CzerniS17

I'm looking for a cam to put in my 2006 ECSB Silverado with the L59 5.3 (Flex fuel). It's a 4x4, and I'm leveled on 33's on 20x10 Ultra Predators. I currently only have an MBRP cat-back exhaust with a K&N intake. I'll probably be adding long-tubes when I do the cam as well.

I'm looking for something that I can use with either the stock converter, or a really low speed stall (2200-2400), and I came across the Comp Cams LSr line which peaked my interest. I'm shooting for low to mid-range torque and power as that's where I spend most of my time, and I tend to tow and haul a decent amount every now and then.

Has anyone ran one of these Comp LSr cams yet? I'm looking at the 54-456-11:54-456-11 - LSR

It looks like it has a pretty high amount of lift, with a low LSA. Comp says it's good for 4.8's and 5.3's looking for torque and drivability. Any insight on this cam would be great, along with any recommendation for valve springs. I do know to stay far away from the Comp springs, though!

Thanks in advance!

RedRover

imo, that cam is a little on the big side. look at the 212/218 low lift cam. it can be ran with a stock stall, but would be awesome with a 2400 stall. ls6 valvesprings is what i would run with that cam, super cheap and gm quality. look on ebay for the valvesprings. while your in there i would put in a set of chrome-moly pushrods. you need 7.400" pushrods. this is a proven cam, and the springs are gm quality. i would personally run a 300mm circle d stall with a 2200-2400 stall speed. headers are a must. look at calspeed headers. you will need a custom tune also. ask around locally and go with who u feel will do the best job.

CzerniS17

What would be the downside to going with the LSr with it being bigger? Are there any? Comp lists that cam's RPM range from 1500-6700 RPM. I'm not knocking the 212/218 cam at all, it has definitely come up in my research as being a very proven DD cam. From what I have been able to find, this LSr would have a more usable power range along with more power in general. Plus, I like to be different.

I was also looking at the Circle D 2200-2400 stall. It seems to be the best for what my needs would be. And as far as the tune goes, I have a very good GM-tuner that is somewhat local that I would probably be taking it to (New Era Performance).

RedRover

take the listed rpm range with a grain of salt, if you want to be different, get pat g to spec u a cam. and get a custom grind. the vinci "asp-kicker" cam is a proven cam, and not a ton of people have it. with the lsr cam u listed, you are going to want a 2800+ stall. the 212/218, and the vinci cam i listed would be good cams with a 2200-2400 stall.

Whitecrewcab

iTrader: (2)

That one is a touch big, the one size smaller would be a better choice. It's 215/223 @.050 .604/.610 lift. I have a 218/224 @ .050 in my truck, but mines on a 110 LSA. It would not idle with a stock converter, and a 2400 wouldn't be enough.

CzerniS17

I'm also looking for something that has a nice idle, without it being too choppy (if possible with my goals). It seems that the 212/218 is pretty choppy at idle from all of the vids that I've found. Or is that all in the timing? Also what LSA should I be looking for in the 212/218?

Sorry for all of the questions, I'm still trying to get the hang of this cam stuff.

Whitecrewcab

iTrader: (2)

The 212/218 will have a nice chop if its on a 112 LSA. Timing can make a big difference in idle quality, but once the cam gets beyond a certain overlap, even ramping up the timing can't help. If you get a cam on a 114 LSA, it will not chop as hard, but it will pull better off idle, just not make as much peak torque. Tighter LSA, more chop and higher peak numbers, but the power band is narrower. Wider LSA, less chop, less peak output, but comes on power sooner and has a wider power band. Everybody wants to run the low lift version of these cams, I would go with the high lift. The heads may peak out, but the bigger lift cams get the heads into the meaty part of the lift sooner and keep it there longer.

CzerniS17

Thanks! That helped me a lot with the LSA explanation. It seems that the 212/218 High lift on a 114 LSA is what I'm looking for.

Any ideas on how much power I can expect from the cam? (both horsepower and torque)?

Whitecrewcab

iTrader: (2)

I would guess around 25-30rwhp and probably the same in torque. It really shines when you have all the supporting mods. They compliment each other and make a bigger gain together.

CzerniS17

Thanks!