Cam Specs, what Can I Expect
Thread Starter
Pro
Joined: Jul 2011
Posts: 543
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From: Houston TX
Cam Specs, what Can I Expect
If my research is accurate, it looks like the stock LS3 engine cam has the following specs.
0.551/0.524-inch lift, 204/211-degree duration, 117 LSA
The cam I'll have in the car after install should have roughly:
0.6xx-inch lift, 23x/24x-degree duration, 113 LSA.
What types of performance changes can I expect as far as idle quality, low vs high end torque, and width of power curve? Granted, the car already has corsa exhaust, kook's long tube headers, a 2500 rpm stall, and GMPP 5364 heads.
0.551/0.524-inch lift, 204/211-degree duration, 117 LSA
The cam I'll have in the car after install should have roughly:
0.6xx-inch lift, 23x/24x-degree duration, 113 LSA.
What types of performance changes can I expect as far as idle quality, low vs high end torque, and width of power curve? Granted, the car already has corsa exhaust, kook's long tube headers, a 2500 rpm stall, and GMPP 5364 heads.
Last edited by Cromagnum; Aug 17, 2011 at 09:31 AM.
Le Mans Master
Joined: Dec 2005
Posts: 6,999
Likes: 1,685
From: Southeast TX
Assuming middle 230's and 240's, you're looking at 14 degrees of overlap. That pretty well equals a rough idle and your car rocking at stop lights. Should make good power.....just not too much below 3000 rpm. Pull really hard on the top end. You'll need a good valve train and some RPM's to take advantage of it. That's pretty close to what I'd consider too big to fool with on the street. Some like it. Not for me
Race Director
Joined: Mar 2007
Posts: 11,331
Likes: 18
From: Missouri City Texas
If my research is accurate, it looks like the stock LS3 engine cam has the following specs.
0.551/0.524-inch lift, 204/211-degree duration, 117 LSA
The cam I'll have in the car after install should have roughly:
0.6xx-inch lift, 23x/24x-degree duration, 113 LSA.
What types of performance changes can I expect as far as idle quality, low vs high end torque, and width of power curve? Granted, the car already has corsa exhaust, kook's long tube headers, a 2500 rpm stall, and GMPP 5364 heads.
0.551/0.524-inch lift, 204/211-degree duration, 117 LSA
The cam I'll have in the car after install should have roughly:
0.6xx-inch lift, 23x/24x-degree duration, 113 LSA.
What types of performance changes can I expect as far as idle quality, low vs high end torque, and width of power curve? Granted, the car already has corsa exhaust, kook's long tube headers, a 2500 rpm stall, and GMPP 5364 heads.
Assuming low to mid 230/240 you'll be making good power over 3k rpms and peak probably mid 6k. The cam going in mine is a 238/242 110 and should come on like a freak around 4k.
What lobes? Makes a big difference as well if their LSK lobes or an endurance lobe like EPS
Last edited by FloydSummerOf68; Aug 17, 2011 at 09:58 AM.
Thread Starter
Pro
Joined: Jul 2011
Posts: 543
Likes: 58
From: Houston TX
Well, its an England Green Mayhem II cam with (as close as I could figure out) specs listed. As far as I understand, the duration is low 230's / low 240's. I know the lift is pretty high and LSA is not terribly narrow.
Drifting
Joined: Oct 2006
Posts: 1,608
Likes: 7
From: DELRAY BEACH FLORIDA
St. Jude Donor '10-'13
MY guess...around 500HP. That torque converter may have to re stalled to 3200-3600 for good driveability.
Thread Starter
Pro
Joined: Jul 2011
Posts: 543
Likes: 58
From: Houston TX
From performance curves I've seen, the torque profile is pretty flat across the power band, so would I necessarily have any issues at all with a 2500 rpm stall?
Last edited by Cromagnum; Aug 17, 2011 at 12:02 PM.
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From: ================== Houston, Texas www.englandgreen.com ================== Necessary Evil™ __________
CI 6-7-8-9-10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14
Stall will be fine. Lift is .630 and it's on a 113LSA. Expect circa 440+rwhp with your GMPP CNC heads, even with your A6.
Stephen
Stephen
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From: ================== Houston, Texas www.englandgreen.com ================== Necessary Evil™ __________
CI 6-7-8-9-10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14
Cromagnum - 2008 A6 Corvette, EnglandGreen Mayhem II cam, GMPP CNC L92 heads, Stall, Headers, cats, CAI.
493rwhp, 441rwtq.
This is really strong for an automatic!
Drives smooth as silk - shakes like an addict in rehab at idle
493rwhp, 441rwtq.
This is really strong for an automatic!Drives smooth as silk - shakes like an addict in rehab at idle
Last edited by EG@EnglandGreen; Sep 1, 2011 at 11:19 PM.
