LS3 Cam Only with LG Headers, G3X-4 cam, K&N Air Charger, no tune
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Originally Posted by Beaflag VonRathburg
No, it's the same. It just has a silencer baffle that covers the top and makes it look different.
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Originally Posted by 1bigcam
if this car makes 480 why are some 416-402-408 making the same or less?? just asking b/c i worried my 416 wont make any power and i have ported heads
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If you put a big enough cam with the right amount of duration it will make power. But you need to keep the valves open the correct amount of time to allow all that displacement to draw enough air in. I'm thinking it's going to take a good deal of testing trial and error to find the right cam for these heads on different displacements. A cam that works good on a 376 most likely won't work as good on a 408. In fact it might be too restrictive and hinder making any power at all.
-Kevin
-Kevin
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Originally Posted by shazow1969
If you put a big enough cam with the right amount of duration, in the right places it will make power. But you need to keep the valves open the correct amount of time to allow all that displacement to draw enough air in. I'm thinking it's going to take a good deal of testing trial and error to find the right cam for these heads on different displacements. A cam that works good on a 376 most likely won't work as good on a 408. In fact it might be too restrictive and hinder making any power at all.
-Kevin
-Kevin
#68
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Guys, we have been working on these style heads for over 3 years now. I have been slammed and really not able to get a tune in it yet, but the guys at HP Tuners have us covered and I know Rick at Synergy will help with that process. He is good with HPT ![Grin](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_grin.gif)
The car is amazingly fast. 70-100 is insane now that I have more seat time in it. You can feel the PCM making adjustments, and you can fool it into a decent timing table part throttle. Sad when it is faster part throttle.
As for cam size, its fairly large, but lets not forget, we are working with 374 cubes, so it soaks it up compared to a 346. Surging is really minimal, only evident in 6th gear below 1500, and thats with the stock tune.
I hope to get some form of baseline in it today and I will keep you updated![Happy](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_stretch.gif)
Louis
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The car is amazingly fast. 70-100 is insane now that I have more seat time in it. You can feel the PCM making adjustments, and you can fool it into a decent timing table part throttle. Sad when it is faster part throttle.
As for cam size, its fairly large, but lets not forget, we are working with 374 cubes, so it soaks it up compared to a 346. Surging is really minimal, only evident in 6th gear below 1500, and thats with the stock tune.
I hope to get some form of baseline in it today and I will keep you updated
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Louis
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Thanks for the reply Louis! I've searched and searched various forums for anyone running the G5X3 with L92 heads and found nothing.
What kind of power are they making (on average) with the G5X3? Thanks for ANY info....you are the only one that seems to know this combo. It would be great if I could reuse my existing cam (if it wont kill too much power).
Jason
What kind of power are they making (on average) with the G5X3? Thanks for ANY info....you are the only one that seems to know this combo. It would be great if I could reuse my existing cam (if it wont kill too much power).
Jason
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Cmon Louis, we all want to see what the car will do with a tune in it. I know you can't wait to go full throttle the next time you drive it. We all know how busy the shop is, keep up the good work.
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Still waiting on the heads to be ported. That's my guess. I know personally how busy that shop gets. Sit back and wait a minute, Louis will have something for us to sink our teeth into soon enough.
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I ran into a guy with one of these and he goes "I don't think you want some of this; 575 horse power" it was bone stock. I asked him what motor was in it and it took him awhile to tell me.. then said ls3.
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Originally Posted by crazy3rdgen
I ran into a guy with one of these and he goes "I don't think you want some of this; 575 horse power" it was bone stock. I asked him what motor was in it and it took him awhile to tell me.. then said ls3.
A guy in a new 08 Vette claimed he had 575 horses under the hood bone stock??? LOL what a moron.
#79
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Looking forward to the tune results. efilive has full 08 LS3 support out too now so things should be moving along nicely with development on the L92/LS3 heads.
Should be nicely timed for a certain 5th Gen to arrive in 18 months time
Should be nicely timed for a certain 5th Gen to arrive in 18 months time
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