Thanks for all of the help so far guys. Has anyone found one that works that they are actually running a 5.3?

 

I personally am not convinced as to the merits of this cam. There was one fellow on here that posted some before and after dyno's of his 4.8/5-spd with all bolt-ons vs just adding that specific cam. He lost torque big-time in the lower rpm's all the way up to 3k-3.5k rpm. I'd try to find the graphs, but I know I got them bookmarked at home.

I know we are talking 5.3 in this thread, but whatever the valve timing differences are between the low-lift and high-lift, coupled with the slight difference in LSA, seems to make that high-lift version a dud in my book. From my observations, I know some folks run it, but perhaps not near as many as the low-lift.

 

Do you know anyone who is running/ran any of the cams I've listed?

 

no, not necessarily the ones you listed. The xr260 you listed is very similar to the xr259 I mentioned in one of my previous posts, except that the latter is on a 112lsa and the former is on a 115lsa. For that cam, I'd be choosing the tighter lsa.

If you look some in the internal engine sub-forum, there have been two relatively recent threads about cams in 5.3's, both with dyno graphs I think. One was about the comp xr265, which is the 212/218 low-lift version, and other about the TR220.

:edit
well I couldnt' find both those threads, and some were actually in the engine and exhaust sub-forum. anyway, here's some threads that might be useful from my brief search.

https://www.performancetrucks.net/fo...d.php?t=438267
https://www.performancetrucks.net/fo...d.php?t=439186
https://www.performancetrucks.net/fo...d.php?t=425190

 

I have the 212/218 low lift , 114 lsa, in my 4.8. It has the trailblazer stall, long tubes and a tune. It doesn't really pull until around 3500 rpm, but its still better than the stock cam. I always thought I had a problem with my tune, but now I'm thinking its just the cam.

 

Big heavy 4wd truck....go with something like a 206/212 on a 114 lsa or so with somewhat high lift
It's about torque down low with a truck like this. Dont push the powerband up so high your never using it, it's lifted which im guessing means it's not going to be a track truck. If your looking for gains down low I wouldnt even go as big as the 212/218 (duration wise).

 

I think the 212/218 is deff out. I want something that's going to pull strong right off and through 3500 not just getting started (yes, I know a stall would help with that, but I want to stick to the cam for now).

Has anyone had any luck with that Crane Truck cam? It's specs look pretty solid for a very usable powerband....

BTW, thanks to everyone who has posted thus far. I really appreciate all the help.

 

That crane cam on a 114 would give you the most off-idle.

 

Which Crane Truck cam, I googled it and didn't come up with much?

 

the one in the OP,

Crane Truck Cam #1449545 Duration @ .050" lift: 200/208 (int/exh) Valve lift: .502"/.502" (int/exh)