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V8 Performance Parts

troytroy2

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Steve any further word on the LS1 higher ratio roller rockers?
 

MACE

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"inconjunction with a ported manifold?" What do you mean by that? I know that alot of aftermarket 80mm Throttle Bodies for LS1's have reducers that connect between the larger throttlebody and the Inlet Manifold.....are you saying that you can attack the plastic inlet manifold with a dremel or something?

Curious....as I've always wondered how effective these things are when it still reduces to the 78mm(?) odd inlet manifold anyway.

Very curious...

Cheers

Troy
Hey Troy,

The actually throat diameter of the manifold is 75mm on a LS1/LS6 manifold. While the throat diamerter of the factory throttle body is 72mm (the butterfly itself is 75mm like the manifold but there is a 72mm venturi in front of it). If you're going to install a throttle body larger then 75mm then I would highly recommend porting out the manifold to suit, using something like a dremel. While you've got the manifold off you can always port the runners a little as well :)

Steve any further word on the LS1 higher ratio roller rockers?
We've tested the 2.0:1 ratio and they seem to make around 5rwkw over the 1.9's. Didn't like the 2.1:'s though as the gains were less then the 2.0:1s. Note that the 2.0's require cylinder head mods to fit plus we won't consider selling these for at least 6-12 months of field testing.

Cheers
Steve
 

troytroy2

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Hey Troy,

The actually throat diameter of the manifold is 75mm on a LS1/LS6 manifold. While the throat diamerter of the factory throttle body is 72mm (the butterfly itself is 75mm like the manifold but there is a 72mm venturi in front of it). If you're going to install a throttle body larger then 75mm then I would highly recommend porting out the manifold to suit, using something like a dremel. While you've got the manifold off you can always port the runners a little as well :)

We've tested the 2.0:1 ratio and they seem to make around 5rwkw over the 1.9's. Didn't like the 2.1:'s though as the gains were less then the 2.0:1s. Note that the 2.0's require cylinder head mods to fit plus we won't consider selling these for at least 6-12 months of field testing.

Cheers
Steve
Maybe one day when I get bored I might pull the inlet manifold off and dremel away (and give it a good clean whilst it's out)..........it's probably a pain in the arrrse job to take the inlet manifold off no doubt?

Fair enough about field testing the 2.0's. I've pretty well found what valve springs I'll get, now I got to justify the rockers to the minister for war and finance....
 

MACE

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Maybe one day when I get bored I might pull the inlet manifold off and dremel away (and give it a good clean whilst it's out)..........it's probably a pain in the arrrse job to take the inlet manifold off no doubt?

Fair enough about field testing the 2.0's. I've pretty well found what valve springs I'll get, now I got to justify the rockers to the minister for war and finance....
Taking the manifold will be around the hour mark. Removing, porting and installing the manifold should take around half a day to a day to do if you've never done it before.

If you have any more questions please don't hesitate to ask.

Cheers
Steve
 

keith reed

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I own a vb commodore fitted with a 355i motor. Sadly I don't have a very good cold air intake. The one I did have was the factory cold air intake that went over the radiator. I had to take it off as it was to hard to open the bonnet. Do you think the one you make for the vn-vt would fit or could be made to fit without to much difficulty?
 

MACE

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I own a vb commodore fitted with a 355i motor. Sadly I don't have a very good cold air intake. The one I did have was the factory cold air intake that went over the radiator. I had to take it off as it was to hard to open the bonnet. Do you think the one you make for the vn-vt would fit or could be made to fit without to much difficulty?
We do have a CAI kit to suit a VB-VL commodores as shown in the attached pics. Given you have a VB commodore though you'll need to drill into to the body work to fit the box, unlike the VL's, which already have provision for a factory air filter box. In your case what we could supply you with is a VN 5L cai kit and replace the the lid with a VL one.

If you have any more questions please don't hesitate to ask.

Cheers
Steve
 

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MAHOOVKV8

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Hi Mace i was wondering if i order this part (HOLDEN PERFORMANCE MEMCALS TO SUIT VN-VP V6/V8 MANUAL-AUTO) of you guys can you suit it to a vp 5l with pacemaker extractors with a 2 1/2 inch system, sv5000 cam and 9.8:1 comp and is a automatic, or are your chips pre set. Will they make a decent different on fuel economy and performance.
 

MACE

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Hi Mace i was wondering if i order this part (HOLDEN PERFORMANCE MEMCALS TO SUIT VN-VP V6/V8 MANUAL-AUTO) of you guys can you suit it to a vp 5l with pacemaker extractors with a 2 1/2 inch system, sv5000 cam and 9.8:1 comp and is a automatic, or are your chips pre set. Will they make a decent different on fuel economy and performance.
Sadly we can't MAHOOVKV8. We only offer memcal to suit basic mods and our own cams. If you have any more questions please don't hesitate to ask.

Kindest Regards,
Steve
 

04VYSS

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Just throwin a question out there...
I currently have a SS Inductions OTR CAI w/- K&N panel filter through to stock TB (engine internals are stock at the moment), with having my exhaust re-done (pacies / high flow cat etc..) recently would you think there would be any improvement in installing your MACE CAI (which I really like the look of) along with the MACE 70mm TB??
Any input is appreciated
 

NEDWOB

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i have on my car pacies,magnaflow cat,2.5" redback system with the mace cai box and there 70mm t/b and i used to have the otr style cai and went with mace style cai and there is a better improvement with the mace one, you wont regret it and there better for stop start traffic with there heat resistant box and looks way neater in the bay
 

04VYSS

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P.S.- I already have had stage 2 shift kit fitted too, I've read in other threads here that some guys have problems with shift timing after installing the 70mm TB... I assume this will be no issue for me.
 

MACE

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04VYSS

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No worries Steve, sold.
If ok I'll PM you a bit later this week to order both & make payment.
Cheers.
 

04VYSS

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Alright... ordered both now and will keep everyone posted with the progress / finished product.

I'll even post some pikkies too :smoking:
 

04VYSS

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Ok sorry for the delay yes it's been a little while - I installed the TB and CAI about four weekends ago now and I am highly impressed!! - As I said I'll put some pikkies up when work becomes a little less hectic but so far sooo very very good!!
Throttle response is instant and pickup is just insane!! - runs with a nice induction sound now (much better than the SS Ind. intake I had on previously)...
For the money spent the returns in performance are awesome, I would strongly suggest that anyone thinking of going down the same route as me to DO IT!! - Installation of both the TB and CAI was piss easy..
I'll be back :rockon:
 
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