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Doric's NOGAF GTO Update...

23K views 249 replies 50 participants last post by  ICEMAN99TURBO  
#1 ·
I'll add more pics and information as I go, but I figured I'd poke my head in and share.

I ordered some go-faster mods for the GTO. I ordered an ATI Procharger D1SC w/ a 4.00" pulley; people I've spoken with regarding the 4.00" pulley have thrown down anywhere between 8 and 12psi on the stock bottom end. With my altitude and supporting mods, I'm just hoping for/expecting 8psi and perhaps mid-500s to the wheels (corrected). Supporting mods are longtube headers, upgraded fuel system, and a 224/228 .566/.571 cam. Plus, of course, the requisite camshaft install goodies like dual valvesprings, etc.

Parts are on the way and today was gorgeous in Colorado, so I tore into the car in preparation.

2:30, the car went into the air.

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Three hours later, the garage looked like this:

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Lots of new parts going in - suspension goodies, too. I had a headstart when I swapped over the Konis and Eibachs from the '04, but I didn't transfer any of the polyurethane bushings I'd installed on the '04. Over the months since I bought the '05, I've been accumulating the bushings that I felt were critical for helping the handling of this 3800lb. behemoth; they've been sitting on my shelf since then, waiting to be installed. I also added an item to the pile that I always felt was missing from the '04; a set of beefy Hotchkis swaybars and heavy duty endlinks. :ndance:

Theoretically, the blower and cam package should be arriving sometime this week, so I should have more progress pics next weekend. I'll post 'em up when I've got 'em. :D

Cheers.
 
#2 ·
so uh....can you adopt me?

and point 2, throw down a sheet of cheap wafer board to work on dude, save that nice floor.
 
#7 ·
Very nice mods throwing on there! Good luck with the installs.
 
#8 ·
I say forget bitter and adopt me first...
 
#11 ·
#24 ·
i had a hood nostril GTO behind me in traffic today....until it got closer i mistook it from a Grandprix with a 2 scoop hood :lol:
 
#27 · (Edited)
From what I have seen since I hae had my GTO and I am sure Doric will back me up on this:
YOU NEED TO FIND A TUNER THAT KNOWS WHAT THE HELL HE/SHE IS DOING!
I have seen a tuner "tune" a car and get an extra 10hp out of it or like mine an extra 20hp. Handheld tuners do an ok job but are not near as good a dyno tune. These engines are very restricted from the factory: fuel/air ratios are wrong, highly restrictive parts etc.
For example: and Ls2 GTO from the factory (mine):
Base Line #s: 332rwhp/314rwtq
JUST DYNO TUNE # (no mods, down to stock air filter):352rwhp.348rwtq!
Now if you were to do the "basic bolt-ons" - LT Headers, high flow cats/cat back exhaust, high flow air filter (jury is still out on if CAI's do that much MORE for these engines), underdrive pully, and a GOOD DYNO TUNE: +/-450rwhp/450rwtq

I really only know one person that has done a LS6 swap and she puts down good numbers but I am sure that the aftermarket is $$$$. For the LS1/LS2 it is pricey, but I am sure that it is REALLY HIGH for the LS6.

My .02, get a G8 or a GTO and use the money you save to make it faster than a CTS-V. You can get a GTO so cheap now ($15000-20000), the $10,000+ you will save by not getting the CTS-V will get you a Maggie or ProX + all nessesary mods. Then you are looking at a 650hp car that will run mid to low 11's.
 
#32 ·
gotta ask, why the procharger and not a turbo setup this time around? were you not satisfied with the STS last time? was the price of the TT outta the question?

just wondering cause i like to bug...:wiggle:
 
#45 ·
I was definitely not satisfied with the STS. I put a ton of work into essentially re-engineering the kit at relatively great expense (eliminated the janky STS PCV system, tapped the oil pan for the return, eliminated the catalytic converters, wrapped the pre-turbo exhaust twice over, etc.), but it was still pretty laggy. I'm sure that I could have beat the lag with a good 3200 RPM stall, but at the time, I wasn't ready to do that sort of thing.

I bought the STS kit used and it was a lot of headache with tracking down leaks, etc. While I looked really hard at the two TT setups that were on the market, I decided that there was just too much permanent modification required. Things like cutting multiple holes in the sheetmetal, or the engine cradle, or the engine cradle and the sheet metal, relocating the battery to the trunk, etc. The Procharger setup actually cost me a little more (~$8500 after fueling mods and gauges), but I feel very confident in the kit. It's fantastic in terms of quality and, so far, although it's a really tight fit, everything lines up as it should.

Doric, you need to box up those electric fans and send them my way...lol... I need a set for my Lightning... :)
:D Sorry - I need 'em, too.

nogaf my ass, this sounds like an awesome project
Thanks.

Soo... My son had his first wrestling tournament on Saturday, which occupied the majority of the day. Afterward, I attended a friend's surprise birthday party. So no work was done on Saturday.

Sunday, I failed hard at taking pics. But I got the cam swap completed (cam, valvesprings, pushrods) and the Fluidamper installed and pinned. Mounted the blower bracket and blower, and started the radiator hose modifications required.

Still waiting for the fuel goodies and the headers, so there wasn't much else that could be done. I suppose I could have done some of the suspension mods in the meantime, but by the end of the day, I was a whipped puppy.