Truck is a 2006 4.8 5-speed.
I've searched threads and can't really find anything complete. I'm wanting to do a cam swap (looking at a 224r or 228r) and a 100 shot. Are either of these cam's going to be worth anything with spray? Or is there one that would work better? I just bought 2005 silverado's Hurst shifter with the ****/ spray button combo, so what would be the best way to run with it? Have it hooked to the button or have a WOT switch?

 

hmm that cam sounds kinda big for a 4.8.... as far as the buttton goes i would do it on a WOT switch so when you let off to shift you wont be hurting your tranny as much!@

 

I'd look at maybe the 220, it's anopther proven cam and pretty good for the 4.8L. As far as the nitrous part, the cam really doesn't matter until you get into a bigger shot (200ish). I've been told this by a number of people, because I asked the same thing haha.

 

If yall think those are big you should see the one I got custom spec'd... Lol. Yall would **** bricks...

So a wot switch and a 100 shot... It's sounding nice

 

Anyone have any more comments or thoughts? I'm looking to order parts soon. Cam first, or nitrous first?

 

cam is power all the time and nitrous is only when spraying, but the nitrous will be a bigger gain, your choice.

come on now, you got to tell us what you had custom spec'd out for a cam

TR220 is a great cam for a 4.8

 

I can't. I was sworn to secrecy. lol. I'm thinking about running it though... I'm just worried it won't like stock heads since it's a high lift...

 

how about just the duration?

with high lift it just means that it will flow good so far the fall off. but it also means you need stiffer valve springs. maybe even duals.

 

Those cams are fine its in the tune and the supporting mods and a bigger cam would work as well but may not be all its cracked up to be esecially in a 4.8 but then again it has to do with what else is done.

Get your truck dialed in N/a with whatever cam you choose then you will/should only have to make slight adjustments uasually to the air/fuel mixture and timing for the spray.

 

The lift on the cams are both .58x, are the PAC beehives (.600 max) enough or do I need something more?