i was wondering what cam you would recommend for this set up i a working on doing? i don't want a real choppy idle. but some is ok.

2000 gmc sierra Z71 5.3 3.73 ECSB

underdrive pulley
160 stat
gms maf
k&n fipk
true dual no cats
shorty headers
flex-a-lite fans
tt3000
comp cam 26918 springs
push rods
port and polish
nelson tuning
and maybe some wet shot after this is all done and over with.

and what kind of times do you think i can get with these mods?

 

Toss the GMS MAF.

 

Try a Comp 212/218.522/529 114 for some really good driving manners and a decent power increase.

 

why do that?

 

Not worth it.

 

i already got it. look in my sig. ifound out now that is really isn't worth it because when i put it on i didn't notice anything.

i already have all the stuff in my sig plus a underdrive pulley.

 

i was looking at these cams what do you think i can expect. and if someone could explain exactly what all the numbers mean that would help too. im way to clue less on the cams. how bad do you think my idle would be with these cams.

adv in/exh @.050" in/exh @valve in/exh @lope in/exh lope sep int C/L
282,287 218, 221 .526", .534" .309,.314 116sep 112 int C/L
OR
287,298 222,230 .534", .544" .314, .320 114 sep 110 int C/L

 

I wouldn't go much bigger than a 216/220 if you want good street manners in a 5.3 and that cam would require some custom tuning to idle properly.

 

how much harder would the first cam i listed be to tune? i plan on getting a tune by nelson as soon as i get the cam. how much bigger is taht cam then a 216/220?

 

If you are going with a Nelson tune go with the 216/220,move your full throttle shifts to about 6400 rpm and holdon tight.