AS Supercharged 850/1000HP

[Strike1]

Someone in the UK is fitting an AS LSX Supercharged 850/1000hp engine.

I'm interested in your installation as I'm sure most of the Ultima family are.
What modifications are needed to the firewall and bulk head ??

Please can you post some pic's and keep us all posted on your progress.
This is an exciting project to follow, well done that man.
Thanks in advance.

[738 driver]

Be very interesting to have that lot half inch from your ears.... do you get a complimentary helmet ?

Similar LSX-blower results can be had without cutting at all.!

Edited by 738 driver on Tuesday 9th August 18:09

[V8Dom]

cant see that fitting in unless engine is further back than designed then the weight distribution will be all wrong!!!

What is the point, 800, 900 1000, 1200 hp.... its a road car!!!!!!!!!!!!!!!!

Dom

[hedgefinder]

i believe that the car you are asking about had an lsx with a procharger system fitted. It had a number of parts specially fabricated to make the supercharger system fit.

[XTR2Turbo]

That looks too tall to fit in. What gearbox could be used?

[Thevet]

Don't worry about too tall, that engine won't fit against the bulkhead unless moved back in the chassis. Been there done that. It probably would fit height wise as the blower isn't as high as the one I used, the Weiand 142 and 177 units would fit, which I think this one is....or similar anyway, I stand to be corrected.
And the noise behind your ears is brilliant, even with a helmet on.

Edited by Thevet on Tuesday 9th August 21:15

[Strike1]

Word from the top said this chap is fitting it right now , been a couple of weeks since it arrived in the UK.....Chatted to AS and they recon only a slight mod to the bulk head is required.

This is the spec ....

1000 hp equipment includes:

GM LSX engine block
GM L92 cyl. heads
Ferrea valves
PAC valve springs
Mahle forged pistons and rings
Comp Cams hyd. roller cam
Howard forged steel crank
Howard billet steel rods
Whipple 3.3L supercharger and intercooler
SCD 102mm throttle body
ATI dampner
Sharp roller rockers
FAST 85 lb. injectors
Delphi E67 LS9 ECU
Clevite 77 bearings
Fel Pro gaskets
ARP head and main studs
Compression 8.2
Boost 18 psi

The compression ratio is the key in my eyes, less stressed parts.
once you've had 700hp its not easy to go backwards in power. Here in South Africa
our best track is 6000ft above sea level ( Kyalami , former F1 circuit) and that means a real 25% loss in hp ( less air ).Road car yes , but we spend more than 50% of time on track , were the GTR is most definitly the happiest.
I use a G 96/88 six speed with all up rated internals , synchros and then all parts put through cryogenics and then shotpeened. This all runs to a triple plate carbon carbon clutch. Which is rated to 1000nm.
Maybe anything over 500hp on the UK roads is a bit over the top, but hey we not on such tight roads here , with way less traffic, thank g.. .

[Thevet]

Don't think the power comments are of value, some here are above the 650 I had. However, if AS say it'll fit then they probably know, but bulkhead mods are not easy I promise. Engine specs are mostly internals which won't affect the fitting into the chassis. Best people to ask are the factory, so see what they say. If you want info on a blown SBC using a Weiand 6-71 then I'll be happy to ofer my experience, as I don't think anyone else has been daft enough to try and squeeze it in.

[Strike1]

Thanks , yes I am interested , pic's too. I just really like the concept compared to turbo's. As much info as I can get on this one, that why I'm hoping to get this chap to respond as I'm sure he would have done a dummy up in the chassis by now. Lets hope he answers as well. Thanks gents.

[Strike1]

Thanks , yes I am interested , pic's too. I just really like the concept compared to turbo's. As much info as I can get on this one, that why I'm hoping to get this chap to respond as I'm sure he would have done a dummy up in the chassis by now. Lets hope he answers as well. Thanks gents.

[738 driver]

Id re-do the listed parts-spec unless you are going to rebuild regularly.. On the dyno or drag strip is one thing.... in the chassis/under the clip on the track is another.

Why does the photo not reflect the parts specified ?

Chopping the diagonal roll bracing would be no fun at all but anything can be done depending on one's end requirements... Chassis really needs stiffening at elevated power levels... good luck....

Edited by 738 driver on Wednesday 10th August 09:02

[ezakimak]

how would that compare to an LS9 ?

[GTRCLIVE]

All that just to get 1000bhp......

You need the September Issue of "Hot Rod" (American version) 1203 bhp form a almost stock Truck motor and 2 eBay turbos....amazed the hell out of me...

Turbos the way to go IMHO

[ezakimak]

Has that engine got a dry sump on it, or is the In - Out on the side of the sump for something else?

Ryan

[Strike1]

Yes its has a dry sump system.

[chuntington101]

Now thats a pretty nice! well not pretty but it looks goooodddd!

Pretty nice spec to. although its a shame they are using the older 3.3ltr blower and not the new 3.4ltr units. The Ford guys have been pushing well over 800bhp (you can buy one form the factory with 800bhp) with their 5.4ltr motors and these supercharger. Also KB have redently released their 3.4ltr blower for the new cammero. Again guys are pushing similar power out of them.

What cubic inch is the above motor? 427? 434? 454 (if so it better be a tall deck)? also the heads are a bit disapointing. thought some nice LS7 units or even some nice 6 bolt heads would have 'finshed off' the engine better.

as for packaging, with the looks of it a single serp. belt drive could be designed/used. that should save a inch or so off the front of the engine. A 12rib should be more than enough even with the SC and all the ancileries on there.

Chris.

[chuntington101]

GTRCLIVE said:

All that just to get 1000bhp......

You need the September Issue of "Hot Rod" (American version) 1203 bhp form a almost stock Truck motor and 2 eBay turbos....amazed the hell out of me...

Turbos the way to go IMHO

Clive it was very impressive what they did. however the engine was never fitted to a car and driven on the road from what i heard. Also the turbos used where MASSIVE. Think 76mm units where used (1000bhp per turbo). Still a very good achievement and there are several folk on ls1 tech trying to emulate them. lol

The one thing about turbos in an ultima is packaging. at least with this setup its all packages into a single unit (nice to see an intercooler as well). The plumbing wont be much harder than a BN?A engine as the only extra would be the chargecooler water feed.

Chris.

[chuntington101]

ezakimak said:

how would that compare to an LS9 ?

ezakimak, the LS9 is totally different. The SC is mounted low in the valley and has a foward facing inlet. This would make it pretty hard to fit in the ultima as the inlet would be very close to the firewall. Also the LS9 uses the eaton 2300 blower. this is a 2.3ltr roots style blower where as the whipple is a 3.3ltr twin screw blower. The whipple should be more efficent (thanks to the screw design) but the 2300 unit have proven to make some good power! Corvette ZR1 guys have pushed WELL over 800bhp out of them.

Thanks,

Chris.

[Gulf LS3]

root blowers are for big heavy muscle cars not lightweight......

loads of wheelspin with that roots blower, that picture is not a LSX block, i would say a nice LS7 will be quicker than that unless you are on a drag strip.
A centrifugal blower would make more sense.

[Gulf LS3]

i hope its not going into a IVA required car....