Re: Guess my Dyno numbers
[Re: 10sec440]
#2493484
05/08/18 02:52 AM
05/08/18 02:52 AM
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Joined: Jan 2003
Posts: 31,050 Oregon
AndyF
I Win
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I Win
Joined: Jan 2003
Posts: 31,050
Oregon
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Is 3340 the weight with driver? If so then you are making more than 650 hp. That is a little better than I was thinking with those parts. The heads must be pretty good even though they were not ported. Looks like a fun ride. You'll need some wheelie bars if you port the heads! Is the car legal for 9's?
Last edited by AndyF; 05/08/18 02:52 AM.
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Re: Guess my Dyno numbers
[Re: 10sec440]
#2493509
05/08/18 07:52 AM
05/08/18 07:52 AM
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Joined: Oct 2015
Posts: 570 UK
rb446
mopar
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mopar
Joined: Oct 2015
Posts: 570
UK
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that is 1 cool launch....3340@134.5, I make it 667flyhp those heads are better than I thought...136 will be 687
Last edited by rb446; 05/08/18 07:53 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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Re: Guess my Dyno numbers
[Re: tex013]
#2493785
05/08/18 10:26 PM
05/08/18 10:26 PM
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Joined: May 2003
Posts: 6,566 Downtown Roebuck Ont
Twostick
Still wishing...
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Still wishing...
Joined: May 2003
Posts: 6,566
Downtown Roebuck Ont
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Makes sense, in that I'd suspect that whomever is in charge of the calibration for those carbs probably isn't told the intended application is 500 cubes making 600++ HP. Yeah, the bigger engine would create more signal than the carb was originally tuned for, whereas a too-big carb would need to be richer to crutch the lack of signal. [/quote] Spot on Brad , the too rich I encountered with the Modman and 440ci . Seen it a few times on the dyno , raw fuel/black smoke but AFR showing lean . Tex[/quote] Probably because it was misfiring. If it missed or half fired, all the oxygen that should have been used up during combustion but didn't goes roaring out the exhaust and right by the O2 sensor which has no choice but to do its job. Kevin
Last edited by Twostick; 05/08/18 10:27 PM.
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Re: Guess my Dyno numbers
[Re: gregsdart]
#2493809
05/08/18 11:29 PM
05/08/18 11:29 PM
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Joined: Feb 2005
Posts: 20,185 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,185
PA.
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IMHO you have the perfect combo, don't mess with it . Runs very consistant, low rpm, should be very reliable!!! If you want to go faster, look to removing weight rather than changing the motor or rpm you run. Guess why i think this way? M Like Greg said concentrate on making the car lighter while still keeping it simple. Man you guys in other countries race fat cars. Even your A Body’s are heavy.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: Guess my Dyno numbers
[Re: 10sec440]
#2493848
05/09/18 03:07 AM
05/09/18 03:07 AM
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Joined: Jan 2003
Posts: 31,050 Oregon
AndyF
I Win
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I Win
Joined: Jan 2003
Posts: 31,050
Oregon
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Thanks Andy! The first 1000 feet is spectacular! 1.304 60 foot, 109.5 at the 1/8th but it stops accelerating at 1000’ so I’m trying different converters to get the tightest one I can find and then I’m going to have to do a gear change. My feeling is to should go a high 60 or low 70 at 136. I’m pretty happy with it, its deadly consistentl too. I built it to limit myself to 10.0’s so now I’m past that and legal I will want to go as fast as I can to make it all worth it. Lol I thought about it some more and it might be cheaper and easier to do a cam change than a gear change. If you had a little bit larger cam then it will pull all the way to the stripe and you won't need to change the rear gear. You probably have enough data now to sit down with a cam guy and talk it over. My guess is that you need another 5 degrees of duration at 0.050 to pull to the stripe but if it was me I'd run it by Dwayne to see what he says.
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Re: Guess my Dyno numbers
[Re: 10sec440]
#2494001
05/09/18 04:01 PM
05/09/18 04:01 PM
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Joined: Aug 2003
Posts: 43,228 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,228
Bend,OR USA
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If it was my decision on your parts I would send the heads out this coming winter and have them CNC ported and have the 2.25 intake valves installed to allow more RPM from then on Are you sure it isn't running out of fuel at the 1000 mark? I've seen so many drag cars( of all brands ) that have those issue with no other signs of lost of fuel delivery If you can't jet it up enough to slow the MPH down in the 1/4 mile your running out of fuel, not fuel pressure, fuel volume One of my newer Holley HP 1050 Dominator carb. had one .110 needle and seat in the front or rear and the other one was a .120 seat, I could not jet that carb. up enough at the 1/4 mile track to slow my old pump gas Duster down Once I changed it to .120 on both fuel bowls I could Lots of gremlins out there
Last edited by Cab_Burge; 05/09/18 04:14 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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