Svante

Hi, I thought i post some updates on my car from this winter project.

The car made 808rwhp and 900rw/ft lb with a single borg warner s475. This was with a gen.1 355ci.

I sold out the parts and bought a used 5.3 from a Tahoe. Went with the .010 over Wiseco pistons and compstar rods. ARP bolted, stock porte heads and mls gaskets. I built the intake myself and all the adaptors. I also replaced the Autronic sm4 ecu with a Holley EFI.

This time im going twin turbo bw s366. Hoping to pass 1000rwhp.

Beginning of the intake runners. These are pressed with a cnc milled tool i made to line up with the cathedral ports
Pressed intake runners
Parts for the intake
Special made longer bolts for the flywheel/adapter

Svante

Flywheel spacer almost done
Flywheel redrilled in the cnc to accept ls bolt pattern
Intake welded
Cnc milling fuel rails
Intake ready for paint
Beginning of the straight neck thermostat housing
Intake powder coated
Intake in place, pressurized up to 45psi
Oil output adaptor for the oil pressure gauge and turbos
Bracket for the FPR

Cnc milled gaugepod in aluminium

armybyrd

More details? Which accessories are you using? Tranny? More pics of car? In the middle of a 5.3 swap as well.

Svante

Thermostat housing finished
These guys showed up finally
The starter was a mess to redrill for have it working on the LS. But finnally it works with gen 1 flywheel and ministarter
New fanshroud for the radiator. The whole package is moved forward to make room for the turbos
Made a connector for the compressor. This is for the Lenco cs3 air shift pods. Two air tanks under the car supports the shiftpods and valve package
Gauge pods for the a-pillar is almost finished

Svante

If you like i can take some pictures for you! Tell me what you like to see. The tranny is a air shifted Lenco CS3 5-speed.

armybyrd

how about some engine bay shots. Is yours already mounted in place?

Svante

Ok i will post some shots of the engine bay later today. Yes i have it in place and fired up. Any questions just let me know

Svante

Here you go

armybyrd

Wow looks great! Now I feel bad since mind has a budget lol
what years your C4? Exterior pics?

Svante

Lol thanks, but im all about budget. Thats why i make everything myself, the cnc mill and cnc lathe was one of the best investments i have made. The intake was a total of $120 in material cost, but it took some time to finish.

The car is a -85 4+3 from the beginning, i bought it back in 2002 and then did all kind of weird stuff to it
- supercharged, twin turbo,

rear mount turbo, single turbo and now back to twin turbo again LOL.

ghoastrider1

That was a big *** project.. well done!

Svante

Yes it was bigger than i expected in the beginning
Luckily i have another Vette ( -92 lt1 ) with a 383 N/A that i drive when this still is in the garage lol. But this time i think i will have it ready for the season.

I need to get it approved by the Swedish vehicle inspection then back in the garage and mount the turbos. Then i can take it to the dyno.

STEVEN13

Hey Svante,

You always do amazing work. Some here may not remember your talent. For those that don't-He adapted a Lenco to the C-Beam with D44.

Steve

Svante

Thanks Steve all these modifications is one of the main reasons that this is so fun.

The Lenco is still there. Together with the D44, i really hope the Dana will hold up this season! Had some problems with it sweating oil during WOT pulls with the last motor

If it´s possible to beef it up, please let me know

/Svante

Pwnage1337

The block is stamped 4.8? Or is that normal with all 5.3's and they just use a different crank?

Not sure of the differences i thought the 4.8 just had a shorter stroke

Edit: Very impressive by the way, holy S

Svante

It says 4.8 5.3 but the last number doesn't show on the picture they use the same block.

Thanks
/Svante

STEVEN13

Check out threads by RKLESSDRIVER (Will) as he was able to go very quick (8's et in 1/4 mile) with the D44. Or you can do want he and I went to-Ford 9" solid axle.

Steve

Svante

Thanks Steve 👍🏻
A solid axle conversion is an idea. But i have to re-register the car as a rebuilt vehicle in order to use it on the streets. But its doable!

Are you happy with the 9"? Does it work ok as an allround car or do you mostly use it on the track?

/Svante

armybyrd

Have you already done you harness?

Svante

For the ECU? Yes i tore the oem out and installed the LS harness that i bought together with the Holley EFI. That saved a lot of time comparing to the wiring i had to do with the Autronic Sm4.

I have some Autometer gauges left then im finished.

/Svante