust your carb so it opens all the way.2nd you need to get more traction.You wouldn't believe how much traction and suspension can help.
Mine car was right at those time,just a few years back.Pay attention to what these say they can really help you.And you'll spend less money by learning from others mistakes.Spend some time in the racing forum reading all the posts and jump in any time. If I can be of any help let me know.
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SCOOP
oddly obsessed with big scoops on little Mustangs 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede. https://mustangsandmore.com/ubb/Fastymz.html
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662+2
Gearhead Posts: 107
From: Ontario, Canada
Registered: Jan 2003
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posted 01-10-2003 03:35 PM
Here is one of my better runs I have a 66 fastback with 289 with 95000 miles on it I put 3.8 with posi in rear, installed 498 lift cam a holley 650 double pump carb with a standard three speed trans. and edelbrock intake and K&N air filter and I have run a 14.0 in the 1/4 mile but I can not find the slip but here is the information from the one I Found 60'-2.084,330'-5.912,1/8- 9.118,1/[email protected]
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