made it to the dyno this morning .
fuel pressure kept dropping to 65psi no matter how high i set the base fuel pressure, so i couldnt get more than 12.9AFs out of it.
but still made 582whp ON 16psi. through a 4l65 and a 3600 stall. UNLOCKED

gona change my regulator since my regulator is only good to 65psi.
gona add another point to the fuel and a little more boost and it should crack 600whp no problem.

also, this was through a 3inch down pipe to a 3inch true dual catback with borla mufflers

 

 

Do you have plans in the near future to swap in a 4l80e?

 

either that or a th400

 

Congrats man! What cam are you running?

 

It's a ls9 cam.

 

Awesome man, get that issue fixed and get that 600+

 

Are you just sucking the air out of that little corner of your car?


I'm guessing the exhaust manifold on the passenger side is pointed down. Then you have 2.5" (??) exhaust tubing going down & around the back of the engine & back up the driver's side & that's the insulated pipe we see on top of everything on the driver's side. The Driver's side manifold is pointed up & goes into some sort of collector tying the two sides together before it goes into the turbo.

Your intercooler & cold side kit, was that made for the GTO, or is it a generic kit that should fit many different vehicles?

So, if you don't mind me asking, how much was it to get the exhaust tubed up, or did you figure a way to do that yourself? & how much was the cold side tubing & intercooler?

 

that turbo is huuuuuuuuge!

 

yup. but its 2.25ID hot pipes.

the intercooler is a ebay core. 31x12x4..
the intercooler piping was a universal kit i bought of ebay also and cut to make it fit.

also, they charged me 300$ for the hot side/downpipe/wastegate dump at a local muffler shop, nothing fancy

 

Is your MAF mounted directly onto your TB? Are you also running meth? If so where do you mount your meth nozzles? I have my MAF mounted on my TB and want to run some meth but heard it needs to be injected AFTER MAF.

 

I did have meth on it, but switched to E85.

And yes, the maf is next to the TB.

 

How did you have your meth nozzles set up? Meth may be my only options because there's No E85 here in Hawaii. Also love your gt45 build and other gt45 builds, got one ready to swap in to replace my magnum t72. Denmah also told me they made more power with the gt45 than a mp76 on their truck build!!!

 

i just put the 2 nozzles before the INTAKE TEMP SENSOR.

 

just got a new PB today.

18psi, and a little shot to get me off the line, but just spun so i let off the spray
10.75 @ 135.3MPH

ill post up the video of the run.

ALSO THROUGH IT ON THE SCALES, CAME IN AT 3806LBS WITH OUT ME IN IT

 

damn dude nice work! 4.8 getting it done!

 

this is still through the stock 4L65 and single disk 3600rpm REVMAX stall.. lol

ill be going out again sometime next month.

this time ima spray the whole way down the track, hopefully and see 140mph traps/ low 10s!!


i passed the 1/4 at 7k rpm at 135MPH. on the hoosier 27x8x15 slicks.

how much rpm can i wrap this lil 4.8 to?

 

7k is fine! they love it

lol

 

well ****. i dont want it to shift into OD, would it handle 7300rpm?
i guess only one way to find out.lol

 

Awesome job man!