5-speedSierra

iTrader: (2)

how do you guys think i will like this cam. i want a NOTICEABLE amount of lope but no overkill. this truck is my daily driver so i cant go to big. and i want it to last me a long time dont want to much wear and tear on the valvetrain.

ive been finding it very hard to find sound clips of cammed 4.8s ive heard thunders TR224 and also another 220/224 112lsa cam but nothing really of the cams ive been looking at such as the one stated above or the comp 212/218 114LSA and vinci 047 210/218 114lsa

also i should go w/ 7.4" PR's correct? Rick @ Synergy Motorsports said hed use 7.35" but i always hear 7.4" on the forums here. im going to end up doing cam,springs, and rods. would it be worth it to do rockers while im already in the process or should i just keep the stock ones. thanks

Flyer

iTrader: (1)

7.4 pushrods ...

The cam does nice on 4.8. There is very little lope. You have to pay attention to it or you'll miss it. It will wake up the 4.8 a little. Nothing drastic, but it's not a drastic cam either.

1slow01Z71

iTrader: (36)

7.4 will give you more preload on the lifter and make the valvetrain quieter. That cam would work well with a 3K stall.

Joe Vinci

iTrader: (3)

The 047 cam is a 210/218 112lsa on 531/531 lift. Basically the same cam as a 062 with less lift. It will idle just like the 062 in a 4.8 Joe

Flyer

iTrader: (1)

7.4 is as close to stock as it gets ... that cam has the same base circle. 7.35 will be noisy as hell and about 4 thousandths to short.

This is the voice of experience. It will run better with the 7.4 too.

5-speedSierra

iTrader: (2)

ok well that was easy, looks like 7.4 is it then. just like i thought

now lets talk cams. honestly I dont really know what i'm looking for, i've just read up a bunch on similar people asking the same questions as me, and I kinda narrowed it down by guesswork. I know its not the right way to do things but the way I see it.... any improvement is going to make me happy and im not going to know the difference of what I get and what I could have had.

the only thing i'm trying to stay away from is to agressive of a cam. now back on topic


so were saying the comp 216/220 114 lsa wont have much lope at all. like i said I want to hear the cam hit, so should i look for a similar cam but drop to a 112 LSA?

now the question is....will i notice the 047 any more then the comp? it has less duration, but its also got more lift. and lower LSA. sounds like its a better choice???

5-speedSierra

iTrader: (2)

also remember i've got a manual tranny. no need for stalls. just a good dyno tune in the end.

Flyer

iTrader: (1)

218/224 112

Duration is everything, more so than lift anyways. The LSA will bring the cam in earlier, so the bigger cam will act like a smaller cam with the bigger cam results.

Confused?

4.8redchev

sorry for stealin the thread but i know he has a manual but on an automatic would the 112 lsa be harder the tune with a stock stall? because this summer whenever i port my heads and match the intake i think im going to get a custom grind something like a 216/218 .551/.551 114 lsa id like the 112 for the idle but im most likely going to have the stock stall.

5-speedSierra

iTrader: (2)

flyer could you elaborate on that a little bit. I think I see what youre getting at on that last post,but I think a few of my understandings were mixed up a bit so im not quite getting what youre saying.

im seeing that 218/224 112 lsa but im also thinking about 01thunders truck w/ the 224/224 112LSA and I know it sounds awesome but thats what I mean as overkill for my truck.