hope your not going to risk running the 918 springs... its probably a custom grind cam with a split duration...nos loves split duration cams... im running the TSP 228 and its a .588 lift...and it loves the nawwwsss...on a 5.3L that is.

 

i was looking at the PAC 918's not the comp, i'm just concerned about the lift being too close to max on them.

 

too close for comfort, get the double springs..

 

spending some extra coin on some springs above and beyond wouldnt be to bad. but i wouldnt see why they wouldnt work.

 

When you say Nitrous loves split duration cams do you mean more duration on the exhaust vs intake????

 

run in on that button! i have mine wired that way. in place of the WOT switch i just hooked it up on the button. I love it as the 4.8 doesnt make much torque. so to leave the line on street tires u gotta have her up in the RR's and feather the **** outa it to leave nice. I hit the button in 3rd and 4th. Im only spraying a 75 shot, but it makes a world of difference. its all up to your own personal preference. I run a harris speedworks kit and love it

 

who speced the cam and what size was it? the biggest that ive heard in person was a tr224 in a 4.8. that motor THUMPED. search up 01thunder. theres a sound clip of it here somewhere. definately go on a wot switch on your setup so you dont accidently keep the nitrous spraying when you shift.