Monaro HP/YEAR question

[VUKK]

Hi all

I am trying to find out what is the actual engine difference between
2004 5.7 328hp,
2004 5.7 381hp VXR
2005 5.7 349hp.

Thanks!

[wortec1]

VUKK said:

Hi all

I am trying to find out what is the actual engine difference between
2004 5.7 328hp,
2004 5.7 381hp VXR
2005 5.7 349hp.

Thanks!

All the same base engine (LS1) Power changes are via Intake, exhaust and tune changes.

[VUKK]

Thanks for the quick answer!

So to make 328hp 2004 monaro have VXR power will need exhaust, induction and a remap?

I am asking because I am looking into buying a 2004 but want more power cheap.

Thanks

[wortec1]

VUKK said:

Thanks for the quick answer!

So to make 328hp 2004 monaro have VXR power will need exhaust, induction and a remap?

I am asking because I am looking into buying a 2004 but want more power cheap.

Thanks

From 2004 CV8 to 2004 VXR you need CAI, Maf pipe, short headers, exhaust and map

[the muppet]

wortec1 said:

VUKK said:

Thanks for the quick answer!

So to make 328hp 2004 monaro have VXR power will need exhaust, induction and a remap?

I am asking because I am looking into buying a 2004 but want more power cheap.

Thanks

From 2004 CV8 to 2004 VXR you need CAI, Maf pipe, short headers, exhaust and map

And 3.7 diff. I thought the cam was different too??

[wortec1]

3.73 Diff adds no power......

Cam is the same.......

[the muppet]

wortec1 said:

3.73 Diff adds no power......

Cam is the same.......

I stand corrected

[VUKK]

I am not clued up with the difs yet.

Does the vxr diff make the gears longer or shorter?

[the muppet]

VUKK said:

I am not clued up with the difs yet.

Does the vxr diff make the gears longer or shorter?

Shorter, ie sacrifices top speed for acceleration. You'd be hard pushed to notice the difference imho

[VUKK]

Thats ok then, I don't have to bother with the diff.

Thanks

[wortec1]

As the man says hard to notice unless you have driven hundreds of Monaros......

3.91 is a good upgrade on lower powered Monaro's (400hp)

[anonymous-user]

What about 600hp at the wheels? The gearing on my VZ CV8 is still too high and I think would benefit from shorter ratios. Any ideas short of changing the gearbox?

[drew9781vuss]

wortec1 said:

VUKK said:

Thanks for the quick answer!

So to make 328hp 2004 monaro have VXR power will need exhaust, induction and a remap?

I am asking because I am looking into buying a 2004 but want more power cheap.

Thanks

From 2004 CV8 to 2004 VXR you need CAI, Maf pipe, short headers, exhaust and map

whats a rough price on having all this done

[ringram]

No point, just do proper headers etc.
Ideally an otrcai too. Nobody mods to stock level!

[wortec1]

drew9781vuss said:

wortec1 said:

VUKK said:

Thanks for the quick answer!

So to make 328hp 2004 monaro have VXR power will need exhaust, induction and a remap?

I am asking because I am looking into buying a 2004 but want more power cheap.

Thanks

From 2004 CV8 to 2004 VXR you need CAI, Maf pipe, short headers, exhaust and map

whats a rough price on having all this done

We dont supply a kit of standard parts BUT we supply better parts in our "Performance pac"

Prices are on the web site ....www.wortec.co.uk

And all parts are available supply only if you are handy with the spaners

Edited by wortec1 on Friday 9th January 19:52

[drew9781vuss]

done four years on the spanners so could handle that.cheers.

[the muppet]

I'll recommend a wortec tune. It woke up my 5.7 vxr. Catback gives loads of burble and pop pleasure too lol

[anonymous-user]

I recommend you get your car put on a dyno and get an expert to tune a few choice modifications.

Edited by anonymous-user on Friday 9th January 22:13

[MyM8V8]

wortec1 said:

As the man says hard to notice unless you have driven hundreds of Monaros......

3.91 is a good upgrade on lower powered Monaro's (400hp)

Any 3.91's around at a reasonable price?

[doleboy]

wormus said:

What about 600hp at the wheels? The gearing on my VZ CV8 is still too high and I think would benefit from shorter ratios. Any ideas short of changing the gearbox?

I'm sure that wasn't the first thought that crossed the mind of that BMW driver behind you the other day