4.5 Exhaust

[BigRAWesty]

As I said just soup up the 4.5. You can get slightly better fuel efficiency if done right, but if you want to go ls1 I guess fuel is not a problem.

The 4.5 is a torque monster once done right. They'll strip 37" tyres to wire..
And there is no engineering issues to fret about.

Kallen Westbrook
Owner of
Westy's Accessories

[Thirsty]

4.5L GU's are gutless. I wouldn't bother with a turbo. although i'm not a turbo fan. LS1-2 it, you should be happy with it then.

[Bloodyaussie]

You should just be happy to have a nice car full stop........... !!!!!!!!!!!!!!!!!!!!!

[BearGUST]

Gen4's are great engines. Heaps of torque everywhere in the rev range, very smooth power delivery for 4WDing and also quite fuel efficient for what they are, maybe one day!

[Alitis007]

Been there done that with the 350 Chev conversion. NEVER again. Forget the 350 diesel V8 too, hopeless engine. Stick with what you have. Look at YTUBE and see what the Saudis can do to a 4.5 or 4.8 and a turbo. IT WILL BLOW YOUR MIND. mind you fuels only 13 cents a litre. I have mates with 4.5 and 4.8 GQ utes that pull a 14 sec 1/4 mile and have 235 rwKw, Ice, ice baby cant touch this. These utes fly

Can i ask why you wouldn't bother with a 350?? Considering a 5.7ltr is 350 ci and you had a carby conpaired to EFI and last year i went to eden from melbourne my slightly tickled wh stato for $40 in fuel and its weighs roughly 1800kgs and makes 232.2rwkw on 20" wheels in 4th gear(1:1ratio)

[Alitis007]

As I said just soup up the 4.5. You can get slightly better fuel efficiency if done right, but if you want to go ls1 I guess fuel is not a problem.

The 4.5 is a torque monster once done right. They'll strip 37" tyres to wire..
And there is no engineering issues to fret about.

Kallen Westbrook
Owner of
Westy's Accessories

Fuel will improve with the ls1 in the gu I THINK, i've had turbos before and when the boost goes up the fuel goes down nothing you can do about it. This is my daily and holiday car, i have a toy its a 500hp rotary and if i drive that daily it will cost me less to run then the 4.5 by about $30 lol not much but at least it can fry tires at 100k's!

[Alitis007]

4.5L GU's are gutless. I wouldn't bother with a turbo. although i'm not a turbo fan. LS1-2 it, you should be happy with it then.

I was surprised with mine, if i manually selected 2nd gear n held it flat to the floor i could over take up hills over 100km/h

[Alitis007]

You should just be happy to have a nice car full stop........... !!!!!!!!!!!!!!!!!!!!!

The novelty quickly disappears when you see my weekly fuel bill and thats driving like a granny!!

[Alitis007]

Gen4's are great engines. Heaps of torque everywhere in the rev range, very smooth power delivery for 4WDing and also quite fuel efficient for what they are, maybe one day!

I already have a gen3 sitting in a wreck i bought and they are fairly close with the right mods done to the gen3

[Bloodyaussie]

The novelty quickly disappears when you see my weekly fuel bill and thats driving like a granny!!

Mate I drive all week in my petrol GQ so know whats involved , I had a Rodeo 2007 model and that thing drank like an Irishman out on a bucks party!!!