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Old 06-04-2012, 04:08 AM   #1 (permalink)
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LS1 coupe is back on it's feet

I put the tires back on and took it for a drive today after giving it a much needed bath. The engine is still not running right but I hope to have that fixed this week with a little dyno time.

Here are some pics:








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FFR Coupe #340, 2003 LS1 350 RWHP, TKO 500, QT BH, Champ 10 QT pan, 5 Lug and AC, Cobra Disc, SAI mod, Kumho XS 315's x4 ..Licensed for 28k..Just over 30k w/race tires and many mods
http://s464.photobucket.com/albums/rr2/mmarshall01/
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Old 06-04-2012, 04:28 AM   #2 (permalink)
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Very cool!!
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Old 06-04-2012, 05:20 AM   #3 (permalink)
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Congrats on getting it back on the road Mike.

Are you going to join us at this month's GCC meeting? I'd really like to see (and hear) it in person.

Hope you can join us!

btw, in a previous post, I believe you mentioned something about Stainless Steel Heat Shields(?), Did you buy raw SS from Shapiros? I'm considering something similar for my roadster and I'd like to talk to you about them.

Mark
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Old 06-04-2012, 12:58 PM   #4 (permalink)
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Not quite on the road yet. It still needs alot of tuning, and has no power off idle. Still running very rich, but the blue flames from the exhaust is cool.

Yes the heat shield are from Shapiro. I cut 2 card board templates and took them down there. We then used their big shear to cut them to the templates. They charge $2 per cut which was well worth it. The stainless is the thinnest polished stuff they have. Their shear is so large it was difficult to get it right. If you know someone with a smaller shear you could do a better job.
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FFR Coupe #340, 2003 LS1 350 RWHP, TKO 500, QT BH, Champ 10 QT pan, 5 Lug and AC, Cobra Disc, SAI mod, Kumho XS 315's x4 ..Licensed for 28k..Just over 30k w/race tires and many mods
http://s464.photobucket.com/albums/rr2/mmarshall01/
http://www.youtube.com/watch?v=uHtx7...1&feature=plcp
Build started - 8 Apr 2008
1st Autocross - 18 Oct. 2009 XP Class
2011 and 2012 St Louis region XP Champion
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Old 06-04-2012, 12:59 PM   #5 (permalink)
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Thought the exhaust needed to end behind the driver for SCCA?
If you need some help let me know,just sitting at home recovering.
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Old 06-04-2012, 01:05 PM   #6 (permalink)
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It says behind the driver or out the side. So far I like the way it sounds inside. Because the exit is so far away from the rear hatch it appears all the resonance is gone. Hopefully Omer can work some magic and get it running right.
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FFR Coupe #340, 2003 LS1 350 RWHP, TKO 500, QT BH, Champ 10 QT pan, 5 Lug and AC, Cobra Disc, SAI mod, Kumho XS 315's x4 ..Licensed for 28k..Just over 30k w/race tires and many mods
http://s464.photobucket.com/albums/rr2/mmarshall01/
http://www.youtube.com/watch?v=uHtx7...1&feature=plcp
Build started - 8 Apr 2008
1st Autocross - 18 Oct. 2009 XP Class
2011 and 2012 St Louis region XP Champion
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Old 06-04-2012, 01:43 PM   #7 (permalink)
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Which alternator (car and year) bracket are you using? Also are you running AC? If you are which one as well? I'm using a 04 vortec truck engine in my coupe and have yet to figure out which brackets will work. I'll just have a alternator and A/C pump.

BTW, looks good back on it's wheels. Those are some good tires for a street tire. I ran those for a couple of years on my V8 powered RX7.

JC
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Old 06-04-2012, 01:53 PM   #8 (permalink)
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The entire lump came out of an 2003 vette. I bolted it in as is and it fit pretty well. The A/c compressor is mounted low on the right side.

Here are a bunch of my LS conversion pics: http://s464.photobucket.com/albums/r...cpZZ1QQtppZZ20

Pics that show the accesories:



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FFR Coupe #340, 2003 LS1 350 RWHP, TKO 500, QT BH, Champ 10 QT pan, 5 Lug and AC, Cobra Disc, SAI mod, Kumho XS 315's x4 ..Licensed for 28k..Just over 30k w/race tires and many mods
http://s464.photobucket.com/albums/rr2/mmarshall01/
http://www.youtube.com/watch?v=uHtx7...1&feature=plcp
Build started - 8 Apr 2008
1st Autocross - 18 Oct. 2009 XP Class
2011 and 2012 St Louis region XP Champion

Last edited by mmarshall; 06-04-2012 at 01:59 PM..
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Old 06-04-2012, 03:07 PM   #9 (permalink)
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Mike

Did you change cams or is it still stock from the heap?
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Old 06-04-2012, 03:19 PM   #10 (permalink)
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No changes yet. I wanted to get a season of racing under my belt 1st using the stock lump.
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FFR Coupe #340, 2003 LS1 350 RWHP, TKO 500, QT BH, Champ 10 QT pan, 5 Lug and AC, Cobra Disc, SAI mod, Kumho XS 315's x4 ..Licensed for 28k..Just over 30k w/race tires and many mods
http://s464.photobucket.com/albums/rr2/mmarshall01/
http://www.youtube.com/watch?v=uHtx7...1&feature=plcp
Build started - 8 Apr 2008
1st Autocross - 18 Oct. 2009 XP Class
2011 and 2012 St Louis region XP Champion
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Old 06-04-2012, 05:56 PM   #11 (permalink)
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Reason for asking is that it should run nicely as is unless it is in limp mode because of Vats programming in CPU or sensor issue. (Turning off a bunch of stuff that is no longer hooked up from Vette. As in GTM's)

There should not be any need for Dyno if Fuel pressure is set to factory spec.

The VAT's can be accessed with HP tuner software and hardware.
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Old 06-05-2012, 12:16 AM   #12 (permalink)
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Thanks for the input and kudos!

I took it to my tuner today and it kicked back over 30 error codes. We sorted one problem and it idles better, but still bogs off idle. He will have to tune out rear O2 sensors, auto trans, tank pressure, evap, and probably a bunch of stuff I can't think of.
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FFR Coupe #340, 2003 LS1 350 RWHP, TKO 500, QT BH, Champ 10 QT pan, 5 Lug and AC, Cobra Disc, SAI mod, Kumho XS 315's x4 ..Licensed for 28k..Just over 30k w/race tires and many mods
http://s464.photobucket.com/albums/rr2/mmarshall01/
http://www.youtube.com/watch?v=uHtx7...1&feature=plcp
Build started - 8 Apr 2008
1st Autocross - 18 Oct. 2009 XP Class
2011 and 2012 St Louis region XP Champion
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