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Re: car won't 60 foot video
[Re: birdtracker]
#2118071
07/26/16 01:31 PM
07/26/16 01:31 PM
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Joined: Jan 2003
Posts: 14,499
So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,499
So. Burlington, Vt.
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Yup, not enough gear for starters.
IMO, unless the motor is at least an honest 13.5:1cr, both the comp .690 and .692 rollers have too much duration for that combo.
And even at 13.5:1, I think for 1/8 mile racing especially, something shorter would be quicker.
The other thought I had was to try and verify you're getting a good clean release in the trans when you let go of the button.
If the 60' times are about the same when footbraking it, that would tell you the brake is releasing fully.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
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Re: car won't 60 foot video
[Re: fast68plymouth]
#2118098
07/26/16 02:20 PM
07/26/16 02:20 PM
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Joined: May 2005
Posts: 1,986
Apollo, PA.
B1MAXX
top fuel
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top fuel
Joined: May 2005
Posts: 1,986
Apollo, PA.
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Yup, not enough gear for starters.
IMO, unless the motor is at least an honest 13.5:1cr, both the comp .690 and .692 rollers have too much duration for that combo.
And even at 13.5:1, I think for 1/8 mile racing especially, something shorter would be quicker.
The other thought I had was to try and verify you're getting a good clean release in the trans when you let go of the button.
If the 60' times are about the same when footbraking it, that would tell you the brake is releasing fully. X2 on that cam, when I had a 3.9 stroke combo I switched from that comp .690 which is 287 @ .050 to a custom comp which was 276 @ .050 and picked up 2 tenths. I ran a 31" tire with 4.56's also.
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Re: car won't 60 foot video
[Re: a493demon]
#2118144
07/26/16 03:22 PM
07/26/16 03:22 PM
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Joined: Jan 2003
Posts: 25,801
Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,801
Rio Linda, CA
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Looks to me like it's dead hooking and bogging it down. Yep, needs a little wheel speed.
The INTERNET, the MISinformation superhighway
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Re: car won't 60 foot video
[Re: birdtracker]
#2118302
07/26/16 05:20 PM
07/26/16 05:20 PM
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Joined: Jul 2010
Posts: 2,422
Pittsburgh PA
Eric
top fuel
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top fuel
Joined: Jul 2010
Posts: 2,422
Pittsburgh PA
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What's the weight? First off I would lay off the burnout. Mickey's don't need it. I'm not convinced you need that much more gear. I wouldn't go more than .88's personally. I still don't think the gear is your issue. I would take the timing to 38 and see if there is any change.
5.53 @ 125 1/8th on the launch control..more left in her!
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Re: car won't 60 foot video
[Re: birdtracker]
#2118380
07/26/16 07:23 PM
07/26/16 07:23 PM
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Joined: Jul 2004
Posts: 19,317
State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,317
State of confusion
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What size dominator is it............My bad just saw 1050...... 
Last edited by Thumperdart; 07/27/16 05:53 PM.
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: car won't 60 foot video
[Re: birdtracker]
#2118462
07/26/16 08:58 PM
07/26/16 08:58 PM
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Joined: Jan 2004
Posts: 8,265
fredericksburg,va
cudaman1969
master
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master
Joined: Jan 2004
Posts: 8,265
fredericksburg,va
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I tryed a 4:86 gear at the beginning of last year. It was screaming before the 1/8 mile. I do run some 1/4 mile such as Norwalk this weekend. I degreed the cam in and know its in at 106 unless something moved when I slide the gear drive cover on. I can check that. I was going to try timing this weekend and maybe a different carb. Thanks for all the suggestions. Birdtracker Screaming? Mine was going 125 mph at 6100 with a 4.56 and 33 " tire, driveshaft speed, 5800. 60 was 1.2. Something might be amiss in the trans or converter. 1/8 mile
Last edited by cudaman1969; 07/27/16 01:11 PM.
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Re: car won't 60 foot video
[Re: birdtracker]
#2118736
07/27/16 12:31 AM
07/27/16 12:31 AM
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Joined: Jan 2003
Posts: 14,499
So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,499
So. Burlington, Vt.
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I agree, that thing should be able to pull a 4.88 in the 1/4 with 32" tires no problem.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
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Re: car won't 60 foot video
[Re: birdtracker]
#2119007
07/27/16 12:59 PM
07/27/16 12:59 PM
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Joined: Jan 2003
Posts: 14,499
So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,499
So. Burlington, Vt.
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I guess maybe we need to backtrack a bit......
What is the motor build like? Compression, heads, intake, headers, etc?
What does the car weigh?
What do you expect it to run in the 1/8 and 1/4?
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
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Re: car won't 60 foot video
[Re: birdtracker]
#2119069
07/27/16 02:30 PM
07/27/16 02:30 PM
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Joined: May 2005
Posts: 1,986
Apollo, PA.
B1MAXX
top fuel
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top fuel
Joined: May 2005
Posts: 1,986
Apollo, PA.
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I tryed a 4:86 gear at the beginning of last year. It was screaming before the 1/8 mile. I do run some 1/4 mile such as Norwalk this weekend. I degreed the cam in and know its in at 106 unless something moved when I slide the gear drive cover on. I can check that. I was going to try timing this weekend and maybe a different carb. Thanks for all the suggestions. Birdtracker Heck I ran 5.13's for a while with that cam....7400 thru the traps......1/4 mile also.
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Re: car won't 60 foot video
[Re: birdtracker]
#2119260
07/27/16 07:27 PM
07/27/16 07:27 PM
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Joined: Jul 2004
Posts: 19,317
State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,317
State of confusion
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What was that 60 cos it seems to lay down then pick up...........
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: car won't 60 foot video
[Re: birdtracker]
#2119428
07/27/16 10:30 PM
07/27/16 10:30 PM
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Joined: Nov 2004
Posts: 6,890
North Alabama
Monte_Smith
master
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master
Joined: Nov 2004
Posts: 6,890
North Alabama
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If that mph is right the car has decent power. Big block A-body..........so what? 3000lbs. If that is accurate, for that mph, 700ish horsepower. HP based on the ET and weight would be 150 or so less. So the car is WAY down on power early. General consensus here is add gear and while that may help, the problem appears that the converter is way wrong or broken. 4.10 is enough gear. May not be optimal, but it's enough for this car to 60 way better than it does
Last edited by Monte_Smith; 07/27/16 10:31 PM.
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