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Does this look about right? #1082180
09/25/11 04:08 PM
09/25/11 04:08 PM
Joined: Oct 2008
Posts: 492
South Jersey, NJ
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DragDart360 Offline OP
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Recording tach video of 10.56 run. Launched off brake at 2K



70 Dart Swinger, 2850 lbs
SB 408, Bullet roller 264/268 @50 .636 SSDS stage 2 Edelbrock heads, 1 7/8 Headmans, 1050 dominator by Dom, 9.867 @ 133
Re: Does this look about right? [Re: DragDart360] #1082181
09/25/11 04:13 PM
09/25/11 04:13 PM
Joined: Nov 2003
Posts: 7,348
Mt.Vernon ,Ohio
VernMotor Offline
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VernMotor  Offline
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Mt.Vernon ,Ohio
What are the LED numbers ?

Re: Does this look about right? [Re: VernMotor] #1082182
09/25/11 04:19 PM
09/25/11 04:19 PM
Joined: Dec 2009
Posts: 1,074
detroit, mi
POS Dakota Offline
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Quote:

What are the LED numbers ?




Those are the recorded seconds of the run I believe, but if going by the video it seems like a 22 second pass.

Re: Does this look about right? [Re: POS Dakota] #1082183
09/25/11 05:30 PM
09/25/11 05:30 PM
Joined: Oct 2008
Posts: 492
South Jersey, NJ
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DragDart360 Offline OP
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LED #s are run time in seconds. Playback in 1/2 speed makes 11 sec. 22


70 Dart Swinger, 2850 lbs
SB 408, Bullet roller 264/268 @50 .636 SSDS stage 2 Edelbrock heads, 1 7/8 Headmans, 1050 dominator by Dom, 9.867 @ 133
Re: Does this look about right? [Re: POS Dakota] #1082184
09/25/11 05:31 PM
09/25/11 05:31 PM
Joined: Jan 2007
Posts: 3,695
nc
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emarine01 Offline
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Wow... That's a lot different than mine mud racing We shift 1-2 @ .21 then 2-3 @ .49... tach stays between 6800 & 7200 from the hit on for 200 ft.... looks like you don't spin much on launch

Re: Does this look about right? [Re: emarine01] #1082185
09/25/11 06:13 PM
09/25/11 06:13 PM
Joined: Nov 2003
Posts: 7,348
Mt.Vernon ,Ohio
VernMotor Offline
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So you shift at 6500 and lose 1000 rpm at the shift. is this a small block ? ok I read your sig..it is.

Re: Does this look about right? [Re: VernMotor] #1082186
09/25/11 06:32 PM
09/25/11 06:32 PM
Joined: May 2004
Posts: 3,210
robin hood country
deaks Offline
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robin hood country
What gear and tyre size do you run.
Mick


69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200#
best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft
best 60ft 1.36
Re: Does this look about right? [Re: deaks] #1082187
09/25/11 07:10 PM
09/25/11 07:10 PM
Joined: Oct 2008
Posts: 492
South Jersey, NJ
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DragDart360 Offline OP
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3.91 gear, 29 X 10 Hoosier bias ply, 904 w/ std gearing.
What should I be looking at as far as converter slip etc.
I bought the tach to see if I hit my shift points but I know there's more info there than that.


70 Dart Swinger, 2850 lbs
SB 408, Bullet roller 264/268 @50 .636 SSDS stage 2 Edelbrock heads, 1 7/8 Headmans, 1050 dominator by Dom, 9.867 @ 133
Re: Does this look about right? [Re: DragDart360] #1082188
09/25/11 07:31 PM
09/25/11 07:31 PM
Joined: Jan 2007
Posts: 3,695
nc
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emarine01 Offline
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We use tach play back for just about everything,,, from tune up to tire size, Don't have much track print out info except final ET, It takes a little time with play back but there is a lot of good info to be had between time & RPM

Re: Does this look about right? [Re: emarine01] #1082189
09/25/11 08:09 PM
09/25/11 08:09 PM
Joined: May 2004
Posts: 3,210
robin hood country
deaks Offline
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deaks  Offline
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robin hood country
I would have thought with your motor, 4.30's would be better, you're only goiing through the line at 6200.
My 440 is pulling 6500 at the stripe.


69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200#
best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft
best 60ft 1.36
Re: Does this look about right? [Re: deaks] #1082190
09/25/11 08:52 PM
09/25/11 08:52 PM
Joined: Feb 2009
Posts: 1,532
off the grid
340B5 Offline
pro stock
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off the grid
Quote:

I would have thought with your motor, 4.30's would be better, you're only goiing through the line at 6200.
My 440 is pulling 6500 at the stripe.




I noticed it looked like you were crossing the finish @ 6200 or just a little more and shifting @ 6500. It looks like you could be running out of fuel before the end of 1st? Reason why.....if the playback is accurate it seems to lay over a little @4800 then start accelerating again @ 5800 until the shift point.

I bet it's got a low 10 in it


Yeah, it's got a smallblock.
Re: Does this look about right? [Re: 340B5] #1082191
09/27/11 01:00 PM
09/27/11 01:00 PM
Joined: May 2007
Posts: 279
Chicago land, IL
dafixr Offline
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Chicago land, IL
What model and number is that tach, we are looking for a new one and that one is pretty nice to see the time during a run. Thanks JIM

Re: Does this look about right? [Re: dafixr] #1082192
09/30/11 02:25 PM
09/30/11 02:25 PM
Joined: Oct 2008
Posts: 492
South Jersey, NJ
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DragDart360 Offline OP
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Quote:

What model and number is that tach, we are looking for a new one and that one is pretty nice to see the time during a run. Thanks JIM




It's the 6874 Ultimate playback. Here's the link for more info:
http://www.autometer.com/cat_data_tachdetail.aspx?pid=6


70 Dart Swinger, 2850 lbs
SB 408, Bullet roller 264/268 @50 .636 SSDS stage 2 Edelbrock heads, 1 7/8 Headmans, 1050 dominator by Dom, 9.867 @ 133
Re: Does this look about right? [Re: DragDart360] #1082193
09/30/11 04:29 PM
09/30/11 04:29 PM
Joined: Mar 2008
Posts: 5,746
Ontario, Canada
Dodgem Offline
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Ontario, Canada
I would say 7 to 8% TQ slip not bad. cool to watch it run that way I got to gets me one of them!







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