12.3 Stock Converter

[APS Fston]

Didnt think there was any need in posting this in the past but in reading other workshops threads, and how everyone's interested in stock bolt on with all these records that are being claimed, we have a customers car that ran 12.3 @ 112mph running stock converter, full interior and pump fuel. After fitting a 3000 stall converter with no other changes, we only improved to a 12.1, but with a lousy 60ft time of 1.87.

So I think the record for stock converter car is 12.3, which we don't mind holding.

Car set-up when it ran 12.3
Bolt on only
Di Filippo 4 into 1 extractors
Race rear system
4.11 diff gears
Pump fuel
OTRCAI
Tailgate and body all intact
235 x 15 M/T Drag radials at rear, stock wheels on front
Stock auto
Stock converter
Stock valve springs

It has now had valve springs upgraded and we are thinking of running it with full slicks and front runners. We have made a lot of other improvements to the throttle body, and its slowly getting more rwkw on the dyno.

We look forward to getting this car to Calder, Its a shame we couldnt go tonight, its great weather for drag racing. :driving:

Mick

[BAD355]

Didnt think there was any need in posting this in the past but in reading other workshops threads, and how everyone's interested in stock bolt on with all these records that are being claimed, we have a customers car that ran 12.3 @ 112mph running stock converter, full interior and pump fuel. After fitting a 3000 stall converter with no other changes, we only improved to a 12.1, but with a lousy 60ft time of 1.87.

So I think the record for stock converter car is 12.3, which we don't mind holding.

Car set-up when it ran 12.3
Bolt on only
Di Filippo 4 into 1 extractors
Race rear system
4.11 diff gears
Pump fuel
OTRCAI
Tailgate and body all intact
235 x 15 M/T Drag radials at rear, stock wheels on front
Stock auto
Stock converter
Stock valve springs

It has now had valve springs upgraded and we are thinking of running it with full slicks and front runners. We have made a lot of other improvements to the throttle body, and its slowly getting more rwkw on the dyno.

We look forward to getting this car to Calder, Its a shame we couldnt go tonight, its great weather for drag racing. :driving:

Mick

Great work guys, that is damn quick with the std converter :)

What model Ute are we talking here?

What about the TB, is there much gains to be seen there? Is it a modded std TB or an aftermaket jobbie? What mods are you doing to these, I presume it is just the run of the mill bore, port and polish etc?

[Oztrack Tuning]

Can you share the full timeslip for the 12.3?

Also what weight was the car with driver?

Its a good run.

[APS Fston]

Great work guys, that is damn quick with the std converter :)

What model Ute are we talking here?

What about the TB, is there much gains to be seen there? Is it a modded std TB or an aftermaket jobbie? What mods are you doing to these, I presume it is just the run of the mill bore, port and polish etc?

We are still working on our 90mm throttle body but on this car we have just modified the shaft and opening also it is running one of our manifolds.

[APS Fston]

Can you share the full timeslip for the 12.3?

Also what weight was the car with driver?

Its a good run.

I will get the time slips from the customers and post it up as soon as possible.
This was running in full street trim weight.

[StevieD]

When you say the car is running one of your manifolds, what do you mean?

What is different about 'your manifold'?

Thanks

[APS Fston]

When you say the car is running one of your manifolds, what do you mean?

What is different about 'your manifold'?

Thanks

They are a LS2 manifold with allot of time on a flow bench modifying the plenum with devcon if that’s what they call the product and we have had good results on every engine we fit these to bolt on, stroker or head and cam packages.

[VILLAIN]

But if you change the intake manifold and add a 90mm throttle body dosen't that then make the car not a true bolt on?

[APS Fston]

But if you change the intake manifold and add a 90mm throttle body dosen't that then make the car not a true bolt on?

I don’t know who make up the rules for all these stock bolt on classes but we are only doing what we understand as Bolt ons, manifolds and throttle bodies are Bolt on to my unstanding.
Don’t forget about the first LS1 engines with the LS1 manifolds on them and every body was bolting on LS6 manifolds that came out later...
As for throttle bodies this car is still running the standard throttle body but with machining and honing.
Work shops have been fitting 84 and 90mm throttle bodies for years and at the nationals last year nearly every car had modified or bigger throttle bodies fitted to there car running in the Bolt on class.
These LS2 manifolds are a GM part.
I have never understood why people have been fitting anything bigger than an 80 or 84mm throttle body to a 75mm LS6 manifold.
We have a true 90mm set up with tuning required on standard cars to get any improvements and on cam only, head and cam or strokers this is a vast improvement.

Mick

[ratter]

Arn't you just replacing the top part of the manifold?

[APS Fston]

Arn't you just replacing the top part of the manifold?

No we replace the whole manifold as a sealed unit.

Mick

[Oztrack Tuning]

I have a 216 220 Cam 1.8 rockers and the car has run 11.765.
Would one of your manifolds with TB help my car. It still has the LS1 manifold and 75mm ported TB ??

Do you supply and if so how much?

[chops]

But if you change the intake manifold and add a 90mm throttle body dosen't that then make the car not a true bolt on?

Doesn't Dee Jay run a FAST manifold?

http://www.ls1.com.au/forum/showpost.php?p=496762&postcount=14

[APS Fston]

I have a 216 220 Cam 1.8 rockers and the car has run 11.765.
Would one of your manifolds with TB help my car. It still has the LS1 manifold and 75mm ported TB ??

Do you supply and if so how much?

On our testing on the dyno and at the track there is a big improvment.
We have just finished an engine on a Grange that is written in another thread that wasn't running at 100% on one of it's maps in the program. After we fitted the manifold and throttle body, problem fixed and watch the numbers of the dyno improve.
As for stock and cost yes we stock them, they are $880. inc gst and the throttle bodies are $660. inc gst.
Call us on 03 9783 8300.

Mick

[APS Fston]

Doesn't Dee Jay run a FAST manifold?

http://www.ls1.com.au/forum/showpost.php?p=496762&postcount=14

I sent Dee Jay a private message asking him what manifold he is running but he hasn't replied yet but it is quoted that he is running a 90mm manifold.

[spiv]

I sent Dee Jay a private message asking him what manifold he is running but he hasn't replied yet but it is quoted that he is running a 90mm manifold.

Yes it is a FAST manifold :)

[BAD355]

On our testing on the dyno and at the track there is a big improvment.
We have just finished an engine on a Grange that is written in another thread that wasn't running at 100% on one of it's maps in the program. After we fitted the manifold and throttle body, problem fixed and watch the numbers of the dyno improve.
As for stock and cost yes we stock them, they are $880. inc gst and the throttle bodies are $660. inc gst.
Call us on 03 9783 8300.

Mick

Mick can you quantify your "big improvement" for us please...?

Is that an outright or exchange price for the manifold? And is there any visible differences externally to the manifold?

Sounds interesting...

[APS Fston]

That is an outright price and the only difference is the map sensor is at the front of the manifold, rather than at the rear.
On bolt on cars we have had close to 10rwkw improvement. On one particular car we ran an 11.86 in the unopened class.
As for head and cam packages, we are seeing 15rwkw or more on the dyno.
There are a lot of shops fitting the 90mm FAST manifold, this seems to be a more affordable way with the same results.
If anyone has any more questions, just call us

[spiv]

That is an outright price and the only difference is the map sensor is at the front of the manifold, rather than at the rear.
On bolt on cars we have had close to 10rwkw improvement. On one particular car we ran an 11.86 in the unopened class.
As for head and cam packages, we are seeing 15rwkw or more on the dyno.
There are a lot of shops fitting the 90mm FAST manifold, this seems to be a more affordable way with the same results.
If anyone has any more questions, just call us

Hi Mick,

I have a FAST 90mm ready to go on my new combo and have factored in a improvement of only 5RWKW's. Has your testing of the FAST 90mm generated more than this, with a head cam combo? If so I would be rapt :)

Cheers

Colin

[APS Fston]

On all applications, retuning is required.
Its good to hear from a customer that isnt expecting inflated kw improvements.
We havent had as much experience with FAST manifolds, but have read a lot about them. I think you will be happy with the end result in bolting that manifold on to your car, as long as you get it retuned.
All of my comments are based on stock standard throttle body and manifold to our combination and not on vehicles which have already been fitted with a larger or ported throttle body.

[spiv]

On all applications, retuning is required.
Its good to hear from a customer that isnt expecting inflated kw improvements.
We havent had as much experience with FAST manifolds, but have read a lot about them. I think you will be happy with the end result in bolting that manifold on to your car, as long as you get it retuned.
All of my comments are based on stock standard throttle body and manifold to our combination and not on vehicles which have already been fitted with a larger or ported throttle body.


Thanks Mick for your prompt reply.

I have heard that in stock form that the LS2 manifold is not the best flowing piece of kit. But with your mods and experience it looks looks you have found the right combination for both bolt on and head/cam combo's etc at a much lower price than a FAST/90mm which if purchased new is expensive.