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Input on launch, video attached
#845503
11/04/10 12:33 AM
11/04/10 12:33 AM
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Joined: Feb 2007
Posts: 352
Pennsylvania, USA
Big_Fish
OP
enthusiast
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OP
enthusiast
Joined: Feb 2007
Posts: 352
Pennsylvania, USA
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I finally got out again and hit Cecil for the N/A shootout. Someone video taped one of my launches so I can finally see how the car is reacting. I have new rear shocks and they seemed to be at the best setting. Front shocks are older and I could use a better converter. Tires don't seem to spin but I can't get the front end up and my 60's are too high. Best 60ft was 1.382. Any input for getting a better hook? I went to a 33" tire from 32" and kept 4:56 gears. I don't think I have any tire spin but just can't get it up on the tire. Will a new converter tailered to this engine and some new front coil overs get the front to lift or do I need to also change the rear gears? Hope this youtube video loads ok. Thanks http://www.youtube.com/watch?v=B0PmN1kCT8s
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Re: Input on launch, video attached
[Re: Quicktree]
#845506
11/04/10 07:20 AM
11/04/10 07:20 AM
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Joined: Nov 2006
Posts: 637
Kokomo,IN
StripeHOG
mopar
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mopar
Joined: Nov 2006
Posts: 637
Kokomo,IN
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did you leave at an idle????
Andrew Brough D372
1969 Dodge Dart GTS
1.43 60'best
6.82 1/8 98mph
"the light came on and I ran out of talent"
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Re: Input on launch, video attached
[Re: Big_Fish]
#845507
11/04/10 08:10 AM
11/04/10 08:10 AM
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Joined: Mar 2008
Posts: 5,746
Ontario, Canada
Dodgem
master
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master
Joined: Mar 2008
Posts: 5,746
Ontario, Canada
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Your front end is not reacting much at all?? looks like it only has about 1 to 1 1/2" of suspension travel! Are the shocks super tight against separation? Does not look like it spins! But I'm no expert. 
Last edited by Dodgem; 11/04/10 08:12 AM.
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Re: Input on launch, video attached
[Re: Dodgem]
#845508
11/04/10 02:36 PM
11/04/10 02:36 PM
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Joined: Jan 2003
Posts: 2,915
A shed in England
Tig
master
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master
Joined: Jan 2003
Posts: 2,915
A shed in England
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 Difficult to see on the vid but it doesn't look like it's hitting the rear tyre hard, as has been said check the front suspension for movement didn't see much weight transfer at all. Looked like it was spinning to me, did it leave some stripes and caterpiller marks? Need more info. Whats the set up ie 4 link, ladders, stock front? whats the 1/4 time and MPH? Nice looking 'Cuda BTW, sits real nice
'74 Challenger..9.46 @ 145.9 1/4, 6.001 @ 118 1/8 so far. 4023lb !!! # N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials.
9.51 @ 142.4 1/4, 6.003 @ 114 1/8 with our old mule KB, 572-13, 580 wedge.
RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03
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Re: Input on launch, video attached
[Re: Tig]
#845509
11/04/10 05:16 PM
11/04/10 05:16 PM
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Joined: Feb 2009
Posts: 1,019
Finland
mafo
super stock
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super stock
Joined: Feb 2009
Posts: 1,019
Finland
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sounds like converter problem to me, couldn t really hear much rpm drop when shifting to third 
-65 Valiant,420", all motor,2700#, dot tires, 8,42 @ 160,2
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Re: Input on launch, video attached
[Re: mafo]
#845510
11/04/10 05:31 PM
11/04/10 05:31 PM
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Joined: Nov 2003
Posts: 6,293
Rock Springs
Bob_Coomer
master
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master
Joined: Nov 2003
Posts: 6,293
Rock Springs
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A car running 1.3x 69ft times should really be pitch rolling. The car acts like it has no front suspension at all. It looks like it drive out of the launch on rails.
Front shocks would be the first thing to change.
[color:"red"]65 Hemi Belvedere coming soon [/color]
[color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]
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Re: Input on launch, video attached
[Re: Bob_Coomer]
#845511
11/04/10 05:33 PM
11/04/10 05:33 PM
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Joined: Jan 2003
Posts: 32,394
Quicktree
I Win
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I Win
Joined: Jan 2003
Posts: 32,394
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Quote:
A car running 1.3x 69ft times should really be pitch rolling. The car acts like it has no front suspension at all. It looks like it drive out of the launch on rails.
Front shocks would be the first thing to change.
not really if it doesn't have enough power to work the suspension. mine does the same exact thing. I have talked to Monte about this this and he agrees..
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Re: Input on launch, video attached
[Re: Quicktree]
#845513
11/04/10 05:47 PM
11/04/10 05:47 PM
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Joined: Feb 2009
Posts: 401
dayton,ohio
ROSSIO
mopar
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mopar
Joined: Feb 2009
Posts: 401
dayton,ohio
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convertor is a little "tight"--loosen it up-----
and get some more travel out of the frt shocks.
like to see more "lift" in the front end.
just an personal guess---without being right there to see the car up close and get some E.T. info
1970 DART B1MC N/A
8.86@ [Email]155
3200 lb on 275 DR
5.30 @ 130 1/8
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Re: Input on launch, video attached
[Re: CHAPPER]
#845515
11/04/10 11:41 PM
11/04/10 11:41 PM
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Joined: Feb 2007
Posts: 352
Pennsylvania, USA
Big_Fish
OP
enthusiast
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OP
enthusiast
Joined: Feb 2007
Posts: 352
Pennsylvania, USA
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I appreciate all the input Here's some more info... 4link, new strange rear double adjustable shocks, older front Alden adjustable, 5500 TCI converter from original motor. Car weighs 2880 with driver. Hoosier QTP 33x22.50 DOT slicks. I took measurements, jacked up the front end and measured again and I have 2 1/4in of total travel, magnumforce tubular front end. Times on that run were, 60ft=1.383, 330=4.10, 1/8th=6.424 at 105.92, 1000ft=8.421 1/4=10.105 at 134.11. Car just doesn't feel like it will transfer the weight off the front end and get out of the hole quick enough. New front shocks and a nice custom converter for this combo were put on the back burner but I'm wondering how much difference those changes will make since I'm ready to pull the trigger and crack open the wallet. Any miracles like several tenths out of this possible?
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Re: Input on launch, video attached
[Re: StripeHOG]
#845516
11/04/10 11:43 PM
11/04/10 11:43 PM
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Joined: Feb 2007
Posts: 352
Pennsylvania, USA
Big_Fish
OP
enthusiast
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OP
enthusiast
Joined: Feb 2007
Posts: 352
Pennsylvania, USA
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Quote:
did you leave at an idle????
Yes, I was leaving off idle didn't even get it up on the converter when I left. I have a trans brake but the car seems to like to leave better on foot brake.
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Re: Input on launch, video attached
[Re: Bob_Coomer]
#845517
11/04/10 11:52 PM
11/04/10 11:52 PM
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Joined: Feb 2007
Posts: 352
Pennsylvania, USA
Big_Fish
OP
enthusiast
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OP
enthusiast
Joined: Feb 2007
Posts: 352
Pennsylvania, USA
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Quote:
A car running 1.3x 69ft times should really be pitch rolling. The car acts like it has no front suspension at all. It looks like it drive out of the launch on rails.
Front shocks would be the first thing to change.
Exactly how it feels. It takes off but doesn't pitch roll like I would expect. The Alden shocks are probably the originals from the tubular magnumforce front end, they're that old. They are on the loosest setting. Not much space for the coil overs (about 12-13in) when static so I'm not sure what new coil over options I have to get the best travel without make the car sit high? Any recommendations? Should I stick with Strange like the rears I just put on for up front or is there a better selection specifically for this type of setup?
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Re: Input on launch, video attached
[Re: Big_Fish]
#845518
11/05/10 10:40 AM
11/05/10 10:40 AM
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Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
Quote:
did you leave at an idle????
Yes, I was leaving off idle didn't even get it up on the converter when I left. I have a trans brake but the car seems to like to leave better on foot brake.
I'd try and load the converter some..also it didn't sound like it flashed anywhere near 5500. And I did not see any wheel spin either.
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Re: Input on launch, video attached
[Re: Mr.Yuck]
#845519
11/05/10 12:44 PM
11/05/10 12:44 PM
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Joined: Feb 2004
Posts: 6,257
acworth / N. georgia - south e...
cheapstreetdustr
master
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master
Joined: Feb 2004
Posts: 6,257
acworth / N. georgia - south e...
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i agree on the power application and converter.. if you listen to the motor..it doesnt come up on top of the cam until 60ft.. you can hear the engine come to life about 50/60ft out.. you need to be able to leave closer to that power point.. a well sourced converter should do that.. Higher initial rpm (in the power range)launch with a different converter should help.. cheapst 
365" Iron J heads,,3480lbs best 1.39 60ft on SS springs.10.54,124 mph ...6.67 1/8th et.average 60fts 1.46 w/ small cam &.063 no2 pill tagged & insured
[image][/image]
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Re: Input on launch, video attached
[Re: Big_Fish]
#845520
11/05/10 02:11 PM
11/05/10 02:11 PM
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Joined: Jan 2003
Posts: 2,915
A shed in England
Tig
master
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master
Joined: Jan 2003
Posts: 2,915
A shed in England
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Quote:
I appreciate all the input Here's some more info... 4link, new strange rear double adjustable shocks, older front Alden adjustable, 5500 TCI converter from original motor. Car weighs 2880 with driver. Hoosier QTP 33x22.50 DOT slicks. I took measurements, jacked up the front end and measured again and I have 2 1/4in of total travel, magnumforce tubular front end. Times on that run were, 60ft=1.383, 330=4.10, 1/8th=6.424 at 105.92, 1000ft=8.421 1/4=10.105 at 134.11. Car just doesn't feel like it will transfer the weight off the front end and get out of the hole quick enough. New front shocks and a nice custom converter for this combo were put on the back burner but I'm wondering how much difference those changes will make since I'm ready to pull the trigger and crack open the wallet. Any miracles like several tenths out of this possible?
Picked up over 3 10ths with a custom converter (ATi) Best was 10.37 from a previous best of 10.71. We also added a windage tray at the same time too, what that contributed I don't know.
Tyres looked like they were cupping and or wadding going of the marks they left behind, anyone else notice?
Also did I hear a slight miss through the top?
ET looks a tad slow for the MPH to me but my car is a tank anyway 
'74 Challenger..9.46 @ 145.9 1/4, 6.001 @ 118 1/8 so far. 4023lb !!! # N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials.
9.51 @ 142.4 1/4, 6.003 @ 114 1/8 with our old mule KB, 572-13, 580 wedge.
RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03
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Re: Input on launch, video attached
[Re: Tig]
#845521
11/05/10 06:18 PM
11/05/10 06:18 PM
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Joined: Nov 2003
Posts: 6,293
Rock Springs
Bob_Coomer
master
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master
Joined: Nov 2003
Posts: 6,293
Rock Springs
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Have you double checked the 4-link settings, lots of variables, probably 1200+ positions only a few are correct.
Im not buying the "not enough power" excuse. I see lots of guys at many diff tracks getting up on the rear tires, some pulling some outstanding wheel stands at unbelievable low rpm's, at slower e/t's.
Im betting its i the adjustment and maybe the converter.
[color:"red"]65 Hemi Belvedere coming soon [/color]
[color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]
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