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#1973426 - 12/20/15 05:05 PM Re: My bracket hemi build [Re: Triple Threat]
twayne24365 Offline


Registered: 09/11/14
Posts: 141
Loc: Maryland
Just saw the link didn't go according to plan, here it is

http://www.hughesengines.com/TechArticles/21740hpgen3hemi.php

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#1973642 - 12/21/15 12:02 AM Re: My bracket hemi build [Re: Triple Threat]
Triple Threat Offline


Registered: 01/19/03
Posts: 6183
Loc: Renton Washington
For comparison sake I had a 390 LA engine in this car before. It had 2 points less compression, 11:1, a similar sized solid flat tappet. And heads that went 280@.600
That combo went 10.75@123 on pump gas.

2 points more compression, 75 more CFM of head flow at .600 and some corn juice fueling it. How much ET is that worth??? Hopefully enough haha.

Car is only legal to 10.00 as it sits....
_________________________
-Dustin
392" G3 Hemi
1.37, 6.17@111, 9.74@136.9

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#1973645 - 12/21/15 12:07 AM Re: My bracket hemi build [Re: Triple Threat]
72Swinger Offline
master

Registered: 02/23/11
Posts: 4302
Loc: Nebraska
Yep you will be slowing it down to stay legal.
_________________________
Mopar to the bone!!!

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#1991631 - 01/15/16 09:10 PM Re: My bracket hemi build [Re: Triple Threat]
StealthWedge67 Offline
master

Registered: 07/19/06
Posts: 4080
Loc: Puyallup, WA
Don't normally drop in on the GIII page, so I had missed this until now. Looks like a great build, License & more cage work may be in your future. Cant wait to see the Red Car under your shoe again, D!
_________________________
LemonWedge - Street heavy / Strip ready - 11.39 @ 116


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#1999808 - 01/27/16 12:33 PM Re: My bracket hemi build [Re: Triple Threat]
Triple Threat Offline


Registered: 01/19/03
Posts: 6183
Loc: Renton Washington
Pistons finally showed up last week so got the block bored and honed to size.

Owner of the shop was happy we used the torque plate, he checked it after finishing with a bore gauge and noted it moves about .0008 with the plate not bolted down.

Will begin our mock up next week.





_________________________
-Dustin
392" G3 Hemi
1.37, 6.17@111, 9.74@136.9

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#2000287 - 01/28/16 01:17 AM Re: My bracket hemi build [Re: Triple Threat]
Stroker Scamp Offline
master

Registered: 11/03/04
Posts: 3399
Loc: pacific northwest
Good luck on the build, looking forward to see how it runs
Be nice to know someone hear in the NW that's figuring out all the tricks to get one of these going!!
_________________________
footbrake N/A SB 408 Scamp 10.10 @ 132 street/strip

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#2000471 - 01/28/16 12:15 PM Re: My bracket hemi build [Re: Triple Threat]
MattW Offline
master

Registered: 06/02/05
Posts: 2546
Loc: Ontario Canada
Looking good!!!
One question?
Would it wise to deburr the top of the piston? They LOOK like they have shape edges.
Matt

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#2000548 - 01/28/16 02:04 PM Re: My bracket hemi build [Re: Triple Threat]
72Swinger Offline
master

Registered: 02/23/11
Posts: 4302
Loc: Nebraska
I agree^^^, I would sand those crowns with wet 1000 grit.
_________________________
Mopar to the bone!!!

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#2000613 - 01/28/16 03:59 PM Re: My bracket hemi build [Re: Triple Threat]
Triple Threat Offline


Registered: 01/19/03
Posts: 6183
Loc: Renton Washington
They look sharper in the picture than real life, but i'll definitely be going over everything.

Thanks for the idea!
_________________________
-Dustin
392" G3 Hemi
1.37, 6.17@111, 9.74@136.9

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#2000700 - 01/28/16 06:09 PM Re: My bracket hemi build [Re: Triple Threat]
w2stroker Offline
enthusiast

Registered: 07/20/07
Posts: 204
Loc: bonney lake washington
dropped my motor off at the machinist today. got to see Dustin's heads on the cart. more sexy jewelry.they look fricken awesome! lol

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#2000980 - 01/29/16 12:35 AM Re: My bracket hemi build [Re: MattW]
Street Monkies Offline


Registered: 08/26/14
Posts: 161
Loc: In a house near you
They do look nice, but I agree also. You can't go wrong making sure everything is deburred, and smooth. Less chance for detonation. Looking forward to hearing how it runs. I hope it goes exactly what you want. I think it will.

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#2001223 - 01/29/16 12:29 PM Re: My bracket hemi build [Re: Triple Threat]
HotRodDave Offline
master

Registered: 01/29/05
Posts: 9643
Loc: Kalispell Mt.
That piston looks like detonation city, as well as blocked flame travel and crevice volume up the wazoo. Would it not have been better to mill the heads some and get a much smoother dome shape even if it still ended up a tad less compression?

As for polishing pistons tops I use 1000 grit also and wet it but not with water but WD-40, it seems to clog less.
_________________________
I am not causing global warming, I am just trying to hold off a impending Ice Age!

68 cuda 360 notchback SOLD

1996 Ram 2500 5.9 eddy intake EQ heads, mild cam upgrade great tow rig!


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#2001228 - 01/29/16 12:35 PM Re: My bracket hemi build [Re: Triple Threat]
HotRodDave Offline
master

Registered: 01/29/05
Posts: 9643
Loc: Kalispell Mt.
I guess I should elaborate on the detonation, those ridges beside the exhaust valve look like the worst offenders, they are gonna get real hot real fast as well as blocking flow of the last little bit of exhaust stroke and that will reduce scavenging. I would eliminate them all together. Then open up the spark plug divots for more access for the flame to travel to all surfaces faster and easier then put a big radius on everything else except above the top ring land obviously. I bet you will make more power and reliability even if it costs 1/2 point compression.
_________________________
I am not causing global warming, I am just trying to hold off a impending Ice Age!

68 cuda 360 notchback SOLD

1996 Ram 2500 5.9 eddy intake EQ heads, mild cam upgrade great tow rig!


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#2011094 - 02/13/16 11:47 AM Re: My bracket hemi build [Re: HotRodDave]
383man Offline
Too Many Posts

Registered: 01/19/03
Posts: 26624
Loc: Balt. Md
Yea I just decided to drop in over here because the new Gen III Hemi's really impress me and yours sounds like its gonna be a very nasty running build. up Good luck as it sounds like you will hit 10.0's or better to me. Ron
_________________________
My car...63 Sport Fury Max Wedge wanna be street car..with new 493 pump gas full exh eng.......10.76 @ 124.49 ! ! ! My page on the cool 62-65 Mopar site ! http://www.1962to1965mopar.ornocar.com/mmo82008.html

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#2014250 - 02/17/16 07:25 PM Re: My bracket hemi build [Re: Triple Threat]
340RICK Offline
master

Registered: 02/16/03
Posts: 3995
Loc: GO BUCKS !!!!!!!
you will have no problem running 10flat

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#2014381 - 02/17/16 10:15 PM Re: My bracket hemi build [Re: Triple Threat]
astjp2 Online   content
master

Registered: 01/18/11
Posts: 4126
Loc: Utah and Alaska
I would have gotten ceramic coatings on the pistons...oil shedding on the bottom, heat reflective on top and anti scuff on the sides
_________________________
1941 Taylorcraft
1968 Charger
1994 Wrangler
1998 Wrangler
2008 Kia Rio
2017 Jetta

I didn't do 4 years and 9 months of Graduate School to be called Mister!

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#2014637 - 02/18/16 11:05 AM Re: My bracket hemi build [Re: Triple Threat]
Triple Threat Offline


Registered: 01/19/03
Posts: 6183
Loc: Renton Washington
We did some mock up this past weekend.

Piston to Valve
.075 intake
.115 exhaust

My Apaches are 71.5 CC

Compression appears to be 13.5:1 based on our calculations, should work fine on E85.
_________________________
-Dustin
392" G3 Hemi
1.37, 6.17@111, 9.74@136.9

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#2014745 - 02/18/16 01:52 PM Re: My bracket hemi build [Re: Triple Threat]
sixpackgut Offline
Drag Week Mod Champion

Registered: 06/08/03
Posts: 9052
Loc: Charleston
Originally Posted By Triple Threat
We did some mock up this past weekend.

Piston to Valve
.075 intake
.115 exhaust

My Apaches are 71.5 CC

Compression appears to be 13.5:1 based on our calculations, should work fine on E85.


you need bigger cam and you can send me your little one that is bigger than mine
_________________________
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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#2015056 - 02/18/16 08:45 PM Re: My bracket hemi build [Re: Triple Threat]
Just-a-dart Offline
super stock

Registered: 02/20/11
Posts: 1148
Loc: Glendora Ca.
Good to see you are making progress Dustin.
_________________________

"Just a Bracket car dressed up like a streetcar"

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#2026460 - 03/07/16 11:06 AM Re: My bracket hemi build [Re: Triple Threat]
Triple Threat Offline


Registered: 01/19/03
Posts: 6183
Loc: Renton Washington
Short Block is together. Trying to have the engine completely finished this week.
_________________________
-Dustin
392" G3 Hemi
1.37, 6.17@111, 9.74@136.9

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