Holden intake manifold diagrams and info

[97rs4life]

Alright as some of you know I am working on using the holden intake manifolds on my car. I got in contact with a person in australia and was able to get the 95-97 Commodore VS repair manual mailed to me on a CD. The CD breaks it all done really nice for us to see what goes to where on the manifolds.

Now just so you know there are two different styles of holden intakes that fit on our block. The earlier version is the 95-97 VS version. Then there is the newer version from 98+ that is in ecotec commodores. The VS version does not have the hole for EGR and uses a oring gasket between the upper and lower intakes. The VS version also has a hump just inside the inlet of the upper manifold that restricts some flow. To combat this you can easily dremel it smooth so there is no hump. The newer style has EGR and also a different PCV groove between the intakes. Another difference is that the VS version is slightly shorter in height which is nice for us as it is a close fit under our cowl. The taller version if you can make it work would actually be better as the runner length is slightly longer.

Here are some helpful diagrams of the manifolds and the stock tb hookups

[ssms5411]

Re: Holden intake manifold diagrams and info

Good info, does it have part #'s to?

[97rs4life]

Re: Holden intake manifold diagrams and info

Good info, does it have part #'s to?

Nope, no part numbers though.

[ssms5411]

Re: Holden intake manifold diagrams and info

That sucks. Nice diagrams, may come in handy sometime. Should make a sticky in case someone is looking for pics. Of course after you run some 11's with your setup( which you better) people will be asking alot of more questions.

[v6mOtOrhEAdftOp]

Re: Holden intake manifold diagrams and info

Ya I can't wait, I know you can do it :)

[greasemonkey]

Re: Holden intake manifold diagrams and info

Just curious whats the benefit over stock? It looks like the runners are longer and wider, but that could be the picture.

[97rs4life]

Re: Holden intake manifold diagrams and info

Just curious whats the benefit over stock? It looks like the runners are longer and wider, but that could be the picture.

yes longer runners indeed. Means more power in theory. Whenever you look at aftermarket it is all about runner length and design. And when you look at our stocker it sucks in design and could have been done way better

[Gatt9]

Re: Holden intake manifold diagrams and info

yes longer runners indeed. Means more power in theory. Whenever you look at aftermarket it is all about runner length and design. And when you look at our stocker it sucks in design and could have been done way better

Is this the limited run you were talking about a few weeks ago(IIRC)? I've been kinda wondering about our intakes, but the little bit of searching I've done is just turning up LS1 intakes.

[greasemonkey]

Re: Holden intake manifold diagrams and info

I'm gonna be porting up my stock intake, since I can't afford something nicer. Steady hand with a dremel (lightly!) goes a long way.