Cam for my 5.3L

[silverado777]

Looks like x-mas came early this year. My wife and I just went to Loper's Performance and got my new cam, springs, lifters, retainers, valve locks, push rods, and roller rockers. Everything is from COMP cams. The grind number for the cam is G3 XFI261 HR15. 208 212 .554 .558. The rockers are a 1.75 rollers. I have a 05 silverado with LT headers w/ no cats, single 3'' flowmaster super 44 exhaust, CAI, throttlebody spacer, MSD wires, and a custom tune. I am looking for some opinons if this is a good set up or not.

[freemaSSon]

that should be a very nice cam the additional angle on the rocker will help sqeak a little more lift out of it and the reduced valve overlap will run the cylinder pressures up and make a beautiful TQ curve and have a nice pushy feel to it.....

GOOD CHOICE......i like to see a well thought out cam choice soom of the wild choices around here for heavy trucks amuze me.......

your setup will run nice and if you decide to GAS it, will it will turn into a CAGED FREAKIN MONSTER!!!!!!!

COMP CAM....that looks like a BEAUTIFUL cam.....mild lobe, 115 LSA 111 ICL.....dude get an adjustable cam gear and degree that bitch 4 deg. and it will idle i little choppy but be a nasty, nasty LITTLE cam.....most people over cam these LSx motors and have the nasty sound but no go in it......that little cam is a perfect choice....KUDOS to whoever pointed you in that direction....it WILL be a runner i guarantee it!!!!!!!!

[silverado777]

that should be a very nice cam the additional angle on the rocker will help sqeak a little more lift out of it and the reduced valve overlap will run the cylinder pressures up and make a beautiful TQ curve and have a nice pushy feel to it.....

GOOD CHOICE......i like to see a well thought out cam choice soom of the wild choices around here for heavy trucks amuze me.......

your setup will run nice and if you decide to GAS it, will it will turn into a CAGED FREAKIN MONSTER!!!!!!!

COMP CAM....that looks like a BEAUTIFUL cam.....mild lobe, 115 LSA 111 ICL.....dude get an adjustable cam gear and degree that bitch 4 deg. and it will idle i little choppy but be a nasty, nasty LITTLE cam.....most people over cam these LSx motors and have the nasty sound but no go in it......that little cam is a perfect choice....KUDOS to whoever pointed you in that direction....it WILL be a runner i guarantee it!!!!!!!!

Thanks, Thats was exactly what I needed to hear. I've been doing research for about 3 months now. There are so many choices out there, it was hard to make my mind up. Everything cost me about $1400 with a valve cover spacer. Any tips, tricks, ideas or some words of wisdom before I crack into the intsall?

[freemaSSon]

really call the shop you bought from and VERIFY and REVERIFY piston to valve but i'm almost certain that lift range will be A OK for degreeing the cam....it allows you to truely gain from advanced spark timing when matched with valve advance......it will make about 10-15 more ft. lbs. of TQ with the cam degreed which is the feel good part of any mod.......

it sounds to me you have covered all your bases just keep an INTERNAL GURU's number close by when you tear into it......

i am an armchair expert....i am versed in all the combo's but i do not do the internal wrenching, i am in a position to pay the experts for the internal mods and i do the external stuff.....so i would not be the one to caution you on the install part......but as far as your combo i will guarantee you will have track results that far exceed trucks that have MUCH MUCH better dyno graphs......you'll see

[nonecktribe]

thats a good cam...but i would sell the rockers off the stock ones work plenty well...

[txarkitekt]

Any tips, tricks, ideas or some words of wisdom before I crack into the intsall?

Have you ever done a cam swap on a LS motor before? It is easy as Hell honestly...

Use a vlave spring compression tool FOR LS1 MOTORS. If you use something different, you can mess up the rocker bolt threads inside the head. Make sure to have a pen magnet handy to get the valve locks off. You can either pump the cylinder full of air to keep the valves up or turn the crank so that the cylinder you are working on is at TDC. The valve will fall a hair, but it will be picked back up once you get the spring and locks back on.

You need a new crank bolt. Must get it from the Chevy dealer.

Use 7/16" dowel rods in the oil galleys to keep the lifters from falling--and make sure to spin the cam until you hear that each lifter is in the up position before you insert the rods. they need to go all the way to the back of the block.

Make sure to get the timing set before you take the timing chain off. VERY IMPORTANT. Upon reinstall, make sure the nub on the end of the cam is near the 3 o'clock position then put the chain and cam gear back on.

If you have any other questions, ask them on the Live Tech Help Shoutbox on the forum's main page or PM one of us. We'll be glad to help.

[silverado777]

that should be a very nice cam the additional angle on the rocker will help sqeak a little more lift out of it and the reduced valve overlap will run the cylinder pressures up and make a beautiful TQ curve and have a nice pushy feel to it.....

GOOD CHOICE......i like to see a well thought out cam choice soom of the wild choices around here for heavy trucks amuze me.......

your setup will run nice and if you decide to GAS it, will it will turn into a CAGED FREAKIN MONSTER!!!!!!!

COMP CAM....that looks like a BEAUTIFUL cam.....mild lobe, 115 LSA 111 ICL.....dude get an adjustable cam gear and degree that bitch 4 deg. and it will idle i little choppy but be a nasty, nasty LITTLE cam.....most people over cam these LSx motors and have the nasty sound but no go in it......that little cam is a perfect choice....KUDOS to whoever pointed you in that direction....it WILL be a runner i guarantee it!!!!!!!!

I finally got my cam installed. However, I'm kinda disappointed in it. I guess I expected too much out of it. I notice some decent power at high RPM, but my truck is a dog off the line. I haven't got my truck re-tuned yet, I'll get that next week. Hopefully the tune will wake it up a bunch. Any ideas? Did i do something wrong?

[RedHeartbeat]

what's this cam in? C1500, C2500, C3500? 60e 65e 80e? Do you have a converter? If not, you might start saving up for one. What gears do you have? Have you dyno'd the setup before the cam install?

[silverado777]

what's this cam in? C1500, C2500, C3500? 60e 65e 80e? Do you have a converter? If not, you might start saving up for one. What gears do you have? Have you dyno'd the setup before the cam install?

Its a 2wd 1500 with a 4L60e, stock converter, 3.73 gears. Never had it dyno'd just a custom tune by black bear performance.

[RedHeartbeat]

regular or extended cab? Tons of stereo stuff and subwoofer box? Do you know how much it weighs? What size tires and wheels are you running?