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Discussion Starter #101
WAIT FOR IT......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................




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IT'S ALIVEEEEEEEEEEE. Video to follow soon.
 

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Holy shit finally. Congrats!
 

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Let's roll
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Sounds good. When is tune/dyno time?
 

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Discussion Starter #109
I'm running the 490PAC tune on the Diablosport Tuner for now.. I need a new clutch before I head up north to get a dyno tune. It's slipping something fierce so putting it on the dyno would be a complete waste. I can't decide between Modern Muscle or Speed Inc. May be leaning towards the latter of the two.
 

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Glad to finally see the results. Definitely some healthy numbers. I'm going back together with my LS3 top end n EDC cam as well, hope I get similar results.
 

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2005 Pontiac GTO
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578 Posts
I have all of the parts for this, just took my heads to the machine shop this morning to have them milled .030. Start reading this link and other threads mentioned in it:
I can answer quite a few questions since I've been doing a lot of reading/researching on this.

Greg
 

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I purchased this package deal from flowtech. I was wondering what else would I need besides the Ls3 heads and the list below.

LSx "StreetSweeper-HT" Hydraulic Roller Camshaft
(Specs: 228*-232*-111*-.612"-.600")
LSx .650" Lift Dual Valve Springs
Seven Degree Chromemoly Retainers
Hardened Seven Degree Valve Locks
Steel Shelled Viton Valve Seals
FTI Pro-Series Hardened Push Rods
 

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2006GTO M6 dd-drag-roadcourse
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1,504 Posts
I have a buddy with an 05 goat that did the LS3 top end swap. Ls3 intake, ls3 heads, BTR stage 4 cam, headers, x-air intake, tune. Did 483hp & 454ft/lb on the rollers.

 

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Discussion Starter #116
Nice numbers! I have now procharged my setup... while it lasted it did 553/480 on 4.5lbs of boost with pump gas. #7 ringland failure about 200 miles in. It was fun while it lasted.

Over the past year I've completely rebuilt the shortblock. Stock crank and rods with ARP bolts and LS Pro aluminum pistions. Will be running a smaller pulley and oversized crank pulley. (before I had the largest charger pulley which I believe was 4.2") I went with -12cc dished pistons and went back to stock height LS3 heads to lower the compression to 9:1 for street reliability on pump gas.Hoping for mid to upper 600's if I can turn enough boost.
 

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Nice numbers! I have now procharged my setup... while it lasted it did 553/480 on 4.5lbs of boost with pump gas. #7 ringland failure about 200 miles in. It was fun while it lasted.

Over the past year I've completely rebuilt the shortblock. Stock crank and rods with ARP bolts and LS Pro aluminum pistions. Will be running a smaller pulley and oversized crank pulley. (before I had the largest charger pulley which I believe was 4.2") I went with -12cc dished pistons and went back to stock height LS3 heads to lower the compression to 9:1 for street reliability on pump gas.Hoping for mid to upper 600's if I can turn enough boost.
Can you help out a fellow gto member?
 
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