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#2115487 - 07/22/16 11:37 AM Re: My bracket hemi build [Re: Triple Threat]
STEFF Offline
master

Registered: 01/19/03
Posts: 3766
Loc: Smyrna, South Carolina
Trans Brake set at 4500 or 5000 depending...5500 Converter Flash, Shift at 7300-7500. My engine is 401", 4.10 bore x 3.79 stroke. Motor peak HP is at 7000, Peak torque was 5200-5300 if I remember correctly.

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#2115491 - 07/22/16 11:44 AM Re: My bracket hemi build [Re: STEFF]
Triple Threat Offline


Registered: 01/19/03
Posts: 6211
Loc: Renton Washington
Interesting, 9 more cubes, but 1/4" less stroke.

Need to put mine on a chassis dyno at least to see where the peaks are.

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#2115532 - 07/22/16 12:49 PM Re: My bracket hemi build [Re: Triple Threat]
STEFF Offline
master

Registered: 01/19/03
Posts: 3766
Loc: Smyrna, South Carolina
Originally Posted By Triple Threat
Interesting, 9 more cubes, but 1/4" less stroke.

Need to put mine on a chassis dyno at least to see where the peaks are.


How big is your motor?

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#2115587 - 07/22/16 01:45 PM Re: My bracket hemi build [Re: Triple Threat]
Triple Threat Offline


Registered: 01/19/03
Posts: 6211
Loc: Renton Washington
392" 3.927 x 4.050
_________________________
-Dustin
392" G3 Hemi
1.37, 6.17@111, 9.74@136.9

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#2166992 - 10/03/16 11:03 AM Re: My bracket hemi build [Re: Triple Threat]
Triple Threat Offline


Registered: 01/19/03
Posts: 6211
Loc: Renton Washington
Cliff Notes: 515 HP to the Tire

Took the old girl to the dyno on Saturday, tried a few small things with jetting and timing, wasn't able to find any real power but it was interesting none the less.

The dyno doesn't like the converter, it flashes to 6300 and was causing the graph to have a giant hole in it, thus why the graph has MPH on it instead.

The engine never stopped pulling, on each run, peak horsepower occurred where I lifted. I pulled it to 7500 and it was still gaining. I don't ever plan to spin it beyond that so I didn't bother to rev it up more. In hindsight I probably should have tried 7800 just to see what happened and verified the valve train stability. I may do that in the spring if I make some changes this winter.



Hopefully I will be taking the car out in the next few weeks with a shorter tire on it to let the car rev more. With the 30" slick now it goes through the traps about 6900. I've got a 28" radial on it that should let it sing a bit more. The switch to a radial alone should be worth about a tenth, plus whatever is gained by 2 inches less height.


Edited by Triple Threat (10/03/16 11:13 AM)
_________________________
-Dustin
392" G3 Hemi
1.37, 6.17@111, 9.74@136.9

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#2167026 - 10/03/16 11:47 AM Re: My bracket hemi build [Re: Triple Threat]
72Swinger Offline
master

Registered: 02/23/11
Posts: 4302
Loc: Nebraska
Was that altitude corrected?
_________________________
Mopar to the bone!!!

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#2167046 - 10/03/16 12:24 PM Re: My bracket hemi build [Re: Triple Threat]
Triple Threat Offline


Registered: 01/19/03
Posts: 6211
Loc: Renton Washington
It was correcting after the pull so i'll say yes.

Upper right corner on the sheet it says CF: SAE.

The first pull it made 520 and then corrected down to 513 for whatever that's worth.
_________________________
-Dustin
392" G3 Hemi
1.37, 6.17@111, 9.74@136.9

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#2167123 - 10/03/16 02:12 PM Re: My bracket hemi build [Re: Triple Threat]
72Swinger Offline
master

Registered: 02/23/11
Posts: 4302
Loc: Nebraska
I know your up there a ways, those are stout numbers with a loose vert.
_________________________
Mopar to the bone!!!

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#2181352 - 10/24/16 10:43 AM Re: My bracket hemi build [Re: Triple Threat]
Triple Threat Offline


Registered: 01/19/03
Posts: 6211
Loc: Renton Washington
New best this weekend. There were issues with water seeping up near the 1/4 mile so we only got to run 1/8th. The track also hadn't been raced on in 2 months so it was pretty green and lots of guys including me spinning the tires. I made 4 runs total, only 2 of them were good.

Incrementals
OLD NEW
1.438 1.438
4.190 4.128
6.516 6.422 .09 better
104.96 106.27 1.3 MPH better
10.264 ?
130.94 ?

I estimate the car was going to run 10.10-10.12 ish at 132. Ricer math as I like to call it with just a bit of tire spin. The car went 1.41 the pass before this and 6.426 and should be capable of 1.3X using the transbrake. These runs were both footbraking.

Now the winter upgrades and diet program can begin.
_________________________
-Dustin
392" G3 Hemi
1.37, 6.17@111, 9.74@136.9

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#2181503 - 10/24/16 01:39 PM Re: My bracket hemi build [Re: Triple Threat]
72Swinger Offline
master

Registered: 02/23/11
Posts: 4302
Loc: Nebraska
It is running right where it should be imo. But quicker is always nice!
_________________________
Mopar to the bone!!!

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#2181512 - 10/24/16 01:50 PM Re: My bracket hemi build [Re: Triple Threat]
Triple Threat Offline


Registered: 01/19/03
Posts: 6211
Loc: Renton Washington
I only get to chase ET a few times a year since i'm usually bracket racing. Fun to chip away at it and see results.
_________________________
-Dustin
392" G3 Hemi
1.37, 6.17@111, 9.74@136.9

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#2181554 - 10/24/16 02:55 PM Re: My bracket hemi build [Re: Triple Threat]
onig Offline
enthusiast

Registered: 07/09/08
Posts: 348
Loc: Canada
What upgrades do you have in mind for over the winter?
_________________________
69 Dart, The BB is now gone, Soon to be Gen 3 Hemi...

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#2181639 - 10/24/16 05:09 PM Re: My bracket hemi build [Re: Triple Threat]
Triple Threat Offline


Registered: 01/19/03
Posts: 6211
Loc: Renton Washington
Nothing Engine wise, maybe port the intake.

Mostly chassis work, rear discs and lightening the car a hundred pounds or more. The engine works well, need to make things around it more efficient.
_________________________
-Dustin
392" G3 Hemi
1.37, 6.17@111, 9.74@136.9

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#2181831 - 10/24/16 09:06 PM Re: My bracket hemi build [Re: Triple Threat]
Just-a-dart Offline
pro stock

Registered: 02/20/11
Posts: 1273
Loc: Glendora Ca.
This is good to hear Dustin, glad to see the car is still happy
_________________________

"Just a Bracket car dressed up like a streetcar"

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#2182083 - 10/25/16 10:28 AM Re: My bracket hemi build [Re: Just-a-dart]
Triple Threat Offline


Registered: 01/19/03
Posts: 6211
Loc: Renton Washington
Originally Posted By Just-a-dart
This is good to hear Dustin, glad to see the car is still happy


It is, now hurry up and finish yours!
_________________________
-Dustin
392" G3 Hemi
1.37, 6.17@111, 9.74@136.9

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#2184575 - 10/28/16 01:17 PM Re: My bracket hemi build [Re: Triple Threat]
cudadoug Offline
master

Registered: 08/22/03
Posts: 3078
Loc: Between a rock & a hard place
Originally Posted By Triple Threat
Should fire up in the next couple days. Might visit the track this weekend if all goes smoothly.


Are those stock replacement coils?


Attachments
Dustin_G3_hemi.jpg




Edited by cudadoug (10/28/16 01:20 PM)

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#2184592 - 10/28/16 01:25 PM Re: My bracket hemi build [Re: Triple Threat]
Triple Threat Offline


Registered: 01/19/03
Posts: 6211
Loc: Renton Washington
Factory coils from the junkyard.

I paid $30 for the coils, 1 valve cover and the front cover. The second valve cover was damaged.
_________________________
-Dustin
392" G3 Hemi
1.37, 6.17@111, 9.74@136.9

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#2184750 - 10/28/16 04:23 PM Re: My bracket hemi build [Re: Triple Threat]
cudadoug Offline
master

Registered: 08/22/03
Posts: 3078
Loc: Between a rock & a hard place
Originally Posted By Triple Threat
Factory coils from the junkyard.

I paid $30 for the coils, 1 valve cover and the front cover. The second valve cover was damaged.


LOL...excellent!

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#2332124 - 07/05/17 05:54 PM Re: My bracket hemi build [Re: Triple Threat]
Triple Threat Offline


Registered: 01/19/03
Posts: 6211
Loc: Renton Washington
Original goal from first post "Run 10.0's at 3350"

Car went 10.03@134 this past weekend at 3380 LBS, on bias plys, through the mufflers. 29.50 baro, 83% humidity, it was around 1000' DA if I remember correctly.

Made 18 runs on Sunday, all between 10.03-10.11.

I'll wait for the cooler fall air to come around then switch to lighter oil, radials and maybe ditch some extra weight and see how far I can go before tech officials catch onto the lack of roll cage. In previous testing the oil was worth close to a tenth and so were the radials.

Pretty pleased with the Hemi, it's won enough money to pay for itself.
_________________________
-Dustin
392" G3 Hemi
1.37, 6.17@111, 9.74@136.9

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#2332127 - 07/05/17 06:04 PM Re: My bracket hemi build [Re: Triple Threat]
sixpackgut Offline
Drag Week Mod Champion

Registered: 06/08/03
Posts: 9101
Loc: Charleston
That is awesome
_________________________
Gen 3 power 6.22@110, 9.85@135
Follow @g3hemiswap on instagram

performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs

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