Pontiac GTO 2004-2006 The Modern Goat

Brocharged GTO build up

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Old 04-03-2012, 10:48 PM
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Default Brocharged GTO build up

Well, I guess it's close enough now that I can start up a thread for my build. It is a 5.3 iron block, bored a hundred over to a 347. Ported 243 heads, Futral boost specific cam, full exhaust, and most importantly the F1 blower:

With an eBay intercooler:



This kit is pretty much a combination of parts thrown together, but I like to call it a "custom" kit. LOL


I'll update as the build progresses.
Old 04-03-2012, 11:14 PM
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Nice. I'm interested in how this will perform.

Specs on the motor? Its bored so I'm assuming a forged bottom end. Whats the CR look like?

Are the heads milled or just ported?
Old 04-03-2012, 11:35 PM
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very nice man. its gonna be a killer
Old 04-03-2012, 11:46 PM
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LOL @ Brocharger.

Keep us updated!
Old 04-03-2012, 11:52 PM
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Awesome setup... I'm doing the same motor on my turbo build right now. Hopefully you'll get some video up soon. Like to see it perform. How many #'s are you planning on running?
Old 04-04-2012, 01:07 AM
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Originally Posted by gconnoyer
Nice. I'm interested in how this will perform.

Specs on the motor? Its bored so I'm assuming a forged bottom end. Whats the CR look like?

Are the heads milled or just ported?
What specs are you looking for specifically? Yes, the bottom end is forged. Heads are only ported.

Originally Posted by 402GOAT
very nice man. its gonna be a killer
Thanks playa, I've seen you out before a year or so ago. Your car does werk!

Originally Posted by GTOSE
LOL @ Brocharger.

Keep us updated!
Like that? lol
Originally Posted by badss_02
Awesome setup... I'm doing the same motor on my turbo build right now. Hopefully you'll get some video up soon. Like to see it perform. How many #'s are you planning on running?
Things should fall in place pretty quickly, just waiting on the cam to arrive then it's off to be tuned. Boost levels are undecided, but I do have a bench mark where I'm going to stop power wise.
Old 04-04-2012, 01:47 AM
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Keep us updated...
Old 04-04-2012, 12:40 PM
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What did you use for internals? Stay with the stock CR or raise/lower it?
Old 04-04-2012, 03:11 PM
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Originally Posted by badss_02
Keep us updated...
Fasho
Originally Posted by gconnoyer
What did you use for internals? Stay with the stock CR or raise/lower it?
Forged ls1 internals, CR I believe is 11:1.
Old 04-05-2012, 08:46 AM
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interesting. cant wait for more updates.


like the name Brocharged as well bahahaha.
Old 04-05-2012, 02:20 PM
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11:1cr? Nice.....I hate the way everyone drops down to 8.5-9:1 just to turn the boost up higher.... I've got my 408 built with 12.5:1 compression and full timing running on pump gas and here sometime in the future plan on turbocharging, but keeping the high cr and basically build just enough lag into the setup so I don't start building boost until just after 4,000 rpms where the motor is spinning too fast for preignition to occur and do damage

Last edited by mark21742; 04-05-2012 at 02:36 PM.
Old 04-05-2012, 10:08 PM
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people drop CR so they can hit full boost sooner so they dont have the lag. lag sucks unless your racing high mph. other wise your playing catch up
Old 04-06-2012, 02:38 PM
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Lil update, got my cam in the mail today! Last piece of my puzzle, should have a startup video soon. wOOt!



Thanks flewbyyou04r1 for the deal.
Old 04-10-2012, 12:23 AM
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Made some more progress today, as the cam was installed, all front end accessories put back on, and then... The blower was bolted up.


Next up mocked up the piping from the blower to the intercooler, and then from the intercooler to the throttle body..



And then we routed the belt.. I must say Kent(9secgoat) did an awesome job fabbing this kit up for our cars, and I can see why he had little trouble with belt slip through a 6 rib belt, it's hard to see in a picture but check out how much contact there is from the blower pulley and the belt. Pure awesomeness.

I'll try and get a closer picture of what I'm saying next time I'm at the shop. Before we left, all piping was tightened together and looks to fit great.



Getting closer, still have to custom up the radiator hoses and move the power steering reservoir. Then hook up the gauges, and install the fuel pump.
Old 04-10-2012, 09:15 AM
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Originally Posted by 04gto5.7
people drop CR so they can hit full boost sooner so they dont have the lag. lag sucks unless your racing high mph. other wise your playing catch up
Superchargers don't lag... you can run a higher CR and boost, everything just has to be done a little more precisely.
Old 04-10-2012, 12:30 PM
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And with turbos if you build for the lag it can help and let you build more power
Old 04-10-2012, 12:38 PM
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I definitely think you should upgrade to an ATI harmonic balancer, and at least an 8-rib pulley with a F1 Brocharger
Old 04-10-2012, 12:45 PM
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Until the last pick with the hood closed I didn't think it was going to fit....that thing is massive!
Old 04-10-2012, 11:19 PM
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Originally Posted by audacious nick
I definitely think you should upgrade to an ATI harmonic balancer, and at least an 8-rib pulley with a F1 Brocharger
I'm gonna see how it does on the current setup first. It worked for 9secgoat, so I'm hoping it all works out.
Originally Posted by mark21742
Until the last pick with the hood closed I didn't think it was going to fit....that thing is massive!
Lol it is pretty big, think I can hide it?
Old 04-10-2012, 11:58 PM
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man thats awesome looking. lets see some vids


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