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Re: Dyno day tomorrow! [Re: gregsdart] #2803194
07/31/20 09:07 AM
07/31/20 09:07 AM
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Mt Morris Michigan
mopar dave Offline
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Nice job. The feeling of success is awesome as some of us don't get it too often in the hobby. It's gonna fly.

Re: Dyno day tomorrow! [Re: mopar dave] #2803294
07/31/20 01:35 PM
07/31/20 01:35 PM
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Frostbitefalls MN (Rocky&Bullw...
gregsdart Offline OP
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Originally Posted by mopar dave
Nice job. The feeling of success is awesome as some of us don't get it too often in the hobby. It's gonna fly.

Thanks Dave.
What i just saw was that max vacuum was only four inch. I used to run ten to eleven. There could be some power there if i can find the leaks and get the vacuum back up to ten plus.


8.77 153 mph best, 3055 lbs 528 indy 440-1 alky
Re: Dyno day tomorrow! [Re: gregsdart] #2803363
07/31/20 04:36 PM
07/31/20 04:36 PM
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Frostbitefalls MN (Rocky&Bullw...
gregsdart Offline OP
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Each time we fattened it up it made more power. About 4 hp per step. So there might be a little more power when i get some smaller main pills to fatten it more yet. I will need them anyway as the DA was 3077 when tuning. Add that to the possible gain from vacuum working, it should go over 930 hp or more. Andy, whats a dry sump worth?šŸ˜


8.77 153 mph best, 3055 lbs 528 indy 440-1 alky
Re: Dyno day tomorrow! [Re: gregsdart] #2803369
07/31/20 04:49 PM
07/31/20 04:49 PM
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Posts: 27,261
Oregon
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AndyF Offline
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Oregon
Originally Posted by gregsdart
Each time we fattened it up it made more power. About 4 hp per step. So there might be a little more power when i get some smaller main pills to fatten it more yet. I will need them anyway as the DA was 3077 when tuning. Add that to the possible gain from vacuum working, it should go over 930 hp or more. Andy, whats a dry sump worth?šŸ˜


A dry sump is worth from zero to 50 hp depending on the combo. If you have a really good deep wet sump on the engine right now with a good windage tray, scraper and vacuum pump then you probably won't see much difference with a dry sump. If you have a shallow pan that is compromised by the chassis design then you could pick up quite a bit. All depends on how good your oil control is with the wet sump.

Do you have gas ported pistons and narrow rings in the engine? If you do then a dry sump (or more pan vacuum) should pick up power. The shortblock really needs to be built for pan vacuum to make more power. I used a lot of those tricks to make 900+ hp with the 514 that had Indy EZ heads on it. Gas porting, narrow rings, skirt coatings, bearing coatings, dry sump, etc. If you're trying to push the power up close to four digits you have to dig into the special parts bin.

Last edited by AndyF; 07/31/20 06:30 PM.
Re: Dyno day tomorrow! [Re: AndyF] #2803371
07/31/20 05:16 PM
07/31/20 05:16 PM
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Posts: 366
Laredo, Texas USA
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Congratulations those are impressive numbers!!!! Would you be changing your gears and stall converter?

Re: Dyno day tomorrow! [Re: hugo] #2803391
07/31/20 06:37 PM
07/31/20 06:37 PM
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Posts: 17,570
Las Vegas
Al_Alguire Offline
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Las Vegas
BBM's seem to love fuel, like way over Stoich for the fuel used form my experience. Like using Q16 just dump it in and they seem to make power.

Re: Dyno day tomorrow! [Re: Al_Alguire] #2803438
07/31/20 08:15 PM
07/31/20 08:15 PM
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Frostbitefalls MN (Rocky&Bullw...
gregsdart Offline OP
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Thanks Andy. My pan is very good. But i do run a lot of oil to the heads, so i suppose there might be a little power from a dry sump, but your comments make me think not a lot. The shortblock is .043 .043 3/16 low tension oil rings, gas ported and coated piston skirts. The rest is standard stuff, no other coatings.
As far as converter is, i don't think i need much change. My guess is the stall will be close since the motor fell back to 6200 on the shifts with the 528. I will probably cross the line at 7500 with the 4.56 gears i have. I have a set of 4.30s on the shelf in case i need them. My WAG on how fast it will go is maybe 8.65 on a very good DA of 1600 or so. Time will tell.


8.77 153 mph best, 3055 lbs 528 indy 440-1 alky
Re: Dyno day tomorrow! [Re: gregsdart] #2803674
08/01/20 11:53 AM
08/01/20 11:53 AM
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Posts: 1,445
Glendora Ca.
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Just-a-dart Offline
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Glendora Ca.
Very happy for you Greg. I'm looking forward to seeing track results.



"Just a Bracket car dressed up like a streetcar"
Re: Dyno day tomorrow! [Re: Just-a-dart] #2803994
08/01/20 10:47 PM
08/01/20 10:47 PM
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Frostbitefalls MN (Rocky&Bullw...
gregsdart Offline OP
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Thanks Rod!


8.77 153 mph best, 3055 lbs 528 indy 440-1 alky
Re: Dyno day tomorrow! [Re: gregsdart] #2804009
08/01/20 11:37 PM
08/01/20 11:37 PM
Joined: Oct 2006
Posts: 897
New York, USA
Chargerfan68 Offline
super stock
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New York, USA
Greg, iā€™m assuming you run vertical gas ports, correct? Not lateral? Also curious....what size and how many ? I just finished my motor, and i put 12 ports .060ā€ per piston.

Last edited by Chargerfan68; 08/01/20 11:46 PM.

1.50 60Ft. , 10.75@ 127MPH Hauling 3900 LBS.
Re: Dyno day tomorrow! [Re: Chargerfan68] #2804020
08/02/20 12:40 AM
08/02/20 12:40 AM
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Frostbitefalls MN (Rocky&Bullw...
gregsdart Offline OP
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Originally Posted by Chargerfan68
Greg, iā€™m assuming you run vertical gas ports, correct? Not lateral? Also curious....what size and how many ? I just finished my motor, and i put 12 ports .060ā€ per piston.

Off the top of my head that sounds similar to what i have. Vertical, 12, .060?


8.77 153 mph best, 3055 lbs 528 indy 440-1 alky
Re: Dyno day tomorrow! [Re: gregsdart] #2804161
08/02/20 12:27 PM
08/02/20 12:27 PM
Joined: Oct 2006
Posts: 897
New York, USA
Chargerfan68 Offline
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Thanks. I have read anywhere from .045ā€ to .060ā€. A few pistons i saw with them had .060ā€. So i went with that. Any link to a vid of yours on dyno? Would love to hear it.


1.50 60Ft. , 10.75@ 127MPH Hauling 3900 LBS.
Re: Dyno day tomorrow! [Re: Chargerfan68] #2804258
08/02/20 02:36 PM
08/02/20 02:36 PM
Joined: Jan 2003
Posts: 8,850
Frostbitefalls MN (Rocky&Bullw...
gregsdart Offline OP
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I had a buddy record some. I will see if he can send me a link.


8.77 153 mph best, 3055 lbs 528 indy 440-1 alky
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