Holden Performance - Holden/GTO specific bolt on mods?

View Full Version : Holden/GTO specific bolt on mods?

11 Bravo

01-04-2003, 06:50 AM

Nine Ball

01-04-2003, 10:50 AM

I'll bet alot of stuff, like headers, won't fit the US version because our steering wheel is on the opposite site and headers have to clear the steering shaft. I wonder if anything else under the hood is rearranged opposite.

The good thing is that all of our internal LS1 modifications will be the same <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

-Tony

XLR8NSS

01-04-2003, 10:56 AM

That's the nice thing about having a big cube motor. You can just take it with you when you get rid whatever vehicle it was in.(suitcase motor) <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> This is assuming you buy another vehicle with a LS1 variant. The GTO is looking like that vehicle. <img border="0" alt="[driving]" title="" src="graemlins/gr_driving3.gif" /> <img border="0" alt="[burn out]" title="" src="graemlins/gr_burnout.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" />

1dirtyZ

01-04-2003, 10:56 AM

tony you are right, the headers won't fit. we tried to order a set for a friend of mine and the header company said that it won't fit.

from what i have seen , the firs mod to do is change the intake tube. it resembles an intake on an lt1 car and breathes through a gap around the headlight.

another thing i noticed is a slight rear end dive upon acceleration, so keep on the look out for suspension mods to help the traction department.

11 Bravo

01-04-2003, 01:02 PM

Doh, I didn't think about the steering shaft. I bet the first shop to make headers will charge like $1500 lol

G-LOCK

01-04-2003, 04:34 PM

<blockquote>quote:<hr />Originally posted by 1dirtyZ:

another thing i noticed is a slight rear end dive upon acceleration, so keep on the look out for suspension mods to help the traction department. <hr /></blockquote>Why wouldn't you want the rear to squat on acceleration? I thought that was called weight transfer?

v8 ute

01-04-2003, 08:55 PM

<blockquote>quote:<hr />Originally posted by G-LOCK:
 <blockquote>quote:<hr />Originally posted by 1dirtyZ:

another thing i noticed is a slight rear end dive upon acceleration, so keep on the look out for suspension mods to help the traction department. <hr /></blockquote>Why wouldn't you want the rear to squat on acceleration? I thought that was called weight transfer? <hr /></blockquote>You are still going to get weight transfer if you don't have the squat.
Squat is just waisting time/energy getting power to the tyres.

1dirtyZ

01-05-2003, 03:26 AM

exactly what v8 ute said!

you actually would want "unsquat" or lift upon accel. that way the rear tires get "pushed" or planted into the ground for more traction.

RUQWIKR

01-05-2003, 06:54 PM

<blockquote>quote:<hr />Originally posted by 1dirtyZ:
 tony you are right, the headers won't fit. we tried to order a set for a friend of mine and the header company said that it won't fit.

from what i have seen , the firs mod to do is change the intake tube. it resembles an intake on an lt1 car and breathes through a gap around the headlight.

another thing i noticed is a slight rear end dive upon acceleration, so keep on the look out for suspension mods to help the traction department. <hr /></blockquote>Don't forget that they sell the Holdens cars w/LS1's in left-hand drive for the Mid East. We should ask some of our fellow guys on this board who have them over there. Chevy sells the cars over there. Not sure if the coupe (Monaro) is sold over there, but they do sell the 4-door (called a Lumina, yeah, not our Lumina). Take care.

Quick Time

01-05-2003, 09:25 PM

<blockquote>quote:<hr />Originally posted by 1dirtyZ:
 tony you are right, the headers won't fit. we tried to order a set for a friend of mine and the header company said that it won't fit.
<hr /></blockquote>Well as soon as i get my hands on a car i will make headers for them. So if anyone wants a set and lives in the ny/nj area contact when you have the car <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

Oh and it wont be $1500 for the headers either.

frcefed98

01-06-2003, 11:29 PM

From the engine compartment pics I see, it looks like a magnacharger will fit in there quite nicely. Hood clearance tho? I don't like the hood anyway VFN should be able to do a fiberglass hood in no time flat
Barry you'll probably charge 1200 for the headers+300 for the ypipe J/K
<img border="0" title="" alt="[Razz]" src="gr_images/icons/tongue.gif" /> <img border="0" title="" alt="[Razz]" src="gr_images/icons/tongue.gif" />
J

strife

01-07-2003, 01:18 AM

<blockquote>quote:<hr />Originally posted by frcefed98:
 From the engine compartment pics I see, it looks like a magnacharger will fit in there quite nicely. Hood clearance tho?
J <hr /></blockquote><img src="http://66.227.86.244/scan.jpg" alt=" - " />

shouldnt be a problem starr performance (efilive people) do an autorotor package now for them

01 SS Jay

01-07-2003, 02:41 PM

What about tuning?

Magnacharger and headers and a nice catback.. that would be the perfect package on that car.

strife

01-07-2003, 06:42 PM

ls1edit is available for the Holdens

SIKLS1

01-13-2003, 02:04 AM

Not as easy with LS1EDIT, as i spoke to Peter Starr about the installation you need to install there programmed PCM on exchanged basis, which has been calibrated correctly, also the car run a 2 bar map sensor, which LS1EDIT can't see, to tune correctly.

SIKLS1

01-19-2003, 03:19 PM

<blockquote>quote:<hr />Originally posted by Nine Ball:
 I'll bet alot of stuff, like headers, won't fit the US version because our steering wheel is on the opposite site and headers have to clear the steering shaft. I wonder if anything else under the hood is rearranged opposite.

The good thing is that all of our internal LS1 modifications will be the same <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

-Tony <hr /></blockquote>You can get the correct header for this car now, with left hand drive, the same car is export to Saudi Arabia.

1dirtyZ

01-19-2003, 07:53 PM

sikls1, do you know the company's name or address?? how much where they?
i need the headers soon!

FACE

01-19-2003, 08:01 PM

Do they have the same rear as a C4 or C5?

1dirtyZ

01-19-2003, 10:12 PM

no, i belive they are different. the corvette has it's tranny in the rear but the GTO will have it up front.

SIKLS1

01-21-2003, 03:56 PM

<blockquote>quote:<hr />Originally posted by 1dirtyZ:
 Sikls1, do you know the company's name or address?? how much where they?
i need the headers soon! <hr /></blockquote>You can use this search engine and find heaps.
http://www.searchme.com.au
type: Extractors, headers
Here a couple of the top of my head:-
http://www.cmsracing.com/index14.html
http://www.speedshop.com.au/pacemaker/pace.htm
http://www.hmheaders.com.au/Monaro%20CV8%2057%20V8.htm
http://www.jet-hot.com.au/jethotdirect.htm#Premium%20Try%20Y%20Headers
You'll need to order the COMMODORE VT-VX 5.7LT GEN III (41MM - 1 5/8'' PRIM.) NEW 4 into 1 JHD5360 $876 but these are heat coated, or the JHD5357 for $764 which at 4 into 2 into 1 extractors, which are headers to you American's.
http://www.dtexhaust.com.au
http://www.exhausttechnology.com.au/home.htm
http://www.capa.com.au
http://www.dtperformance.com.au/ls1overview.htm
http://www.onautos.com.au/shop/pacemaker-hdrs.html
Below is the cost:
Pacemaker Headers $450.00
Product Code: 105
Freight: $16.50 in Australia.
Holden Commodore VT-VX-VU 5.7L Gen 3 and WH Statesman. Manual and Automatic. TRI-Y Design, not heat coated, just heat reduced painted.

Note:Please specify they are for the left hand drive Holden Commodore export oversea.

1dirtyZ

01-21-2003, 04:07 PM

i can't thank you enough!

SIKLS1

01-21-2003, 04:18 PM

Here and topic on one of our Oz forum's.
http://www.ls1.com.au/forum/showthread.php?s=&threadid=7062&highlight=EXHAUST
Noticed the differenet from factory.!!!
Here a few more to look at.
http://www.darrendifilippo.com.au/
This company make extractor's for the LS1 Gen 3 engine just email them, as there not show on they site.
http://www.advanceheaders.com.au/
This company you need to order A316.

Personally most of the Guy's here have tested all of them, and the best all round headers are the Pacemakers.

strife

01-22-2003, 02:57 PM

didnt the difilipos come up better on plan b testing ?

SIKLS1

01-22-2003, 07:54 PM

<blockquote>quote:<hr />Originally posted by strife:
 didnt the difilipos come up better on plan b testing ? <hr /></blockquote>I think on a Head and Cam package the DF made better top end power figures.
Pacemakers are for the N/a application to mild tuned cars.

Tomcat

01-23-2003, 07:47 AM

<blockquote>quote:<hr />Not as easy with LS1EDIT, as i spoke to Peter Starr about the installation you need to install there programmed PCM on exchanged basis, which has been calibrated correctly, also the car run a 2 bar map sensor, which LS1EDIT can't see, to tune correctly. <hr /></blockquote>Edit can do the mapping on this vehicle if you know how , did it last week and picked up 100+ rwkw over its pevous tune <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

Di filippos headers are the dux guts on a Monaro , so far they have outperformed on anything from a stocker to a full big cube motor , good alround header for both low down torque and high rpm power.

That blown autorotor setup was awesome to drive on the streets after a tune , just need to work out how to get one for my Monaro

SIKLS1

01-23-2003, 01:47 PM

Great to hear there Delco, you got you head wrapped around LS1EDIT so quickly. <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" />

Brains

01-27-2003, 02:17 AM

How strong is the rear end in this thing? Will it stand up to a 'little' abuse? If I end up with a GTO, the first thing I'm gonna want to do is slap heads/cam/converter on it <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

11 Bravo

01-31-2003, 04:44 PM

The VT/VX exhaust system looks very sweet.

Tomcat

02-02-2003, 07:18 AM

Great to hear there Delco, you got you head wrapped around LS1EDIT so quickly.
I dont just use LS1edit , I have been playing with Delco's for near on 10 years now so the LS1pcm is just a evolution of the same PCM coding.

LS1EDIT has just made a easier interface for the layman to use <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
The PCM has a lot more stuff in there you dont get to see with edit <img border="0" title="" alt="[Razz]" src="gr_images/icons/tongue.gif" /> , blower code is hidden deep in there as std

SIKLS1

02-03-2003, 04:17 AM

<blockquote>quote:<hr />Originally posted by Brains:
 How strong is the rear end in this thing? Will it stand up to a 'little' abuse? If I end up with a GTO, the first thing I'm gonna want to do is slap heads/cam/converter on it <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <hr /></blockquote>LSD Diff are renown to be clunky with extra load on them, but they end up been single wheels after a while.
My car have 288RWHP and is on it 2nd diff, the first one pack it in after 30,000kays.
This 2nd diff which is a 3.46 up from 3.07 stock is starting to clunk now at 50,000kays, with this extra horsepower.
Common fault on the Holden Commodore here, you abuse the car, the frist think that goes is the clutch follow by the diff.

CORSA

08-19-2004, 10:41 AM

I posted a few monts ago and got no response. Before the year is out, I will have a '04 GTO. It will be modded <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> Are there any shops that sell parts for the Holden like headers, intake, catback, ect.? I imagine the GTO will be able to use the same stuff. Anyone?
As far as exhaust systems are concerned Corsa is on top of it! Corsa has an exhaust that wakes up the GTO! Makes it sound like the muscle car it is!!! Go to www.corsaperf.com