Strong running at the US Half Mile in Houston

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Old 05-16-2015, 09:55 PM
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Default Strong running at the US Half Mile in Houston

Had a great time racing at the US Half Mile in Houston today. Since all the fast Vettes were scheduled to run at the Texas Invitational this weekend, the field was a little slower than normal, but that didn't keep us from having fun and running some new bests. My C6 Grand Sport Automatic ran 174.7mph in the half and 144.4mph in the 1/4. I was very pleased considering I'm still running the little ECS 1500 supercharger and not a YSi.

I recently added the new ECS Direct Drive 8 rib conversion utilizing an Innovators West 10% OD lower pulley. This is the super slick flip drive with a cogged best that drives the 6 rib accessory belt. My boost is running between 13-15psi now. For reference, my car is a 2013 Grand Sport Automatic with a forged 416, Trick Flow 255 heads, custom cam and ECS 1500. Still running stock 6L80 trans, stock torque converter and stock 2.73 rear end.

When I ran 199.8mph at the Texas Mile in October, my half mile speed was 169.7mph. So adding the new ECS Direct Drive added 2 lbs of boost and 5 more mph in the half (my belt is not slipping at high rpm any more which helps mph too). That would put my Mile trap speed in the 205-206 range which is not too shabby for how little I have invested in the car. There were lots of much more expensive cars going lots slower this weekend so I'm happy that the combo works so well.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
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Old 05-16-2015, 10:18 PM
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Great Job Patrick! You have that C6 flying!
Old 05-18-2015, 12:07 PM
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Awesome!
Old 05-18-2015, 01:41 PM
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That is moving. Didn't know you were out there, would have dropped by and said hello.

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Old 05-19-2015, 05:42 PM
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Very Nice, car looks beautiful in person!
Old 05-19-2015, 05:58 PM
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Wish we could have made it out but were on the dyno all weekend trying to get caught up. Nice runs!! Hopefully next time we can make it out.
Old 05-19-2015, 07:07 PM
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Is it still as mild mannered as it was before? I know that was kind of your goal last I was down.
Old 05-19-2015, 10:14 PM
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Originally Posted by codyvette
Is it still as mild mannered as it was before? I know that was kind of your goal last I was down.
Yes sir, it's every bit as mild mannered as before. Still has stock mufflers and same smooth idling cam that only needs 600 rpm in drive. A total sleeper. Totally catches people off guard because it looks like a garden variety Grand Sport running around. Don't really hear the blower and the cam is so mild, it doesn't sound like much.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
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Old 05-20-2015, 12:26 PM
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Yeah I would imagine that 121LSA does not have much chop to it at all. Congrats on the nice numbers man, hell of a nice daily driver, sounds like a (non-car girl) wife could drive it around town with no issues at all.
Old 05-25-2015, 04:29 PM
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Nice runs Pat! Curious, where do you have the 6L80 shifting at with that much power?


Jason
Old 05-26-2015, 09:18 AM
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Originally Posted by Camaro99SS
Nice runs Pat! Curious, where do you have the 6L80 shifting at with that much power?


Jason
The Vette shifts at 6600-6700 rpm in drive or sport mode depending on gear. I'm using 100% torque management on upshifts but with very specific shift timing and pressure to keep everything happy. My WOT shifts are super fast (150-200msec actual times) and the trans has been holding up very well in spite of all the power.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
Old 05-29-2015, 05:00 PM
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Congrats bud. Glad the belt slip is fixed. Time to cage it for the mile!!
Old 05-29-2015, 06:44 PM
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Originally Posted by Patrick G
Yes sir, it's every bit as mild mannered as before. Still has stock mufflers and same smooth idling cam that only needs 600 rpm in drive. A total sleeper. Totally catches people off guard because it looks like a garden variety Grand Sport running around. Don't really hear the blower and the cam is so mild, it doesn't sound like much.
Until you see those drag radials out back , but I guess that's only if they are looking for that kind of thing. Sweet car!



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