LS2 with L92 heads makes 460rwhp/446rwtq
#1
LS2 with L92 heads makes 460rwhp/446rwtq
OK, I am officially a huge fan of L92 heads after seeing this combo. Customer has an immaculate six speed 98 Camaro that he road races. He wanted a motor combo that would make strong power under the curve, not just at peak. He sourced a low mileage 6.0L LS2 out of an 2005 Vette, then added some stock L92 heads and LS3 intake manifold w/90mm TB and stock MAF. The exhaust would be 1 7/8" American Racing headers with dual cats. He wanted a custom cam to match all this and emphasize power in the mid-range:
The cam is a 223/231 .610/.617 113LSA +4 advance using Comp LSL lobes and Patriot Extreme dual valve springs. As you can see, the combo worked amazingly well.
The cam is a 223/231 .610/.617 113LSA +4 advance using Comp LSL lobes and Patriot Extreme dual valve springs. As you can see, the combo worked amazingly well.
__________________
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.
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.
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Stefan N (06-08-2020)
#3
You would want a different cam of course, but a single plane and carb should make even more power up high, but it would not make close to the power in the mid-range.
__________________
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.
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.
#4
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Very interesting looking combo. Very strong down low and still nice everywhere else too. Its good to see people stepping away from PEAK numbers and going for more AVG power. Nice Job PatG.
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The reason the wideband was showing some small spikes is because the AFR scaling is exaggerated to allow for better tuning. Most dynos average and/or smooth the AFR readings, also the reading was taken from the tail pipe and not from a dedicated bung in the exhaust which is what I prefer to use.
#12
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#13
???
I mean the results here are good (they are not great). I am just wondering what transpired with this build to make Patrick a fan of L92 heads now as opposed to people that have done the same thing in the past.
Or an even better question would be why was he a hater of them before this build.
I mean the results here are good (they are not great). I am just wondering what transpired with this build to make Patrick a fan of L92 heads now as opposed to people that have done the same thing in the past.
Or an even better question would be why was he a hater of them before this build.
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Nice numbers Pat. The car has to be a blast to drive. I thought you needed small intake runners to make good low/mid power.
I think it took you so long to come around on the L92/LS3 heads because we've seen so many done completely wrong.
I think it took you so long to come around on the L92/LS3 heads because we've seen so many done completely wrong.
Last edited by WKMCD; 05-27-2009 at 07:42 PM.
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The car is mine, I'm very impressed and excited about the work that Patrick did; great cam specs for big numbers under the curve and still retains awesome driveability around town.
The heads are untouched, stock GM .054" MLS gaskets, and they're the solid valves; static comp is around 10.4:1. For an SLP lid, stock untouched MAF, and cats I thought the numbers were pretty damn good.
Big thanks again to Patrick and Kurt getting it running so well!
Here's a video: http://www.youtube.com/watch?v=09l-82k6cBI
The heads are untouched, stock GM .054" MLS gaskets, and they're the solid valves; static comp is around 10.4:1. For an SLP lid, stock untouched MAF, and cats I thought the numbers were pretty damn good.
Big thanks again to Patrick and Kurt getting it running so well!
Here's a video: http://www.youtube.com/watch?v=09l-82k6cBI
Last edited by TexZ; 05-27-2009 at 07:27 PM.
#19
So this was acheieved with stock L92's???? Looks like I'll stick these on my TBSS and put the old 243's on my Camaro...Hey Pat I am assuming that you would have to spec a more TBSS friendly cam to get that brick moving huh?? Great Job by the way
#20
You don't see too many cathedral port heads making these kind of numbers unless they are high dollar aftermarket castings, running much higher compression, coupled with a FAST 92 intake. I had not seen very many combos with good results with L92 heads in the past to become a fan, but this is mainly because people didn't nail the ideal valve events when selecting a cam. This is just a case of all the parts of the puzzle working together well. Kevin did his homework when selecting the parts for his combo. I'm glad to have been a part of his build.
__________________
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.
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.