UPDATE 9/21/11: WHATS NEXT? UPCOMING
SKIP AHEAD TO THIS THREAD FOR NEW POSTS
>>>NEW UPCOMING PLANS<<<


This thread is directed to my 2004 GP GTP CompG and it's modifications.
I got this car with 7,xxx miles on the odometer, in February of 2007. It was all stock with Enkei 10 spoke alloy wheels.
To this day, it has 68,xxx miles. This car is daily driven.

-HPTuners Pro VCM suite
-DHP
-Comp Cam's X-P hot camshaft (212,224/.325.335/116LSA)
-Rollmaster double roller timing set (properly machined)
-105# valve springs
-qwik port stock heads (casting #8)
-ARP head studs
-Cometic MLS .052" head gaskets
-ZZP MPS 3.0"
-ZZP 2.25" aluminum A2W intercooler system w/ silicone hoses & bosch pump (100% resealed/leak free)
-ZZP billet fuel logs
-Mototron 80#/hr (800cc) injectors
-E85 (summer) / 93 octane (winter)
-Poly upper engine mounts
-ZZP billet aluminum upper engine supports
-Poly lower engine mount
-Poly transaxle mount
-ZZP stainless headers
-ZZP 3" 304SS downpipe
-ZZP 3" 304SS catback exhaust
-30" 304SS Magnaflow resonator
-KYB GR-2 gas shocks
-SSC lowering springs w/ anti-pogo washers
-GXP brakes
-Xenon HIDs 10,000k
-Aeroforce scan gauge
-AEM vac/boost
-AEM wideband o2
-AEM fuel pressure

Progress:

In-car tear down
Engine is out
Cam install
Block, heads and timing set
Valvetrain, front cover and intake
Money shots
Engine is in, and buttoned up
Gas shocks, lowering springs & GXP brakes
85mm LQ4 MAF & Mototron 80#/hr injectors
ZZP I/C overhaul...new core, plates resealed, new hoses
3.0" pulley IDLE VIDEO
12 second pass, 110+ MPH @ GREAT LAKES DRAGWAY
NEW UPCOMING PLANS

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'04 GP CompG - 2.6" junk

Idk if I'd jump right on that 2.8. I would step it down and tune in increments. You're gonna want to port the heads to the max to handle that.

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Mods include-
Pulley boys 3.2 pulley, 20* timing, HPTuned, pacesetters, SSIC, modded 1.9's, F/R STBs on Don Rome brackets, 255lph pump, ZZP billet rails, GXP catback
Best of 13.4 at 103.... 12's this year

x2 on the 2.8 but id leave the heads stock cuz theres where the xp was designed to make its power

Don't use the GR2 springs, they are not meant for lowering. The Comp G McPherson's will do just fine if you get a new set.

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2009.5 SBM G8 GT
November 2011 Car of the Month

Update. First, I'd like to say thank you for all of your feedback and opinions. If it weren't for you guys, I would have no guidance...some of you more mature than others *facepalm* Either way, keep it up. I'd like this thread to stay active weekly up until and during the build, I'll have a good number of pics along the way.

I'm starting to think I may just go with OEM or felpro head gaskets, since now that I think about it, it really is useless unless the heads aren't 100% stock. Plus, I'm nowhere near pro level of tuning, so if I can avoid having to tune around the extra compression on a 2.8", I'm going to do it. I'd like to have decent advance. This engine will most likely never see Ethanol; at least while it is in the GP, so 42.5's are perfect. Also, I'm leaning towards stock McPherson struts, rather than the GR2's after what I've heard about them going out prematurely on lowered cars. I don't plan on changing my TB, either. My DBW has enough velocity at 75mm for this build, and I don't notice much, if any, actuation lag. Any more input, guys? Discuss.

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'04 GP CompG - 2.6" junk

Ok, found the Bilstein's for the GXP on allshocks.com and they are nearly the same price as the McPherson's!!! I would go with these instead if I were you.

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2009.5 SBM G8 GT
November 2011 Car of the Month

I'm unsure if you are rocking a rebuilt tranny or not Aj227, but you may want to save money for one just in case. I purchased my car at 56k, changed out fluid and filter on it, kept good care of it. Never was too extreme on the car and the transmission went out. The car has very little mods and the tranny failed so just a forewarning. Hopefully your transmission will not give, but be prepared. I don't have headers on my car yet either and the 3.6 is waiting to go on. All I had was intake, 180tstat, tune, and AL 104's.

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It has begun...

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'04 GP CompG - 2.6" junk

Progress... slow and steady...













I've got a lot of cleaning to do...

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'04 GP CompG - 2.6" junk

That is a serious job there... lol

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2012 Ford Focus SE Sport
2012 MINI Cooper Clubman

I have ADHD and drive a Focus. Ironically.
Although gold dust is precious, when it gets in your eyes, it obstructs your vision.

That is one nasty looking engine!

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Engine has been torn down to short block.










Block, heads, and other accessories have been transported from my garage to James' heated garage. We've cleaned the block, pistons and heads, after James ported my cylinder heads and picked up my machined Rollmaster. There is a bit of cleaning left to do, then it is time to paint the block, heads, and accessories. Afterwards, re-assembly will begin.

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'04 GP CompG - 2.6" junk

Damn...Nice work so far. Bet you can't wait to get it runnin'

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04 Supercharged American and 01 Turbo Swede

Block and heads have been primer'd and painted black. Block is ARP studded, and Cometic MLS .052" gasket'd for the 'qwik' ported heads. Rollmaster double roller timing set has been machined to fit the US 3800 crank keyway, and is installed. Balance shaft has been removed, will be JB welding the oiling for it, once the flex plate and rear cover come off.

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'04 GP CompG - 2.6" junk

Great build. Your balls deep in that thing!

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04 GTT - Retired
Best ET 13.016
Best Trap 115.56 MPH

I wish I had a garage to do that in.

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DD: Cruze LT
04 Comp G: All dash no flash.
"I'm not an alcoholic but I keep a gallon of whine under the hood."
"My Grand Prix has a first name its W H I N E R."

Engine is assembled, and has been transported back to my garage; where the build first began, and where the chassis awaits...

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'04 GP CompG - 2.6" junk

Great work, reminds me of one of my builds.

Milestone

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Great work. Keep the pics coming. I like where this is going.

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1997 TGP

Looks awesome! Thats gonna be one badass grand prix pretty soon!

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'04 GP CompG - 2.6" junk

Holy crap that was a fast build... Can't wait to see how it runs.

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2012 Ford Focus SE Sport
2012 MINI Cooper Clubman

I have ADHD and drive a Focus. Ironically.
Although gold dust is precious, when it gets in your eyes, it obstructs your vision.

Out of curiosity how much is something like this.running you seeing as your doing most of the labor yourself.

I didn't realize how much bigger the lobes were on that cam. That's sweeeet

What are the advantages to a double roller chain system?

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2000 Silvermist GTP. CAI, 180 t-stat, stage 2 shift kit, u-bend and resonator delete, fastkatt tuned PCM, autolite P104's, 3.4 pulley, altenator wire upgrade.

Much more reliable than a single chain setup. Couple that with 130# springs, titanium retainers and a few other odds and ends, you have a pretty good valvetrain setup.

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2009.5 SBM G8 GT
November 2011 Car of the Month

Very nice build.. Cant wait to see it done.

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02 Chevy Zr2-sl2,2"BL,Mtclassic II's,Flowmasters,duratrak lockers 3.73's gears
97 Dodge avenger-to many to list-Sold
02 Gp Gt- Intake,Gmpp,PCM,3In Dp.