LS3 header cam results
#1
Racer
Thread Starter
LS3 header cam results
After reading hundreds of posts about putting cams in LS3s, I finally had one installed in my car. I decided early on that I did not want the low speed bucking and surging that is common with some big cams. What I really wanted was a cam that made big torque gains down low and in the midrange. I wanted it to be fun driving around town in the 3-5k rpm range. I decided to try Comp Cams part# 54-458-11. I had it ground on a 108 ICL with 4 degrees advance. So its 227 intake 235 exhaust on a 112 lsa. Anyway for the rest of the parts I added LG street series headers, an Airaid LS3 intake, and a Corsa Sport exhaust. In addition, the necessary valvetrain and timing chain upgrades were added. The car had the NPP exhaust from the factory and the Airaid was on during the baseline.
The car drives well for a cammed car. I was able lug along in 6th gear at 50 mph without the car getting upset. So I am happy, it didn't make as much horsepower up top like 230+ cam would have but I am pleased with how it beat the stock cam everywhere on the curve.
And of course some idle vids,
The car drives well for a cammed car. I was able lug along in 6th gear at 50 mph without the car getting upset. So I am happy, it didn't make as much horsepower up top like 230+ cam would have but I am pleased with how it beat the stock cam everywhere on the curve.
And of course some idle vids,
#6
Racer
Thread Starter
Yes, I drove it to the gas station about two miles away and all the warnings on the DIC cleared. For some reason I think when you put a car on the dyno it confuses the computer because the back wheels are spinning and the front ones are not?
#9
Safety Car
he did do a "custom cam" " he said he told them how to change the grind. how much fuel does it eat? from the sound of it it might be better with a 114-116 LSA
#10
Safety Car
#12
Melting Slicks
#14
Melting Slicks
power comes in too late for a street car..........unless you're launching the car at 3K all the time.
Anyway........he stated he wanted 3-5k car and that's what he got. It sounds great.
Hopefully I can get my car on the Dyno soon and see what it does. Mine has a modest 9* overlap compared to his 7*.
Anyway........he stated he wanted 3-5k car and that's what he got. It sounds great.
Hopefully I can get my car on the Dyno soon and see what it does. Mine has a modest 9* overlap compared to his 7*.
Last edited by Speedforhire; 04-15-2015 at 10:02 AM.
#16
Advanced
Personally I'm one who is more interested in tq. as opposed to hp so the numbers reflected on the dyno sheet caught my attention. With that being said and my starting to embark on mods to my LS3 GS I was wondering if anyone else knows of cam profiles that would would yield high tq. #'s.
#17
Melting Slicks
Personally I'm one who is more interested in tq. as opposed to hp so the numbers reflected on the dyno sheet caught my attention. With that being said and my starting to embark on mods to my LS3 GS I was wondering if anyone else knows of cam profiles that would would yield high tq. #'s.
#18
Melting Slicks
#19
Instructor
#20
Melting Slicks
However, 60lbs is NOT typical for a street car idling at 200* ETC. I'll wait for JWELL (the OP) to disclose the setup..........