Mr. Sandog

Advancing the cam does not gain you any power, it moves the entire powerband further down the powerband (keeping the same shape), so if there was any gap between idle RPM's and the power starting, it would lessen, or be gone.

However, this is more of a concern for automatics with a stock torque converter. You have a manual, so this really should be a non-issue if you install it straight up, dot-to-dot. Just give it a few more revs before letting out the clutch and there is your power.

hirdlej

iTrader: (31)

So no one here thinks that this cam is going to destroy any driveability down low that I had before. My guess is that the 01 LS6 cam will run like a completely stock truck until about 2800 RPM's or so and at that point will drastically increase power over stock. On a stock truck the torque poops out after about 3600 RPM's or so (it does on mine) and I think the new cam should extend the power into the higher RPM range. Am I far off base when I guess this cam should be good for 20 RWHP increase over stock? I plan on having my rev limiter set to 6500 RPM's after the swap. The stock 4.8L bottom end should be able to wind up to 6100 RPM's on a repeated basis and still be reliable I would think as well. Thoughts?

1slow01Z71

iTrader: (36)

01Thunder wound his stock bottom end up all the wya to 7200 and didnt mess anything up. The 4.8s can rev good since they ahve a shorter stroke. You will probably gain 20hp from teh swap. Its a alot of work for 20hp though IMO. I wouldnt say drastically increase power but you will know its there for sure.

zippy

one of my friends has a truck just like yours with the 4.8L and NV3500 with 3.73 gear. you won't have any problem with that cam from what i've experienced. it should drive similar to stock down low and once you get past 4k it should pull like mad to about 6500. you're going to have to do some programming though to get everything out of it.

hirdlej

iTrader: (31)

Now that's what I like to hear, I want the current power I have down low and then when I'm doing 55 MPH behind some granny and do the 5th gear to 3rd gear drop (tach goes to about 3800 RPM's) I want that 4.8 to wind up and keep revving until about 6200 or so where I'll shift out for the next gear. I don't know if any of you guys remember but I'm the one that had the wait4me tune that is currently running at 11.9:1 AFR and only putting a peak of 210 HP to the rear wheels. I put my stock PCM in a couple of days ago in fear I was running too rich and other than having a 100 MPH speed limiter now, I cannot tell a difference in the stock vs wait4me tune running at 11.9:1 AFR. Now that Doug Rippie Motorsports has software to Dyno Tune '04 GM cars/trucks (only went up to '03 a few months ago) I want to see if maybe I can get my money back from the wait4me tune (does jesse give full refunds?) And then take that money and have my truck professionally tuned on the dyno with the new 01 LS6 cam. From what it sounds like, a lot of you think it may be a good choice for my setup. I got the cam with only 18,000 miles on it, brand new BLUE LS6 springs and retainers for only $50. You can't beat that That's why I was so excited in doing the cam swap and then I was up until 2 AM last night reading old threads on how people say the LS6 cam sucks in a truck motor and it got me all worried. Seems like people have either changed their mind or didn't know what they were talking about in the first place. I want some more feedback. I just may go ahead and do this tomorrow.


Joe

nightmarechevy

iTrader: (5)

jow02327 just put one in his 5.3 with 3.73s and without tuning it is running a few tenths faster than with the stock cam. He said it pulls much harder up top. The install is a little time consuming but it would probably be worth it if you can get one cheap and have the time to put it in. I think with a good tune it would really wake up a 4.8 up top and be close to the same down low. Like they said above if you rev it a little higher before letting out the clutch and maybe raise the rev limiter up a little bit you will probably be very happy with the gains.

Mr. Sandog

Just do it.

I don't see how this cam could not work.

With my cam I GAINED EVERYWHERE - including off the line - and lost nothing.

Your cam is so similar to mine it could be it's brother, just a year younger...

Actually, I'm not sure any more lift would be helpful without heads or F/I, so you're golden AFAIC.

I would say 10-15HP all over, and maybe 20HP peak. But it will be noticeable HP, and I think you'll like it.

zippy

the one thing to remember the most about the people that have hated the cam after the install, they are almost all automatic's. if you put that cam in a 4.8L or 5.3L with an auto and a stock torque converter as many seem to do, you'd hate it. a 4.8L and 5.3L with the stock cam need more stall let alone with the cam at hand. the manual trans is what is going to make your setup work.

Okie5.3

iTrader: (1)

only one way to find out...put it in

02sierraz71_5.3

iTrader: (2)

Im with zippy, **** the nay sayers. Itll work fine, the rest is retorical and semantics. I gaurantee you will make more power and cut time off your et and in the end thats all that matters.