Holden v6 for stockcar (Read 5,298 times)

[ross]

Just like to know if there is any model of engine ie year, that is better than others, is there any with better gear in one from another, like rockers, ignition etc, and do many chaps run them standard, just keen to get some info before I talk to an engine builder so I don't sound like a total fool. Thanks.

[7g stocky]

hey i run a standard holden v6 the vn model and it goes alright not gonna win nz title but it shouldnt with the engines that are out there i have heard the vp holden motors do seem to preform betta though hope this helps

[ross]

Cool thanks, any help is good help.

[mrelshauno]

The VS is the way to go

[346 tri-rail]

Hey,Ross i run a standard vn v6,what a huge difference compered to a rover,i think the main thing is to get the computer (ignition side of things) wiring right.then gear the car to suit,for max revs,these engines dont rev very high in standard form.For me it was the best move i could have made,next season i'll be building a better enging ,vr model.hope this helps glen 346h

[madphil]

From memory, and I am quite possibly wrong, there was no difference between the vn and vp except the inleft manifold has the water inlet on the front of the vp and back of the vn. So depending on where your radiator hoses would depend which is the better choice.

I think there was a difference in the number of bolts at the end of the crank between the manual and automatic engines.

The VR heads were much better flowing than the vn and vp and the std vr exhaust manifolds are much better.

I also think that the VN and VP ran a slightly higher compression that the later models so I know many were running vn/vp blocks with vr heads.

Oh changing the valve springs is a must for these engines, espcially if you want to rev them over 6000 as the std springs get soft once hot. Then once soft the engine just wont rev properly.

[tank11]

NTHB146,
You say better than the Rover. How? Which, 3.5 or 3.9? Worked or standard? Some info would be appreciated, as I'm looking down the rover line. Any hp/torque figures, weight, etc. Thanks.

[346 tri-rail]

Hi tank11,i used to run a standard 3.5 rover then built a good engine (good heads,custom cam,10 -1 comp,electronic ignition etc) i dont know hp /torque figures of hand but the track time has apered to be better with the holden(not baging the rover-but for me i would never look back)i've spoken to a engine builder up north and he recons the performance potential for the holden far outways the rover.The holden to me apears to have a better torque curve ,better lift out of the corners and pushing power,this could just be a false sense as its a new chassis this season as well.good luck with the rover people are getting good results eg:mark powell 99H,for me its about $ for best hp gain thanks hope this helps.where r u based ?

[346 tri-rail]

Sorry tank11,forgot about weight,i worked out a difference of about 55kg holden heavier,i could be wrong

[observer]

Morning Team,

good discussion for the aspiring stockcar driver. Maybe might be good to get a run down on how to get the carb on the Manifold, and indeed what manifold you need for this motor?

I have heard that the supercharged v6 has the best manifold for the job. Anyone else got any ideas? Can you adpat the standard manifold on the v6?

Cheers

The Observer

[346 tri-rail]

Hi i got a standard vn manifold modified (steel surgeon in auck ,carlos chesnut) it seem to work very well.If you had acess to a tig/mig welder and could weld alloy,you could do the mod yourself,easy once youv seen the finished product,changing from the rover to holden i had to increase the jet size by 4 ,same carb as used on rover(holley)so just shows better gas velosity on holden basic rule is more fuel/air more power very basic rule

[observer]

Cheers for that - not to expensive? Would be cool to see if any one has any pictures of the modifacations required to the inlet manifold.

cheers

[tank11]

We are looking at a 3.9 Marshy, should be just about finished now. The weight is going to be a big factor at 55kg?. This car is known for being on a diet. Gis is home base and will be running as stockcar.

[bonezman]

Well I've been looking at my options to change my ex chev v8 car to something more cost effective and reading this tells me the Holden v6 is a good way to go, and theres plenty of them, just woundering if anyone nows the weight difference between the 2 as complete ready to go units, it'll give me an idea how much I can add to the frame for stength and ballist.

[foreyes]

one advantage the falcon motors have over the v6, is mounting points.

[nzf2stocks.]

If you look at all the stockcars that qualify for the big meetings you would find that out of 26, 16 of them would be Ford sixes, 6 would be V6 holdens, and maybee 1 rover would make it through. This years NZ champs would be no different exept a holden won! Performance per dollar the ford has to be on top, but I still run a rover because it sounds better.

[Deleted]

G'day all, is there a difference between the computers on the manual and auto v6, and if so, can you use a manual comp on an adapted engine? cheers

[carwrecker]

In the vn and VP the computer is the same for manual and auto

[smokey]

brian hartley did our computer loom, he modifies a holden loom and at the end of the day all you have to do is wire up two wires to your power supply, and it works

[Ricoshea]

there is a company in auckland who supplies hartley with computers and looms.