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holden V8 into gq help

Tech Talk for Nissan owners.

Moderators: toaddog, V8Patrol

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Posts: 111
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holden V8 into gq help

Post by kegz »

hey guys
ive decided to put an injected 5 litre V8 out of a vr commodore into my gq using a marks kit,

how did you go? was it hard, any big dramas and how was the result cheers
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Re: holden V8 into gq help

Post by DA DUDE »

kegz wrote:hey guys
ive decided to put an injected 5 litre V8 out of a vr commodore into my gq using a marks kit,

how did you go? was it hard, any big dramas and how was the result cheers

im running a 5ltr and a t/700 in my GU patrol motor coming out next week to be replace with 355 injected.

1) what gearbox are you using if you going auto go the vn or vp as there is no computer for the box. you will need a speed senor you also need a kit to swap the output shaft to fit transfer box from marks
2) you can use the hsv header
shit happen's & ass holes cause it
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re

Post by kegz »

thanks mate this is the sort of thing im interested in, im using patrol manual with commodore clutch.

as for exhaust i was going to use standard manifolds but i might try find some hsv headers.

how did you go with engine mounts?
Posts: 111
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Post by kegz »

what sump did you use? hq holden?
Posts: 252
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Post by Hulksta »

kegz wrote:what sump did you use? hq holden?
Yep its early holden rear sump you need
THE HULKSTA.... Built by Nissan, Rebadged by Ford, Perfected by Me!
Posts: 111
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re

Post by kegz »

thanks hulksta.

done most of the wiring now.
what fuel pump is the cheapest and best option? does a surge tank need to be used?

last question. marks adapter websiite only list a speed sensor for a cable driven speedo or (auto computer) can or does it not provide the correct info?
Posts: 252
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Re: re

Post by Hulksta »

kegz wrote:thanks hulksta.

done most of the wiring now.
what fuel pump is the cheapest and best option? does a surge tank need to be used?

last question. marks adapter websiite only list a speed sensor for a cable driven speedo or (auto computer) can or does it not provide the correct info?
Im using a lift pump & surge tank from marks... for the main pump i'll be using bosch 044 /700hp rating... are you using a stock 5L? if so all you will need is the stock holden v8 pump

Not sure on the speed sensor, i havent got the far yet...

Do you have a set of headers yet? if not ive a good pair i'll sell ya... im not using them because i made a custom set of headers ;)
THE HULKSTA.... Built by Nissan, Rebadged by Ford, Perfected by Me!
Posts: 111
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re

Post by kegz »

i might use the marks lift and surge and just an inline walbro.

no i dont pm me price of ph:0412191871 very interested. these are the hsv ones yeh? did they fit in without mod?
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Re: re

Post by Hulksta »

kegz wrote:i might use the marks lift and surge and just an inline walbro.

no i dont pm me price of ph:0412191871 very interested. these are the hsv ones yeh? did they fit in without mod?
There the ones everyboby uses for the GQ (top header in the pic is the p/side i dont have a pic of the other side but can get if you want)

Image

They bolt straight up, then you just get a exhaust shop to make the rest of the system... easy as that ;)
THE HULKSTA.... Built by Nissan, Rebadged by Ford, Perfected by Me!
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Post by jaybags »

No offence to Marks adaptors but source your own surge tank and lift pump. I also have done the conversion with Nissan 5spd and most people i spoke to told me this. It is cheaper and you end up with a bigger surge tank.
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Re: re

Post by Sandy Rut »

Hulksta wrote: There the ones everyboby uses for the GQ (top header in the pic is the p/side i dont have a pic of the other side but can get if you want)
They bolt straight up, then you just get a exhaust shop to make the rest of the system... easy as that ;)
Is there a bung for the o2 sensor in those?

Do you have a part # or know exactly what model those headers are off/ suit so I can order from somewhere?

What is the common route of the drivers side with those type?
-Under sump and down the l/h side of chassis?
-Over top of bellhousing?
-Above front driveshaft somehow & along drivers side chassis rail?

I am starting my engine install (bog stock VN 304 into GQ 5spd w/ 2inch body lift) late this month too so any advice would be timely!

Up until now plan was twin 2 1/4 using std vn manifolds (as in top of pic) with drivers side to route under sump & both down left chassis rail.
I live 56756795km's from a muffler place so was just gonna weld it up myself with stainless bends & pipe on the MIG
Last edited by Sandy Rut on Tue Jan 06, 2009 10:37 am, edited 1 time in total.
[quote="Yom"]
Some people believe GQ's are overhyped shitboxes.[/quote]
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Re: re

Post by bogged »

Surely the V8 into GQ could have its own section now, or its own bible??
Second most common thread in recent times? :)
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re

Post by kegz »

yes i agree its a common conversion. any input would be great though.

sandy rut, if you use the marks adapter kit suposidly the power steering pump will hit the body if you have a body lift.
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Post by Rhysta »

mine just cleared with body lift..

guard needed some gentle persuading but..

Ive got a fair few parts at home for this engine swap marks loom gearbox adapter etc etc if anyone wants something
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Re: re

Post by Hulksta »

Sandy Rut wrote:
Hulksta wrote: There the ones everyboby uses for the GQ (top header in the pic is the p/side i dont have a pic of the other side but can get if you want)
They bolt straight up, then you just get a exhaust shop to make the rest of the system... easy as that ;)
Is there a bung for the o2 sensor in those?

Do you have a part # or know exactly what model those headers are off/ suit so I can order from somewhere?

What is the common route of the drivers side with those type?
-Under sump and down the l/h side of chassis?
-Over top of bellhousing?
-Above front driveshaft somehow & along drivers side chassis rail?

I am starting my engine install (bog stock VN 304 into GQ 5spd w/ 2inch body lift) late this month too so any advice would be timely!

Up until now plan was twin 2 1/4 using std vn manifolds (as in top of pic) with drivers side to route under sump & both down left chassis rail.
I live 56756795km's from a muffler place so was just gonna weld it up myself with stainless bends & pipe on the MIG
Which header are you asking about? If its the bottom one thats one of the headers ive made myself and it for a custom dual setup one down each side of the chassis...
Image

Image

Image
THE HULKSTA.... Built by Nissan, Rebadged by Ford, Perfected by Me!
Posts: 325
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Re: re

Post by Sandy Rut »

Hulksta wrote:Which header are you asking about? If its the bottom one thats one of the headers ive made myself and it for a custom dual setup one down each side of the chassis...
Ah righto, yeah I took it that the bottom ones were the "hsv ones" Kegz asked you about, with the top one just being a stocker... :oops: All makes sence now...
Anyway those headers you built look tops you must be happy with how they turned out :cool:
[quote="Yom"]
Some people believe GQ's are overhyped shitboxes.[/quote]
Posts: 325
Joined: Sat Aug 07, 2004 7:19 pm
Location: Newcastle

Re: re

Post by Sandy Rut »

kegz wrote: sandy rut, if you use the marks adapter kit suposidly the power steering pump will hit the body if you have a body lift.
yeah I have removed heaps of inner guard to fit coilovers and shit. Im expecting the conversion to be an nightmare but pump/ body clearence shouldnt be a hassle - check the pic

Image

Pic is passenger side I know, but both inner guards have been opened up the same.

Can anyone recommend a good budget clutch & flywheel + supplier who is happy to frieght?
From what I have read here & there I will need a GU clutch slave too??
[quote="Yom"]
Some people believe GQ's are overhyped shitboxes.[/quote]
Posts: 45681
Joined: Wed Nov 27, 2002 10:13 am

Re: re

Post by bogged »

Sandy Rut wrote:Can anyone recommend a good budget clutch & flywheel + supplier who is happy to frieght?
http://search.stores.ebay.com.au/NORTHE ... 10QQsofpZ0

they seem $150 cheaper than "This is our cost price mate, shhhhh dont tell anyone" from few other places we tried on GU clutches.
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Re: re

Post by Sandy Rut »

bogged wrote: http://search.stores.ebay.com.au/NORTHE ... 10QQsofpZ0

they seem $150 cheaper than "This is our cost price mate, shhhhh dont tell anyone" from few other places we tried on GU clutches.
good link - thanks
[quote="Yom"]
Some people believe GQ's are overhyped shitboxes.[/quote]
Posts: 45
Joined: Wed Oct 04, 2006 2:08 pm
Location: WA

Post by neRok »

i havent done this conversion but i've got a v8 vn so thought i would make some comments, hopefully they help :?

i dont know if speedo problems where mentioned (you probably just stick with the gq dash anyway) but my commo is manual with 4.11 diff gears (standard 3.08) so this puts the speedo out heaps. there is a few wires that come off the gearbox and go to the computer. i got a little unit that you wire inline with some of these wires and it has a little dial on it that you turn to modify the 'pulses' or whatever that go to the computer, so you drive along side someone/use gps/ get on a dyno, and turn the little dial until your speedo is correct. i've been using this for years with no problems. not sure where the unit came from, but i think jaycar have a little kit that does this. also, i am not positive if this would work with auto's, but i think it would with the 'mechanical' autos, not too sure about the 'electronic'.

with the fuel pumps, the vn v8's run a duel pump configuration, a 'regular' lift pump inside the fuel tank which feeds to a big external pump which sends the fuel to the motor. these pumps worked fine on my car and it was supercharged and putting 360hp to the wheels :lol:. only time i had an issue was when i had less that 1/4 tank and was taking off fast/going round corners hard, so thats just the fuel surge. so if you have a vn donor car, you could use the lift pump to a surge tank (just go ebay or even get on a commodore/ricer forum and get a second hand one) and use the big pump from there on. i have since changed to a single intank walbro (one of the pumps died) and these work great. i dont get fuel surge problems anymore, but its not supercharged either so doesnt need as much fuel. vp+ changed to a single intank pump i am pretty sure.

with the power steering pump hitting the body when its got a body lift, pretty sure that some of the early commodores (vb-h maybe) or maybe the kingswoods had the alternator mounted on the drivers side. so you might be able to swap sides, make a new p/s bracket and get it out of the way somehow?

with the exhaust, twin to single works fine, my car is twin 2.5 to single 3. has a single muffler (after join) and resonator, still loud as even with the blower off, its only got flat top pistons and a tune as is.
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Location: Ferntree Gully. Melbourne.

Post by Rhysta »

The marks kit bolts into the speedo cable drive on the manual box. then the speedo cable bolts to that. The ECU then plugs into this box which gives it the speed info its easy as.

The exhuast manfifolds you need are a cast vt ser1 pas side and a cast vs drivers side. These clear both the marks engine mounts .
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re

Post by kegz »

yeh i no what your saying about the speedo unit but my car has an electronic speedo unit (no cable) thats what im converned about. cheers
Posts: 325
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Re: re

Post by Sandy Rut »

bogged wrote:
Sandy Rut wrote:Can anyone recommend a good budget clutch & flywheel + supplier who is happy to frieght?
http://search.stores.ebay.com.au/NORTHE ... 10QQsofpZ0

they seem $150 cheaper than "This is our cost price mate, shhhhh dont tell anyone" from few other places we tried on GU clutches.
Got an Exedy dunnydore heavy duty clutch kit (Part #GMK-6334HD) from those dudes $360 delivered overnight to my place in the middle of nowhere :D

Has anyone else used that kit?
If so did the GQ clutch slave work or will I need a GU one (Yes I asked Mark's & they didn't know)?
[quote="Yom"]
Some people believe GQ's are overhyped shitboxes.[/quote]
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