400RWHP Stock Cam A6 C6!! 6.2l CNC Head Results-->
05-03-2007, 09:25 AM
#1
400RWHP Stock Cam A6 C6!! 6.2l CNC Head Results--> Guys here's some recent dyno results from the installation of our Precision Race Components 6.2l CNC Ported Cylinder Heads, Kooks Headers / Cat X Pipe, and Borla catback on my 06 C6 automatic car. The car baselined with stock manifolds, gutted cats, 3" x pipe & no mufflers. The final dyno graph is with kooks long tubes, kooks cat x pipe & PRC 6.2l CNC Ported Heads.
While doing the header installation I went ahead & installed the PRC 6.2l CNC ported heads, & L76 intake to match it! The PRC cylinder heads is setup with stock 6.2l valves, PRC spring kit, & decking to 64cc chambers. This cylinder head configuration featured stock chambers to help get the compression back to stock.
Valve drop on the 6.2l heads after decking to 64cc is about .140 on the intake side. Hopefully that info will help you guys do some calculating on what kind of camshafts can be installed without flycutting. For the guys wanting to run big camshafts with the 6.2l heads, we will be offering flycutting tools for the 6.2l valve sizes very shortly!
Peak gains of just about 50rwhp from headers & heads isn't bad at all considering it's a stock camshaft & the baseline numbers didn't even have cats or mufflers!
Run 1: 06 C6 WITHOUT CATS & WITHOUT MUFFLERS
Run 2: Installed Kooks Headers W/ Cats, Borla Exhaust, & PRC 6.2l CNC Heads
While doing the header installation I went ahead & installed the PRC 6.2l CNC ported heads, & L76 intake to match it! The PRC cylinder heads is setup with stock 6.2l valves, PRC spring kit, & decking to 64cc chambers. This cylinder head configuration featured stock chambers to help get the compression back to stock.
Valve drop on the 6.2l heads after decking to 64cc is about .140 on the intake side. Hopefully that info will help you guys do some calculating on what kind of camshafts can be installed without flycutting. For the guys wanting to run big camshafts with the 6.2l heads, we will be offering flycutting tools for the 6.2l valve sizes very shortly!
Peak gains of just about 50rwhp from headers & heads isn't bad at all considering it's a stock camshaft & the baseline numbers didn't even have cats or mufflers!
Run 1: 06 C6 WITHOUT CATS & WITHOUT MUFFLERS
Run 2: Installed Kooks Headers W/ Cats, Borla Exhaust, & PRC 6.2l CNC Heads
__________________
Jason
Co-Owner, Texas Speed & Performance, Ltd.
2005 Twin Turbo C6
404cid Stroker, 67mm Twins
994rwhp/902lb ft @ 22 psi (mustang dyno) www.Texas-Speed.com
Jason
Co-Owner, Texas Speed & Performance, Ltd.
2005 Twin Turbo C6
404cid Stroker, 67mm Twins
994rwhp/902lb ft @ 22 psi (mustang dyno) www.Texas-Speed.com
05-03-2007, 04:26 PM
#4
With .140" of valve drop, you should be able to run a mid 230s duration cam. More than enough! Great news. 
__________________
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
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
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
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
05-04-2007, 04:32 PM
#7
Just give me a list of what data you want & I'll post it up for you.
__________________
Jason
Co-Owner, Texas Speed & Performance, Ltd.
2005 Twin Turbo C6
404cid Stroker, 67mm Twins
994rwhp/902lb ft @ 22 psi (mustang dyno) www.Texas-Speed.com
Jason
Co-Owner, Texas Speed & Performance, Ltd.
2005 Twin Turbo C6
404cid Stroker, 67mm Twins
994rwhp/902lb ft @ 22 psi (mustang dyno) www.Texas-Speed.com
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05-05-2007, 06:48 AM
#10
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Why do all that work and not swap out the cam? Worried about PTV clearence? Or did the owner just want stock idle/ driving manners. I would say a smaller cam (226/226 on 114 lift around .550/.550) would still drive and idle around stock and pick up probably over 20rwhp. Just some thoughts. Also is there any future for aftermarket valves and/or a 3.9 inch bore setup. Thanks
05-05-2007, 08:30 PM
#11
I installed a 228/228 114 camshaft in the car & it made 440rwhp & 405lb ft. I'll try to post the graph, but mainly I was wanting to see if the car could make 400rwhp in a automatic with a stock cam 
__________________
Jason
Co-Owner, Texas Speed & Performance, Ltd.
2005 Twin Turbo C6
404cid Stroker, 67mm Twins
994rwhp/902lb ft @ 22 psi (mustang dyno) www.Texas-Speed.com
Jason
Co-Owner, Texas Speed & Performance, Ltd.
2005 Twin Turbo C6
404cid Stroker, 67mm Twins
994rwhp/902lb ft @ 22 psi (mustang dyno) www.Texas-Speed.com
05-06-2007, 12:55 AM
#13
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Originally Posted by Jason 98 TA
I installed a 228/228 114 camshaft in the car & it made 440rwhp & 405lb ft. I'll try to post the graph, but mainly I was wanting to see if the car could make 400rwhp in a automatic with a stock cam
peace
