LS3 Carbed build

General engine tech -- Drag Racing to Circle Track

Moderator: Team

JodyB
Pro
Pro
Posts: 212
Joined: Mon Feb 20, 2017 1:46 pm
Location:

Re: LS3 Carbed build

Post by JodyB »

Square port 6.0:)
You do not have the required permissions to view the files attached to this post.
JodyB
Pro
Pro
Posts: 212
Joined: Mon Feb 20, 2017 1:46 pm
Location:

Re: LS3 Carbed build

Post by JodyB »

Wow, upside down and sideways:) They straighten up when u click them, lol
D.S.R.E.
Member
Member
Posts: 127
Joined: Thu Oct 07, 2010 12:19 am
Location: tigard Oregon

Re: LS3 Carbed build

Post by D.S.R.E. »

Over 700 set up right, I'd go solid roller, let it rpm!
heads need to be right, check out the Mast single plane intake, it will like a tighter LSA than a efi intake
Build it Once Build it Right!
CGT
Guru
Guru
Posts: 2063
Joined: Sun May 10, 2009 12:29 pm
Location:

Re: LS3 Carbed build

Post by CGT »

D.S.R.E. wrote: Sun Nov 19, 2017 6:03 pm Over 700 set up right, I'd go solid roller, let it rpm!
heads need to be right, check out the Mast single plane intake, it will like a tighter LSA than a efi intake
A solid roller would be cool. But it adds thousands in expense....springs to fit that head that will run a solid roller, lifters, rocker arms etc.

I plan on using mostly all of the oe stuff and travel limiting the stock lifters. 700? Really? Do you have any tips on the heads? The Mast intake is awesome but also out of budget. Thanks for the reply
steve cowan
Guru
Guru
Posts: 2253
Joined: Wed Jul 27, 2011 5:22 am
Location: brisbane AUSTRALIA

Re: LS3 Carbed build

Post by steve cowan »

autogear wrote: Fri Nov 17, 2017 2:08 pm Fill out a cam request for Jones Cams?
autogear,
just heads up
chad and randy know plenty about lobe families and whats required for any performance application
just sayin
steve c
steve c
"Pretty don't make power"
RevTheory
Guru
Guru
Posts: 5646
Joined: Thu Sep 04, 2014 6:45 am
Location:

Re: LS3 Carbed build

Post by RevTheory »

Chad, you may want to look up some of SAM's EMC builds to see if something gives you a fancy idea. If I remember right, they went against the grain on the wide LSA deal and did a 104 or something.
CGT
Guru
Guru
Posts: 2063
Joined: Sun May 10, 2009 12:29 pm
Location:

Re: LS3 Carbed build

Post by CGT »

RevTheory wrote: Mon Nov 20, 2017 8:25 am Chad, you may want to look up some of SAM's EMC builds to see if something gives you a fancy idea. If I remember right, they went against the grain on the wide LSA deal and did a 104 or something.
Yeah, I've looked that stuff over through the years. This will be built with an rpm range a decent amount higher than EMC. That starts changing things in my opinion. It will most likely be pulled from 5 to 7500 or higher possibly, seeing as it is predominantly another dyno toy. But cam changes are simple on these things SO....... :lol:
steve316
Expert
Expert
Posts: 630
Joined: Fri Apr 13, 2007 10:06 pm
Location: St.Joseph,mo.

Re: LS3 Carbed build

Post by steve316 »

I understand about budgets; if porting the intake is in your future look @ all-pro intake it is the real deal. :)
RevTheory
Guru
Guru
Posts: 5646
Joined: Thu Sep 04, 2014 6:45 am
Location:

Re: LS3 Carbed build

Post by RevTheory »

Sounds fun!
CGT
Guru
Guru
Posts: 2063
Joined: Sun May 10, 2009 12:29 pm
Location:

Re: LS3 Carbed build

Post by CGT »

steve316 wrote: Tue Nov 21, 2017 11:59 am I understand about budgets; if porting the intake is in your future look @ all-pro intake it is the real deal. :)
Ill take a look. Thanks Steve.
gas 84k
New Member
New Member
Posts: 8
Joined: Tue Aug 31, 2010 8:00 am
Location:

Re: LS3 Carbed build

Post by gas 84k »

I think 650 will be quite achievable
I just finished a 4.0 x 3.622 wossner pistons total seal rings plate honed with a Jones Cam 232/235 276/292 612/600 112 on 108 ICL LS7 lifters I left the cross section just cleaned up the spring pad rocker bolt etc on the intake ported the exhaust I will have to find my measurements on the exhaust but set the throats @ 89% both sides 3/8 pushrods .
As the engine went into a VE it went on rollers with a Manual it made 487 @ 7000 at the tyres curve was flat as hell from 3500 to 5500
I would of loved to feed it E85 and 13.5 to 1 in saying that I didn’t look fully at the calcs to achieve this and don’t believe this would be acheivable with a flat top and keeping integrity in the heads .
CGT
Guru
Guru
Posts: 2063
Joined: Sun May 10, 2009 12:29 pm
Location:

Re: LS3 Carbed build

Post by CGT »

Resized_20171127_172434.jpg
Resized_20171127_172451.jpg
Ls3 head on 4.065 bore and Ls3 head on 4.065 bore with .030 offset pin.
You do not have the required permissions to view the files attached to this post.
3pedals
Member
Member
Posts: 151
Joined: Tue Nov 13, 2007 7:15 pm
Location: WPG. Manitoba

Re: LS3 Carbed build

Post by 3pedals »

I made 648 @7500 , 526 @ 5400, on a basically stock truck LY6 6.0 with LS3 heads.
Heads milled .050", and .040"x 4.00
gaskets for compression.
Ports hand blended in the bowls by me. Nothing much done really.
Oem valve job.
Cam was a hydraulic. Done by Bret Bauer. 236/262 110lsa in strait up.
Intake was edelbrock Vic jr L92, with injector bosses ported out. 1" open carb spacer.
850 mighty demon carb
1 3/4" headers
CGT
Guru
Guru
Posts: 2063
Joined: Sun May 10, 2009 12:29 pm
Location:

Re: LS3 Carbed build

Post by CGT »

3pedals wrote: Thu Nov 30, 2017 8:45 pm I made 648 @7500 , 526 @ 5400, on a basically stock truck LY6 6.0 with LS3 heads.
Heads milled .050", and .040"x 4.00
gaskets for compression.
Ports hand blended in the bowls by me. Nothing much done really.
Oem valve job.
Cam was a hydraulic. Done by Bret Bauer. 236/262 110lsa in strait up.
Intake was edelbrock Vic jr L92, with injector bosses ported out. 1" open carb spacer.
850 mighty demon carb
1 3/4" headers
Thats 1.44 tq per cube. World class tq on an honest dyno for that kind of deal. . Any more details on that build......dyno.....cf etc. Where has Bret been btw?
3pedals
Member
Member
Posts: 151
Joined: Tue Nov 13, 2007 7:15 pm
Location: WPG. Manitoba

Re: LS3 Carbed build

Post by 3pedals »

The dyno may have been a little happy, Idk. It was calibrated during the dyno day session, because the operator couldnt believe it.
Correction was STP, I have to look to see if uncorrected data is still avail. That was 2012.
Was run on 91 octane non wth gas.
Car weighed 3425lbs and trapped 130 with a stick shift
I don't know where Bret is? I couldn't get a hold of him to do a turbo cam for me???
Post Reply