Re: Quest for the tens. One move at a time...
[Re: Quicksilver440]
#587754
01/20/10 01:16 AM
01/20/10 01:16 AM
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Joined: Jul 2004
Posts: 4,384 Worst Weather USA
493_DART
master
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master
Joined: Jul 2004
Posts: 4,384
Worst Weather USA
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it has / or had something to do with Dynamic. The Dynamic guy moved on? Or he took tct to dynamic? im not sure not sure on the whole story-- sixpackgut may know
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Re: Quest for the tens. One move at a time...
[Re: 493_DART]
#587755
01/20/10 02:04 AM
01/20/10 02:04 AM
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Joined: Jan 2003
Posts: 10,766 Central Valley, CA.
Quicksilver440
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,766
Central Valley, CA.
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Quote:
it has / or had something to do with Dynamic.
The Dynamic guy moved on? Or he took tct to dynamic? im not sure
not sure on the whole story--
sixpackgut may know
Thanks...I searched for TCT and came up with links to "Dynamic racing transmissions"...but all the links are dead.
I'm running a Frank Lupo dynamic 9.5"...but it wasn't made for my combo (it's too tight). I've thought of having mine loosened up or having a new one built.
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Re: Quest for the tens. One move at a time...
[Re: 1Bad440]
#587757
01/20/10 03:25 PM
01/20/10 03:25 PM
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Joined: Jul 2007
Posts: 150 South Carolina, United States
carolinacuda
OP
member
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OP
member
Joined: Jul 2007
Posts: 150
South Carolina, United States
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Im not sure bout weight. But I got a Glass hood with and alum radiator. I also removed power steering to save some weight. Im thinking bout 3500ish maybe. Thanks for all the responses. The compr is 10.8 and the stall is a 10". My 1/8 is 7.32 @ 90mph (i think) not positive, im not at home and time slip is there. My fuel line is 3/8
Last edited by carolinacuda; 01/20/10 03:50 PM.
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Re: Quest for the tens. One move at a time...
[Re: Kiddart]
#587759
01/20/10 04:44 PM
01/20/10 04:44 PM
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Joined: Jan 2003
Posts: 10,018 Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,018
Frostbitefalls MN (Rocky&Bullw...
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Finding out what it wants for a tuneup would be first in my book. If there is a very good chassis dyno and operater in the area, I would go there. Also, stuff like long collecters, cold air package, unstable timing, timing curve, cam installed centerline (maybe advance it?) and a bowl port and sharp valve job on the heads ( > $350? )to get the most out of it. If you have done the heads, great. Try less lash, first on intake then exhaus. Watch the individual segments of the run, plus weather, to get accurate data. Finally, the dyno will show if you need some jet changes, and if the air fuel ratio is right at all rpm ranges.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Quest for the tens. One move at a time...
[Re: carolinacuda]
#587762
01/20/10 05:30 PM
01/20/10 05:30 PM
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Joined: Jan 2003
Posts: 15,439 Val-haul-ass... eventually
BradH
Taking time off to work on my car
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Taking time off to work on my car
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
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Quote:
11.49 @118mph with a 1.55 60ft.
I see a bunch of people screaming for a converter. However, unless you've run the #s to calc your slippage percent w/ the current one and know it's 10% or more, I don't think you're going to see much from a converter change, assuming you stick w/ a street/strip converter.
How much RPM is it turning going through the traps at 118 MPH? IIRC, when I used 4.10s w/ the same size tire mine were around 6300 at that MPH and my converter slippage was 7-8%. It would have been around 6000 for me w/ 3.91s.
What model of 850 Demon? Have you actually done any tuning on it at the track to see how the car responds to jet changes, etc.? "Out of the box" jetting for some Demon models are pretty far from ideal, to be blunt.
How's the ignition set up? Done any comparisons of different total timing #s at the track?
What's the rest of the exhaust behind the headers? Are you running mufflers that are choking it down, even w/ a 3" setup?
I don't particularly think stock EZs w/ a standard port size are that effective for a combination like yours (it's a big volume for that flow level). There might be some gains from having somebody who knows those heads well do some work to make them "happier". (Suggestion: Dwayne Porter at Porter Racing Heads in Vermont)
Do you have enough valve spring to let that engine rev to 6600-6800 rpm w/ that cam? If you really pick up some MPH from porting or whatever, it's going to want to spin that high.
These are all improvements that can be found from "super tuning" and lots of test & tune time at the track. However, as it stands you simply don't have the MPH to break into the 10s, if you intend to keep it a legit street car. I just barely broke into the 10.9s w/ a 1.53 60-ft. and my MPH was 122+. The 1/8th mile time was in the 6.9s at 98 MPH.
Been there, done that, got the credit card bills and the stack of time slips to prove it.
Last edited by Captain Budget!; 01/20/10 05:50 PM.
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Re: Quest for the tens. One move at a time...
[Re: carolinacuda]
#587764
01/24/10 11:07 PM
01/24/10 11:07 PM
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Joined: Oct 2003
Posts: 3,698 NE Oklahoma
Von
master
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master
Joined: Oct 2003
Posts: 3,698
NE Oklahoma
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Converter needs to go for sure.
I had a TCI 10 inch that at the time performed OK. But looking back it had about 13 percent slip, which sucks, plain and simple.
In my car a TA tight 8 inch that flashes right under 5k was worth at least .17 over a very decent PTC that flashed at 4200. Both converters calculate to 8 percent slip.
Id bet you would pick up .2 and 2 MPH with a better converter.
As others have said there should be more in your combo, maybe 10s as it sits. 10s with a converter change and tuning.
I didnt read the whole thread, but did you have the seats reground on your heads or are they the Indy supplied valve job?
72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72.
Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.
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