Twin Turbo 427 LS7 Corvette - The Tuning...

[APS Luis]

Finally , we have had a chance to get stuck into this monster.

http://img34.imageshack.us/img34/6623/sl370613.jpg

Finished off and tidied up some of the little details in the installation of the twin turbo kit, now time to start mapping fuel and spark.

http://img190.imageshack.us/img190/2952/sl370619.jpg

After some initial problems with the oil circulation on the dry sump system - we ended up removing the tank and modifying it - if you look carefully and you'll see the "hi-tech" coca cola bottle breather ! ( this has been removed since)

The catch tank kept filling up ,it took us a few days to trace it back to some strange plumbing connections within the dry sump tank, the scavenge pump was squirting oil straight into the overflow breathers !

http://img196.imageshack.us/img196/9574/sl370611.jpg


Starting off with a safe tune, very little timing and conservative boost( 6 psi ) it's already pumping out some serious HP - the 345/25/20's struggling to find grip on our rollers.

http://img196.imageshack.us/img196/6104/sl370622.jpg
Currently, we are sorting out the setup of the Apexi boost controller..

couple more pics here

http://img38.imageshack.us/gal.php?g=sl370615.jpg

Luis :)

[LooneyR8]

Sounds like an absolute weapon......No doubt should be an interesting drive on the road..:goodjob:

The rocker covers really say it all......427 TWIN TURBO...!!! :bow:

[nang3]

405rwkw at 6 PSI ?? faark what a weapon and must be so much fun to squeeze the throttle in a tunnel !!

[Ghosn]

Not enough pics!

[APS Luis]

405rwkw at 6 PSI ?? faark what a weapon and must be so much fun to squeeze the throttle in a tunnel !!

Mick drove it on the freeway - tells me he had a "clench" moment just squeezing the throttle in 3rd gear at a politically correct 100kph ( 3.15 ratio diff )

I refuse to sit in the passenger seat with the laptop on my lap - takes too long for the organs to find their right place.:)

[VYSLED]

Im very keen to see the z06 running to its full potential on the circut. Almost sure it will prove the zr1 wrong and then some!

[Speedy Gonzales]

I read the article in SM, very nice indeed.

What are the specs of the engine?

[APS Luis]

QUOTE=Speedy Gonzales;1584883]I read the article in SM, very nice indeed.

What are the specs of the engine?[/QUOTE]



LS7 "crate " engine , studded (crank & heads) , oliver rods, custom APS camshaft, 9.3:1 comp, Harland Sharp shaft mount roller rockers, ARE dry sump system.......pretty standard really..:)

[Blwnve]

I heard this thing last night and this morning and it sounds TUFF good work boys :bow::bow:

[APS Luis]

Twin Turbo Corvette - finally...

Today after some nagging ( from our part ) , Clive the owner allowed us to squeeze it .

Clive picked it up from us making 6 PSI and a lazy 405 rwkw , in a car with this weight , he reckons it was absolutely the most frightening thing he's ever driven ( shopping car is a BMW M3 ) and he only once tried WOT in 4th gear , his comments were

"'I 5hit myself"

Well, we tweaked the APEXi boost controller for 13 PSI and added some timing to his spark map - our engine man tells us that 18 psi should be no problem...

http://sphotos.ak.fbcdn.net/hphotos-ak-ash1/hs514.ash1/30336_389456438669_251043408669_3666629_1684011_n. jpg

I'll get a dyno sheet of the before and after - Clive stood next to us when we ran it up and needless to say, he looked a little pale


LOVE IT !

[EXCESSV]

FUK YES!!!!! :drool:

sooo much power in a light car would just be insane! :goodjob:

[APS Luis]

YouTube- A.P.S.'s twin turbo LS7 Corvette

[SHANESVZSS]

the rocket covers say it all!! this thing would be a absolute freak!! well done to all involved :goodjob: :bow:

[iloveholden]

FUK YES!!!!! :drool:

sooo much power in a light car would just be insane! :goodjob:

Agreed, i cant imagine how much fun that would be to drive!:goodjob:

[HARMSY]

:drool::drool::drool::drool::drool::drool:

I'm just waiting for tatts next tues then i'll be down to pick one up......

[sv300 - 75]

great work guys.

ive just done some research, the stock Z06 runs about a 12sec quarter which is good for a stock car, this thing would be in the 10's with some good rubber.

for a car that only weighs 1420kg stock this thing would be INSANE to drive.

i really should buy shares in tyres one of these days