New Turbo GXP...
Thread Starter
Joined: Feb 2011
Posts: 383
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From: S. FL to Philly ??
New Turbo GXP... Hey All,
Just thought I'd drop some pics - spent last weekend installing a CarTuning kit into my 07' GXP. I bought my GXP a year ago as a factory certified, so I've been waiting for the warranty to run out (I know I still have powertrain). It's got a whopping 34k on it now!
In addition to the kit, I installed an inline filter for the trans fluid and a trans cooler. I'll post on the sticky about it, but my bud is a 35+ GM trans guy and he says the way to prevent problems in the 4T65e's is to put extra magnets in the pan (GM bulletin) and use an external filter (not GM published). He says most failures he's dealt with are the result of particulate build up in the shift/ pressure solenoids and valve body, so only way to prevent it is to run inline filter. I've built many trans with him an not had a problem yet. ***Disclaimer*** If you disagree with this, I respect your position but lets not start and argument!
Also, I tucked the alki injection pump, ported a set of exhaust manifolds and had them ceramic coated. I took the time to put wire loom on all the vacuum lines because I wanted a clean look...
I'm not a track purist, so I'll just say it feels like a rocket !! I really like the fact that just cruising you can't tell there's any mods = it's quiet and smooth like stock, but stab the throttle and your gone !!!
Just thought I'd drop some pics - spent last weekend installing a CarTuning kit into my 07' GXP. I bought my GXP a year ago as a factory certified, so I've been waiting for the warranty to run out (I know I still have powertrain). It's got a whopping 34k on it now!
In addition to the kit, I installed an inline filter for the trans fluid and a trans cooler. I'll post on the sticky about it, but my bud is a 35+ GM trans guy and he says the way to prevent problems in the 4T65e's is to put extra magnets in the pan (GM bulletin) and use an external filter (not GM published). He says most failures he's dealt with are the result of particulate build up in the shift/ pressure solenoids and valve body, so only way to prevent it is to run inline filter. I've built many trans with him an not had a problem yet. ***Disclaimer*** If you disagree with this, I respect your position but lets not start and argument!
Also, I tucked the alki injection pump, ported a set of exhaust manifolds and had them ceramic coated. I took the time to put wire loom on all the vacuum lines because I wanted a clean look...
I'm not a track purist, so I'll just say it feels like a rocket !! I really like the fact that just cruising you can't tell there's any mods = it's quiet and smooth like stock, but stab the throttle and your gone !!!
Last edited by x11 nut; Oct 13, 2012 at 07:46 PM. Reason: typo
Thread Starter
Joined: Feb 2011
Posts: 383
Likes: 0
From: S. FL to Philly ??
Yes, I'm running both - I put the extra magnets in the trans pan, a stock trans filter, the inline filter (Wix), trans cooler above inter cooler, and put a drain plug in the trans pan.
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TECH Regular
Joined: Nov 2009
Posts: 446
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From: Farmington Hills, MI
Nice pick up. The turbo kits running around out there keep me from feeling superior to every stock looking and sounding LS4 car I see.
They really are. I still have mine, just in case the headers rust out. So, no sign of that being an issue though.
They really are. I still have mine, just in case the headers rust out. So, no sign of that being an issue though.
In addition to the kit, I installed an inline filter for the trans fluid and a trans cooler. I'll post on the sticky about it, but my bud is a 35+ GM trans guy and he says the way to prevent problems in the 4T65e's is to put extra magnets in the pan (GM bulletin) and use an external filter (not GM published). He says most failures he's dealt with are the result of particulate build up in the shift/ pressure solenoids and valve body, so only way to prevent it is to run inline filter. I've built many trans with him an not had a problem yet.
Last edited by DavidGXP; Oct 17, 2012 at 11:34 AM.
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Joined: Oct 2003
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ah yeah that back one doesnt looks so hot lol... what do they have 5 cylinders going through a 1.5 inch pipe?
with that being said i change my statement to i cant believe we don't gain more from headers. someone need to just redesign that back manifold.
with that being said i change my statement to i cant believe we don't gain more from headers. someone need to just redesign that back manifold.
Last edited by blkchevyz; Oct 17, 2012 at 11:23 AM.
Courtesy from fieroguru.
More LS4 restrictions! LS4 stuff is on the left, compared to typical newer style LS TB and MAF
The 78mm TB and MAF is used on most GM V6's You can verrify this on rockauto
More LS4 restrictions! LS4 stuff is on the left, compared to typical newer style LS TB and MAF
The 78mm TB and MAF is used on most GM V6's You can verrify this on rockauto
Thread Starter
Joined: Feb 2011
Posts: 383
Likes: 0
From: S. FL to Philly ??
No worries, I've been following your progress on the NA builds. I chose the Turbo kit cause it was the best setup for doing one mod and leaving it alone afterwards. The GXP is my daily driver and I'm building a project car with what will be modified LS4, so made the best sense to me.
Far as cost, I feel ya - I saved for a few years to be able to buy the car and the Turbo kit, funny part being I bought the kit before the car! I got the GXP factory certified with only 24k miles and the Turbo kit for a lot less than one would cost new or anything remotely close in performance would.
I'm looking to go to Moroso in West Palm Beach in November to try and win some beer from my buddy, so I'll be able to post some times. He's just put a Helion turbo kit on his new 5.0 Mustang... any guesses ??
Far as cost, I feel ya - I saved for a few years to be able to buy the car and the Turbo kit, funny part being I bought the kit before the car! I got the GXP factory certified with only 24k miles and the Turbo kit for a lot less than one would cost new or anything remotely close in performance would.
I'm looking to go to Moroso in West Palm Beach in November to try and win some beer from my buddy, so I'll be able to post some times. He's just put a Helion turbo kit on his new 5.0 Mustang... any guesses ??
TECH Regular
Joined: Nov 2009
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From: Farmington Hills, MI
Only one cylinder is exhausting with a lot of pressure at any point in time. The diameter and length of the primaries is a much bigger issue than how the front merges with the rear. I would bet that the power difference between the manifolds and headers is a lot greater for a heavily modified engine even still. Regardless, the intake is basically a restrictor plate and what really chokes off the engine. Those ceramic coated manifolds are probably great for a turbo motor though, what with all of the heat and velocity they send to the turbo.
Thread Starter
Joined: Feb 2011
Posts: 383
Likes: 0
From: S. FL to Philly ??
It's Bulletin #08-07-30-040B - attached.
"The current square transmission oil pan magnet may become saturated with normal ferrous sediment and the Pressure Control Solenoid (PCS) is now collecting ferrous sediment, making it vary from design. For a given current the PCS electromagnet is stronger, causing the line pressure to be less than needed."
The exernal filter is added insurance!
"The current square transmission oil pan magnet may become saturated with normal ferrous sediment and the Pressure Control Solenoid (PCS) is now collecting ferrous sediment, making it vary from design. For a given current the PCS electromagnet is stronger, causing the line pressure to be less than needed."
The exernal filter is added insurance!