i'm at work and wanting to get home to see if stuff came...haha 
LS6 Heads with G5X3?
Thread Starter
Joined: Jun 2003
Posts: 7,128
Likes: 5
From: Pittsburgh, PA
LS6 Heads with G5X3? I'm throwing in a G5X3 this winter along with LS6 intake, long tubes, duals, etc... the whole works. The goal was 400+rwhp and to break into the 11's at 120mph. I'm now thinking of maybe going a little step further and just throwing some heads on while it's at Rapid. I really don't want my car to be too radical since I drive it 365 days a year.
But If I could get a pair of complete, unported, LS6 heads for a decent price, how well would they work with the cam? I'm going with a 114 lsa, so that wouldn't matter for the heads would it? How much more power would you say I'd see with the heads? I'd like to think 425rwhp with the heads on top of the G5X3...
But If I could get a pair of complete, unported, LS6 heads for a decent price, how well would they work with the cam? I'm going with a 114 lsa, so that wouldn't matter for the heads would it? How much more power would you say I'd see with the heads? I'd like to think 425rwhp with the heads on top of the G5X3...
i would definatly get them ported...i'm getting mine ported and i'm going to be driving mine 365 days a year as well...i don't see any real reason besides money i guess that you shouldn't port them...however your power estimates seem about right to me with unported ls6 heads...
Thread Starter
Joined: Jun 2003
Posts: 7,128
Likes: 5
From: Pittsburgh, PA
Originally Posted by 777
i would definatly get them ported...i'm getting mine ported and i'm going to be driving mine 365 days a year as well...i don't see any real reason besides money i guess that you shouldn't port them...however your power estimates seem about right to me with unported ls6 heads...
Thread Starter
Joined: Jun 2003
Posts: 7,128
Likes: 5
From: Pittsburgh, PA
Originally Posted by 777
sounds like a good plan to me...good luck...i'm in the process of getting my combo set up as well...i'm ready for everything to get settled...very stressful!
Oh well, the results will keep me happy
Oh, one thing you're not considering for daily driver duty is that I have snow and freezing temps here! If I were in Florida, things would be a bit better
****...the researching...deciding...changing your mind...stressing....is all part of the fun for me!!!! it keeps it exciting!!! i mean...who wants to build their motor/car just once and have it exactly the way they want it?? 
yeah, me too.....but its fun aint it??
yeah, me too.....but its fun aint it??
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Thread Starter
Joined: Jun 2003
Posts: 7,128
Likes: 5
From: Pittsburgh, PA
Originally Posted by Insomniak
just be sure if you get the heads milled at all that your flycut the pistions.. power sounds right.. i've seen a few z06's hit as high as 430rwhp on stock LS6 heads w/ that cam
Thread Starter
Joined: Jun 2003
Posts: 7,128
Likes: 5
From: Pittsburgh, PA
It's made by LG Motorsports. Here's the "known" specs...
2??/2?? Duration & 600/610 Lift at 114 Lobe Seperation.
It's bigger than their X2 which is 232/240 Duration & 595/608 Lift at 114 Lobe Seperation.
The X3 is a roudy cam, makes big power, and IMO, is very streetable.
2??/2?? Duration & 600/610 Lift at 114 Lobe Seperation.
It's bigger than their X2 which is 232/240 Duration & 595/608 Lift at 114 Lobe Seperation.
The X3 is a roudy cam, makes big power, and IMO, is very streetable.
Thread Starter
Joined: Jun 2003
Posts: 7,128
Likes: 5
From: Pittsburgh, PA
Originally Posted by Dear John
Sure does, but I wouldn't know anything about that. 
That's a good idea bro. Just don't mill them and you'll be fine.
That's a good idea bro. Just don't mill them and you'll be fine. I can't wait. Gonna send the money order out tomorrow! Thanks for your patience! 
FormerVendor
Joined: Nov 2001
Posts: 654
Likes: 0
From: Dallas/Wylie Texas
Here is a graph of a Z06 corvette with just headers, G5X-3 cam and full mufflers.
Just as they drive on the street. No ported tb and full belts and stock water pump. 160 thermostat and stock intake. If you mill them you will just have to fly cut but you can clean them up with a .005 cut with no issues with stock valve size.
Have fun. You will love them.
LG
Just as they drive on the street. No ported tb and full belts and stock water pump. 160 thermostat and stock intake. If you mill them you will just have to fly cut but you can clean them up with a .005 cut with no issues with stock valve size.
Have fun. You will love them.
LG
Thread Starter
Joined: Jun 2003
Posts: 7,128
Likes: 5
From: Pittsburgh, PA
Thanks for the graph LG! Jeez... I was thinking about passing on the heads for now... but those numbers look great, and there is still a lot to be left on the table!
