Cams
Thread Starter
Team Owner
Joined: Jun 1999
Posts: 71,447
Likes: 6
From: Miami bound
CI 4-5-6-7 Veteran
Cams
I've got a line on a couple of cams, but I have no idea how to read the numbers. My car's only mildly modded: Vram, headers, and a tune. Would either of these be worth the trouble to install?
.591 .569 on a 112 or
224/228 .581/.588 114
For that matter, WTF does any of it mean. I know lift/duration/angle, but what does it translate to in the real world? The car isn't a daily driver, but I want to be able to jump in and go whenever I feel the need.
.591 .569 on a 112 or
224/228 .581/.588 114
For that matter, WTF does any of it mean. I know lift/duration/angle, but what does it translate to in the real world? The car isn't a daily driver, but I want to be able to jump in and go whenever I feel the need.
Supporting Tuner
Joined: Sep 2004
Posts: 51,896
Likes: 39
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
Numbers : the first 2 numbers 224/228 are the Intake/Exhaust duration - or how long the intake and exhaust valve are kept open. The larger the number, the more radical (from stock) the cam is.
.591/.569 are the valve lift numbers - or how wide the valves are opened. The real concern with lift is piston to valve interference and spring failure. I'll get back to that in a second.
The 114 is the Lobe Separation Angle. The smaller the number, the more radical the idle (lope) and the less vacuum you have at low rpm. 114 is considered wide, 112 is medium and below 112 is narrow. Unless you love to be shaken and not stirred at idle, stick with 114 or wider.
What does it all mean?
That means it's a small cam
and no, it's not worth installing, IMHO. It also means that those specs would be more at home with a turbocharged motor and not a N/A motor.
EG
.591/.569 are the valve lift numbers - or how wide the valves are opened. The real concern with lift is piston to valve interference and spring failure. I'll get back to that in a second.
The 114 is the Lobe Separation Angle. The smaller the number, the more radical the idle (lope) and the less vacuum you have at low rpm. 114 is considered wide, 112 is medium and below 112 is narrow. Unless you love to be shaken and not stirred at idle, stick with 114 or wider.
What does it all mean?
That means it's a small cam
and no, it's not worth installing, IMHO. It also means that those specs would be more at home with a turbocharged motor and not a N/A motor.EG
Last edited by EG@EnglandGreen; Aug 4, 2005 at 12:00 PM.
Safety Car
Joined: Dec 2003
Posts: 3,626
Likes: 1
From: Fremont California
Originally Posted by EnglandGreen
Numbers : the first 2 numbers 224/228 are the Intake/Exhaust duration - or how long the intake and exhaust valve are kept open. The larger the number, the more radical (from stock) the cam is.
.591/.569 are the valve lift numbers - or how wide the valves are opened. The real concern with lift is piston to valve interference and spring failure. I'll get back to that in a second.
The 114 is the Lobe Separation Angle. The smaller the number, the more radical the idle (lope) and the less vacuum you have at low rpm. 114 is considered wide, 112 is medium and below 112 is narrow. Unless you love to be shaken and not stirred at idle, stick with 114 or wider.
What does it all mean?
That means it's a small cam and no, it's not worth installing, IMHO. It also means that those specs would be more at home with a turbocharged motor and not a N/A motor.
EG
.591/.569 are the valve lift numbers - or how wide the valves are opened. The real concern with lift is piston to valve interference and spring failure. I'll get back to that in a second.
The 114 is the Lobe Separation Angle. The smaller the number, the more radical the idle (lope) and the less vacuum you have at low rpm. 114 is considered wide, 112 is medium and below 112 is narrow. Unless you love to be shaken and not stirred at idle, stick with 114 or wider.
What does it all mean?
That means it's a small cam
and no, it's not worth installing, IMHO. It also means that those specs would be more at home with a turbocharged motor and not a N/A motor.EG
Thank you for posting 
Le Mans Master
Joined: Jul 2004
Posts: 8,142
Likes: 0
From: Time is a great teacher. Unfortunately, it kills all its pupils.
Cruise-In VIII Veteran
St. Jude Donor '07
Originally Posted by AU N EGL
EG
What effect do the different cams have on HP vs torque ??
I would prefer to have great low end torque to get out of corners and up to speed vs top end speed.
TIA
What effect do the different cams have on HP vs torque ??
I would prefer to have great low end torque to get out of corners and up to speed vs top end speed.
TIA
Melting Slicks
Joined: Dec 2004
Posts: 2,322
Likes: 2
From: New York NY
Cruise-In VI Veteran
St. Jude Donor '05
http://ls1howto.com/index.php?article=23
here is a good link to explain the basics.
Longer duration (in degrees) will produce more power. Lower lsa will decrease quality of your idle (meaning it will be very choppy and rough) and also increase power.
here is a good link to explain the basics.
Longer duration (in degrees) will produce more power. Lower lsa will decrease quality of your idle (meaning it will be very choppy and rough) and also increase power.
Supporting Tuner
Joined: Sep 2004
Posts: 51,896
Likes: 39
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
Originally Posted by AU N EGL
EG
What effect do the different cams have on HP vs torque ??
I would prefer to have great low end torque to get out of corners and up to speed vs top end speed.
TIA
What effect do the different cams have on HP vs torque ??
I would prefer to have great low end torque to get out of corners and up to speed vs top end speed.
TIA
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Team Owner
Joined: May 2003
Posts: 23,480
Likes: 9
From: East Meadow NY
St. Jude Donor '12
Originally Posted by 03Ragtop
I've got a line on a couple of cams, but I have no idea how to read the numbers. My car's only mildly modded: Vram, headers, and a tune. Would either of these be worth the trouble to install?
.591 .569 on a 112 or
224/228 .581/.588 114
For that matter, WTF does any of it mean. I know lift/duration/angle, but what does it translate to in the real world? The car isn't a daily driver, but I want to be able to jump in and go whenever I feel the need.
.591 .569 on a 112 or
224/228 .581/.588 114
For that matter, WTF does any of it mean. I know lift/duration/angle, but what does it translate to in the real world? The car isn't a daily driver, but I want to be able to jump in and go whenever I feel the need.
The first came looks like it was for a FI car, so probably not a good choice unless you are going that way in the future.
Chris
Supporting Tuner
Joined: Sep 2004
Posts: 51,896
Likes: 39
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
Originally Posted by AU N EGL
What??? You didn't stay at a Holiday Inn Express??? Welll .....
Drifting
Joined: Dec 1999
Posts: 1,315
Likes: 27
From: Central Florida
Originally Posted by EnglandGreen
That means it's a small cam and no, it's not worth installing, IMHO.
EG
and no, it's not worth installing, IMHO. EG
a great cam. Lots of torque at low speeds. I use the car for autocross
and so far I am very happy with it. ( I do have LS6 heads/headers)
Russ
Thread Starter
Team Owner
Joined: Jun 1999
Posts: 71,447
Likes: 6
From: Miami bound
CI 4-5-6-7 Veteran
Originally Posted by Monks
I just installed a 224/228 581/588 114 in my 6 speed FRC and it is
a great cam. Lots of torque at low speeds. I use the car for autocross
and so far I am very happy with it. ( I do have LS6 heads/headers)
a great cam. Lots of torque at low speeds. I use the car for autocross
and so far I am very happy with it. ( I do have LS6 heads/headers)