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Re: Help me Guess my E.T. ? [Re: wkroncke17] #2927975
05/29/21 08:40 AM
05/29/21 08:40 AM
Joined: Oct 2007
Posts: 2,808
Wisconsin
wkroncke17 Offline OP
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wkroncke17  Offline OP
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I did learn how to post a video to YouTube. Below is the link, I hope it works.

https://m.youtube.com/watch?v=RtnO3F8nCak

Re: Help me Guess my E.T. ? [Re: wkroncke17] #2928248
05/29/21 06:11 PM
05/29/21 06:11 PM
Joined: Feb 2009
Posts: 892
Illinois
StrkrDart69 Offline
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Illinois
Pretty close to my combo. But I am 390 ci. Stroked Magnum. All I can say is my max x heads are not ported and mine ran out of carb at the track when I ran a 750. I put an 850 on and it liked it a lot more. I am at 11.40s in a 69 Dart. I feel you should be high 10s.

Re: Help me Guess my E.T. ? [Re: wkroncke17] #2979522
10/29/21 09:44 AM
10/29/21 09:44 AM
Joined: Feb 2014
Posts: 95
Cumming Georgia
cspracer Offline
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Cumming Georgia
Did you ever make it to the track? I am curious to see how the car actually did. I was guessing 10.90 myself, but figured the first few times out you would be in the low 11's.


1968 - 383 Roadrunner 4 speed street car, Dad bought new
1970 - 440 Roadrunner drag footbrake car 6.99 1/8th
2016 - Hemi RAM 1500 - Hauls all the toys
North Georgia / Central NC
Re: Help me Guess my E.T. ? [Re: cspracer] #2981419
11/03/21 05:13 PM
11/03/21 05:13 PM
Joined: Aug 2007
Posts: 498
El Dorado Ca
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65signet Offline
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You should be able to 60 foot in the 1.40s no problem.


1965 Plymouth Barracuda 273 M/SA
1970 Plymouth Duster 360/904 10.60s with J heads
Re: Help me Guess my E.T. ? [Re: 65signet] #2981737
11/04/21 04:58 PM
11/04/21 04:58 PM
Joined: Feb 2003
Posts: 4,953
Houston, Texas
TheOtherDodge Offline
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Years ago when I ran a 408 stroker, I tested carbs. I don't remember the exact results but went from a 750 to 850 to 950HP and ran the fasted with the 950HP.

Nice car! It would love FI on it and then you can play around with data logging and really get a nice tune on it!

Last edited by TheOtherDodge; 11/04/21 04:58 PM.
Re: Help me Guess my E.T. ? [Re: rb446] #3085615
10/12/22 10:30 PM
10/12/22 10:30 PM
Joined: Oct 2007
Posts: 2,808
Wisconsin
wkroncke17 Offline OP
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Originally Posted by rb446
According to my calcs 500hp@3500lbs, 4.30 gear and 28" tyre?, your slip would look something like this on a good hit>

Power to Weight Ratio: 0.14 : 1 (HP per 1 Pound Weight)
60 Foot E.T. : 1.55
1/8 Mile E.T. : 7.03
1/8 Mile Trap Speed :96.68
1/4 Mile E.T. : 11.14
1/4 Mile Trap Speed :120
1/4 Mile Trap RPM :6,210rpm+slip
of course things vary on the day. and just to add another opinion


Finally made it to the track!
RB you we’re almost dead on!
Right off the trailer I was impressed but it definitely has more in it.
PTC converter flash stalls at just over 4000.
Gear is too tall, I lifted before the line, it was at 6500, didn’t want to push it.
Timing is at 14 initial, 36 total, running 93 pump gas.
I tell ya, what a blast.
Let me know your thoughts guys!
And thank you for all of the previous advice and help here!

Wally.

B5F13BD2-4B29-46D3-B513-02AEFF6A6E18.jpegD49F3FF7-EE63-41D5-A168-A15F42BF224A.jpeg
Re: Help me Guess my E.T. ? [Re: wkroncke17] #3085636
10/13/22 12:43 AM
10/13/22 12:43 AM
Joined: Jan 2003
Posts: 20,158
Park Forest, IL
slantzilla Online content
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Park Forest, IL
Congratulations Wally! Glad to see you finally got it out.


"Everybody funny, now you funny too."
Re: Help me Guess my E.T. ? [Re: slantzilla] #3085673
10/13/22 06:25 AM
10/13/22 06:25 AM
Joined: Jan 2003
Posts: 5,762
Hot Rod Ridge
FastmOp Offline
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Hot Rod Ridge
Congrats

Re: Help me Guess my E.T. ? [Re: FastmOp] #3085682
10/13/22 07:57 AM
10/13/22 07:57 AM
Joined: Oct 2015
Posts: 570
UK
rb446 Offline
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UK
Nice, here's what it could with those 60's at WOT to the traps>
60 Foot E.T. : 1.49 Seconds
1/8 Mile E.T. : 6.75 Seconds
1/8 Mile Trap Speed :100.70MPH
1/4 Mile E.T. : 10.70Seconds
1/4 Mile Trap Speed :123>125 MPH
up

Last edited by rb446; 10/13/22 09:45 AM.

1969 'Cuda 446ci, best 9.96@133.9 in 1990
1971 340 'Cuda, best 11.01@122.8 in 1987
Re: Help me Guess my E.T. ? [Re: wkroncke17] #3085684
10/13/22 08:19 AM
10/13/22 08:19 AM
Joined: Jan 2003
Posts: 25,880
United Socialist States of Ame...
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tboomer Offline
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United Socialist States of Ame...
I'm glad you got it out Wally! Congrats! wave


Need your rear end checked out? Contact Grizzly!!
Re: Help me Guess my E.T. ? [Re: wkroncke17] #3085712
10/13/22 09:57 AM
10/13/22 09:57 AM
Joined: May 2019
Posts: 710
Lake Villa Il
INTMD8 Offline
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Lake Villa Il
Nice runs and great pic!

Were you letting off early? (edit, nevermind, I see you did)

Last edited by INTMD8; 10/13/22 09:58 AM.

69 Charger. 438ci Gen2 hemi. Flex fuel. Holley HP efi. 650rwhp @7250 510rwtq @5700
Re: Help me Guess my E.T. ? [Re: INTMD8] #3085843
10/13/22 09:40 PM
10/13/22 09:40 PM
Joined: Oct 2007
Posts: 2,808
Wisconsin
wkroncke17 Offline OP
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Wisconsin
Thanks all!
I’m thinking of a 4:10, or if I wanted to be a bit conservative a 3:91.
My question is will it hurt the 60’ times much?
I know a few have said more carb, more converter but the car is so very streetable right now I’m not sure I want to change too much?
If it just touched the 10’s, you guys will probably hear me holler from Great Lakes Dragaway all the way to California!
Again, thanks everyone!

Re: Help me Guess my E.T. ? [Re: wkroncke17] #3085851
10/13/22 10:12 PM
10/13/22 10:12 PM
Joined: Mar 2011
Posts: 3,068
Michigan
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A727Tflite Offline
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Originally Posted by wkroncke17
Thanks all!
I’m thinking of a 4:10, or if I wanted to be a bit conservative a 3:91.
My question is will it hurt the 60’ times much?
I know a few have said more carb, more converter but the car is so very streetable right now I’m not sure I want to change too much?
If it just touched the 10’s, you guys will probably hear me holler from Great Lakes Dragaway all the way to California!
Again, thanks everyone!


See if you can borrow a GoPro and capture rear tire slip (if any).

You may pick up by reducing starting line ratio if spinning now. Was the track typical for traction?
Plus you said you stopped short of the stripe. Not sure what impact that had on performance.

Re: Help me Guess my E.T. ? [Re: A727Tflite] #3085889
10/14/22 06:57 AM
10/14/22 06:57 AM
Joined: Oct 2015
Posts: 570
UK
rb446 Offline
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UK
We got a guy here with almost the same set up as you, Demon,all steel +glass bonnet, street/strip car
SSsprings,3.91's, 10x28 Bias, Hughes 3500 verter, prob under 10:1?
Stock J heads 2.02/1.60
Mild 340/416, mild hyd. .474/495"
TR with 2 x 650DP's.
Shifts around 5600, traps around 6k.makes around 420fwhp
here's a shot of his best run, has been 1.55 60 at the same ET. Its very soft on the hit not like yours.

[Linked Image]

I would keep the gears and put a taller tyre on it, 4.10's would make around 200rpm difference in the traps, I would also at least try a bigger carb.
I went 1.8 10ths quicker on my hyd. cammed 340 street/strip Cuda with a sorted 850DP over the 750DP that it came with.
Just for a bit more info.

Last edited by rb446; 10/14/22 07:16 AM.

1969 'Cuda 446ci, best 9.96@133.9 in 1990
1971 340 'Cuda, best 11.01@122.8 in 1987
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