JakeFusion

iTrader: (7)

That EPS cam will work with stock stall.

And the PRC 243s would be fine... with beehive springs to boot.

See the above dyno where with untouched stock 243s on a 5.7L it did 430/415. The 6L will do better... especially if the 243s are ported. No reason to go for something that isn't proven just because the valve events math say it will work. The 222/226 on a 5.7L with 10.5:1 did 415rwtq and drives like stock.

4x4Sierra2500

iTrader: (6)

I'm looking at all the options, I wouldn't mind decent size cam, I was just looking for as much input as I can get. My truck is heavy as crap with all the extra stereo, dual alts, heavy tube bumpers, and full size spare, along with the 4wd. Just worried about the powerband being down nice and low, with literal stump pulling torque, as I do actually pull stumps with it on occasion.
Also looking at used 243s, and doing a bowl blend and polish myself. Most of my experience is in porting intake manifolds though. The more I save, the more money for the other projects.

whatsa347

iTrader: (6)

I vote used maggie

4x4Sierra2500

iTrader: (6)

I'm pretty sure I will eventually. I just have to pull the heads anyway.

4x4Sierra2500

iTrader: (6)

Bump. I just bought the 243s, they will be mildly hand ported, and shaved down a little to keep compression up with my dished pistons. I'd like to use the LS9 valve springs from lingenfelter, they say they are good to .580 lift, but i'd like to stay around .550ish. I am just trying to sort out all the different ideas everyone has on the LSA and ground-in adavance that would be best for low end. I don't care about the idle or anything, as long as the power is there. I'd even consider a used GM cam to save money, even if it left a little power on the table. Also, I have the stock lq4 truck intake on it, with a crude plug on the EGR port. Is there another option that may work better, or should I just leave it?

99Bluz28

iTrader: (35)

Even the mild aftermarket cams are most likely going to have more aggressive cam lobes than a factory cam, so I'd at least go with a set of PAC1218 beehive valve springs. As far as using a different factory cam for better low end, you're already running it. For your intended use I'd also stick with the truck intake on it.

4x4Sierra2500

iTrader: (6)

Thanks. If I had the 01+ cam, I'd probably leave it alone, but the 99-00 cam is just so small, I can't believe it isn't costing me quite a bit of easy power down in the 1200 or so rpm range. I was looking at the ls9 springs just so that I can reuse my factory retainers and locks. I'll look at the PAC1218s, as I kept reading bad things about the recent batches of Comp 918s.

GMCtrk

iTrader: (23)

Whoever mentioned the Crane 210/218 is spot on. Don't go any bigger than that.

The 222/226 cam is absolutely incorrect for your app.

Try searching over on the truck side, you'll get better info.

4x4Sierra2500

iTrader: (6)

I was leaning towards that cam, or one very similar. I've been to a lot of the truck sites, but they seem to be more performance oriented, it's all over the map when it comes to recommendations. Even if I have a custom cam ground, I want to understand what I'm getting. From what I've read, a cam with small enough duration to allow low overlap with a tight LSA is what I'm looking for, something in the 210 range with a 114ish LSA, with around +4 advance. But then there are lobe considerations as well, I think a fast ramp will be good, but what could I get away with considering my application? I doubt I'll ever rev it real hard, but I don't want to be changing valve springs every 20,000 miles either.

garygnu

you can reuse stock Gm retainers and locks with most after market springs .you don't buy springs by how much lift they can handle .you buy springs buy what lobe lift rate they can handle .some one else will better explain this better .use pac 1518 springs ,single beehive springs that will handle some of the cams you are looking at .don't get cheap on valve train parts ,it will cost you big .

dirty_old_chevy

I run a 216/218 on 108+2 in my lq4 with 799 heads. Great torque. Seems to be an identical powerband to the original 2002 stock cam, just bumped up everywhere. Torque is about the same as stock up to 2500 rpm, then the new cam just wants to kick ***. Also poops out around the same rpm. Actually makes sense because it has the same IVC and EVO as the stocker. If I were to do it again, I would run 317's and a cam that had a IVC about 2 degrees earlier, so it would be less picky with fuel.

99 2500

My pickup is a 1999 2500 4x4 ext cab , long bed as heavy as they got in 99. Have had this for almost 14 yrs now and use it to move approximate 2300 pound payload twice a month through a hilly terrain. First time I swapped stock cam was in 2004 with a comp cam 212/218,114+4 .560 lift -- lots of power improvement , but have gone through a 6 custom comp cams all around this size within 180,000 miles and decided to try the crane cam 210/218 114+4 .550 lift and can't believe the amount of torque this cam has at 2000 rpms compared to the previous comp cams. It gets the heavy vehicle going much better.