LS3 startup with open headers
Thread Starter
Race Director
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
LS3 startup with open headers
Not sure if this will work. Not great on the computer. I started the LS3 up with the open cut off headers I had. These are not the AR headers I have been working on but the cut up Melrose headers just so I can run and move the car. Short 28 second video.
Seems to work. This was done with my Ipad so the sound is not great.
Seems to work. This was done with my Ipad so the sound is not great.
Last edited by Gordonm; Jan 2, 2014 at 12:45 PM.
Thread Starter
Race Director
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
There really is nothing yet. I just cut up an air bridge so I could mount the MAF. Sensor. That is one of my major projects.. I'd love to make an over the radiator support system but with the hood opening the way it does it is tough. May just put In a 90 degree setup for the time being but as you can see there is no room for an air filter setup with the current setup. I'm working on it though.
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Thread Starter
Race Director
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
Right now it is not running properly. No O2 sensors installed but it has the stock injectors and I am using the computer that came with the 09 Vette the motor came from. It has had all the emissions and Vats taken out but certainly not fine tuned yet. It runs well enough to move under its own power but not road drive able yet.
Racer
Joined: Oct 2011
Posts: 318
Likes: 3
From: NP Nebraska
Right now it is not running properly. No O2 sensors installed but it has the stock injectors and I am using the computer that came with the 09 Vette the motor came from. It has had all the emissions and Vats taken out but certainly not fine tuned yet. It runs well enough to move under its own power but not road drive able yet.
Thread Starter
Race Director
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
I got the wiring harness and had PSI do this. They removed the Vats and just put in a preliminary tune to get it running. I am only using one set of o2 sensors as this is all that is needed when not running the cats.
Race Director
Joined: Jan 2000
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From: San Jose CA
Rear O2 sensors are there to determine whether or not the catalytic converters are operating correctly. No cats, no need for rear O2s.
Thread Starter
Race Director
Joined: Dec 1999
Posts: 19,610
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From: Forked River NJ
Team Owner
Joined: Apr 1999
Posts: 21,953
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From: Reno Nevada
2024 C3 of the Year Finalist- Modified
actually the local race shop told me that those 2008 and later ls3 heads are good as is to about 600 hp. In stock form the valve weight and spring combo limits them to 6600 rpm. Some people go to the biggest BeeHive springs that Comp Cams sells and then they spin them to 7500.
Thread Starter
Race Director
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
The cam is only 223/231 @ .050 so it does not need to be wound up very high. I did upgrade the springs to what Comp cams said to upgrade to. They Are beehive springs. I should not need to go over 65000 rpm for max power with this combo. Thinking of porting or changing the intake and throttle body for a little extra HP.