Opinions On this cam
Opinions On this cam I would like to have some input on this cam I had specked for my combo, The setup is an LS3 with a 4.00 stroke, 416CI, 12.5 pistons, stock LS3 heads and intake, Its going in a C5 with an A4, 3800 stall, 3.42 gears. Any input would be greatly appreciated.
Lee
Cam Valve Events 0.006 0.050 0.200
Intake Duration - ID 294 239 158 13050R HUC lobe .621"
Exhaust Duration - ED 306 251 169 13053R HUC lobe .632"
Lobe Center Angle - LSA 114+2
Intake Centerline - ICL 112
Intake Valve opens - IVO 35 7.5 -33 BTDC (- indicates ATDC)
Intake Valve closes - IVC 79 51.5 11 ABDC
Exhaust Valve Opens - EVO 89 61.5 20.5 BBDC
Exhaust Valve Closes - EVC 37 9.5 -31.5 ATDC (- indicates BTDC)
Exhaust Centerline - ECL 116 116 116
Overlap 72 17 -64.5 degrees
Lee
Cam Valve Events 0.006 0.050 0.200
Intake Duration - ID 294 239 158 13050R HUC lobe .621"
Exhaust Duration - ED 306 251 169 13053R HUC lobe .632"
Lobe Center Angle - LSA 114+2
Intake Centerline - ICL 112
Intake Valve opens - IVO 35 7.5 -33 BTDC (- indicates ATDC)
Intake Valve closes - IVC 79 51.5 11 ABDC
Exhaust Valve Opens - EVO 89 61.5 20.5 BBDC
Exhaust Valve Closes - EVC 37 9.5 -31.5 ATDC (- indicates BTDC)
Exhaust Centerline - ECL 116 116 116
Overlap 72 17 -64.5 degrees
so if im reading your info correctly the cam is a 239/251 .621"/.632" on 114lsa
well i will say it will sound badass but im not to sure of how it will pull on the streets down low especially with the 3.42 gears. Seems to me to be a lot of overlap for the streets without being dog under 3k. i know you have the ci to support it but still. what do you do with this car (toy/dd/ect)?
well i will say it will sound badass but im not to sure of how it will pull on the streets down low especially with the 3.42 gears. Seems to me to be a lot of overlap for the streets without being dog under 3k. i know you have the ci to support it but still. what do you do with this car (toy/dd/ect)?
TECH Enthusiast
Joined: Jan 2010
Posts: 578
Likes: 4
From: REALITY
so if im reading your info correctly the cam is a 239/251 .621"/.632" on 114lsa
well i will say it will sound badass but im not to sure of how it will pull on the streets down low especially with the 3.42 gears. Seems to me to be a lot of overlap for the streets without being dog under 3k. i know you have the ci to support it but still. what do you do with this car (toy/dd/ect)?
well i will say it will sound badass but im not to sure of how it will pull on the streets down low especially with the 3.42 gears. Seems to me to be a lot of overlap for the streets without being dog under 3k. i know you have the ci to support it but still. what do you do with this car (toy/dd/ect)?
Why so much cam?
Definitley over camming the car for street duty.
The car is a street/strip car, Not a Daily. I had Pat G spec it for me and gave him all the info on the car. It will also have some nitrous run through it on occasion. I wish I would of ask this question before I had it ground now.
Lee
Lee
Staging Lane
Joined: Sep 2011
Posts: 58
Likes: 0
From: Northeast Georgia
It should be a great cam for the spray, still decent NA. Pretty aggressive for the street but maybe okay since you have a pretty high stall converter. Definitely gonna pull up top, probably pretty soggy down low.
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Brett Foote TECH Enthusiast
Joined: Jan 2010
Posts: 578
Likes: 4
From: REALITY
TOO MUCH OVERLAP AND REVERSION. Just like I told you before. If you would get your overlap and reversion in check you would make more power with your combos but you are listening to people who have said they only make on average 460rwhp with these heads.
Especially for a street car with 3.42 gears A4. He is not going to ride around on spray 99% of the time.
If he installs the cam, then he should take it to Pat G and have him tune it for him as well.
I still say he is going overboard. There are other issues that come with that much lift, that dome piston etc. I don't think the OP is ready to deal with the constant maintenance.
You don't order that kind of cam then have second thoughts.
Definitely not too much cam for a strip-oriented street car. 17 degrees of overlap in a 416 is equivalent to 10 degrees of overlap in a 6.2L LS3 and 6 degrees of overlap in a 5.7L LS1. None of those overlap numbers would be considered excessive in the smaller engine. Amazing how nicely cubes gobble up the overlap. 
The lobes are not high maintenance lobes. They are HUC lobes which are a marine style lobe made for exceptional valve control and long spring life. They are not to be confused with fast LSL/LSR lobes. This will be a great cam for the combo. Seen it make killer power time and time again.
The lobes are not high maintenance lobes. They are HUC lobes which are a marine style lobe made for exceptional valve control and long spring life. They are not to be confused with fast LSL/LSR lobes. This will be a great cam for the combo. Seen it make killer power time and time again.
__________________
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.
Definitely not too much cam for a strip-oriented street car. 17 degrees of overlap in a 416 is equivalent to 10 degrees of overlap in a 6.2L LS3 and 6 degrees of overlap in a 5.7L LS1. None of those overlap numbers would be considered excessive in the smaller engine. Amazing how nicely cubes gobble up the overlap.
The lobes are not high maintenance lobes. They are HUC lobes which are a marine style lobe made for exceptional valve control and long spring life. They are not to be confused with fast LSL/LSR lobes. This will be a great cam for the combo. Seen it make killer power time and time again.
The lobes are not high maintenance lobes. They are HUC lobes which are a marine style lobe made for exceptional valve control and long spring life. They are not to be confused with fast LSL/LSR lobes. This will be a great cam for the combo. Seen it make killer power time and time again.
I normally add 5-7 degrees to my events and overlap when I go from a cam for a 3.622" to one for a 4" stroke and it seems you do too.
The longer stroke will increase piston dwell time at tdc and bdc which will help eat up duration and overlap. That cam is by far not too much for a 416. I have seen similar cams in max effort 6.2's.
TOO MUCH OVERLAP AND REVERSION. Just like I told you before. If you would get your overlap and reversion in check you would make more power with your combos but you are listening to people who have said they only make on average 460rwhp with these heads.
Especially for a street car with 3.42 gears A4. He is not going to ride around on spray 99% of the time.
If he installs the cam, then he should take it to Pat G and have him tune it for him as well.
I still say he is going overboard. There are other issues that come with that much lift, that dome piston etc. I don't think the OP is ready to deal with the constant maintenance.
You don't order that kind of cam then have second thoughts.
Especially for a street car with 3.42 gears A4. He is not going to ride around on spray 99% of the time.
If he installs the cam, then he should take it to Pat G and have him tune it for him as well.
I still say he is going overboard. There are other issues that come with that much lift, that dome piston etc. I don't think the OP is ready to deal with the constant maintenance.
You don't order that kind of cam then have second thoughts.
I would like to have some input on this cam I had specked for my combo, The setup is an LS3 with a 4.00 stroke, 416CI, 12.5 pistons, stock LS3 heads and intake, Its going in a C5 with an A4, 3800 stall, 3.42 gears. Any input would be greatly appreciated.
Lee
Cam Valve Events 0.006 0.050 0.200
Intake Duration - ID 294 239 158 13050R HUC lobe .621"
Exhaust Duration - ED 306 251 169 13053R HUC lobe .632"
Lobe Center Angle - LSA 114+2
Intake Centerline - ICL 112
Intake Valve opens - IVO 35 7.5 -33 BTDC (- indicates ATDC)
Intake Valve closes - IVC 79 51.5 11 ABDC
Exhaust Valve Opens - EVO 89 61.5 20.5 BBDC
Exhaust Valve Closes - EVC 37 9.5 -31.5 ATDC (- indicates BTDC)
Exhaust Centerline - ECL 116 116 116
Overlap 72 17 -64.5 degrees
Lee
Cam Valve Events 0.006 0.050 0.200
Intake Duration - ID 294 239 158 13050R HUC lobe .621"
Exhaust Duration - ED 306 251 169 13053R HUC lobe .632"
Lobe Center Angle - LSA 114+2
Intake Centerline - ICL 112
Intake Valve opens - IVO 35 7.5 -33 BTDC (- indicates ATDC)
Intake Valve closes - IVC 79 51.5 11 ABDC
Exhaust Valve Opens - EVO 89 61.5 20.5 BBDC
Exhaust Valve Closes - EVC 37 9.5 -31.5 ATDC (- indicates BTDC)
Exhaust Centerline - ECL 116 116 116
Overlap 72 17 -64.5 degrees
