i read a thread on here, some ppl said if you upgrade the valvetrain u could maybe push 8k rpms on the 4.8 v8 cuz of its short stroke.

anyone have suggestions on this? i plan on a custom turbosetup for my truck and want to be able to hit liek 7.5-8k rpms with a turbo would be crazy on a v8.

i figure some z06 aftermarket springs adn 1:1.6 rockers...what else should i look into?

 

I would think that to push 8k you'd want to upgrade the bottom end also, but I could be wrong (wouldn't be the first time!) Pretty sure that the factory rockers are 1:7 already

btw, nice lookin truck...got any more pics? (saw one almost just like it here in Jersey recently)

 

For 8K RPM's youd better get some Comp 921 dual springs, titanium retainers, ARP rod bolts, super-light rockers and a prayer.

 

lol guess ill shoot for 7k

all i have is whats on my cardomain page http://www.cardomain.com/id/rook99z71
but this friday me and my friend are taking our trucks out to take pics. he just bought an 05 ext cab colorado 2wd z71 black with the plastic fender flares, looks nice

oh, just found these pics.

 

Ah. So the bearing melting power at 8K on the tach is for slinging mud??

 

i figure rooster tails of mud would be pretty badass

nah i want to take my truck to the track sometime soon. all i have is an intake and dumped dynomax bullet so its almost stock. see how it runs. than do some more to it etc.

think ill just go with a supercharger setup though. with a cam and valve springs and headers and be done with it...or lift it 9"...just can't decide... doh

 

speaking of which how much can the 1s6 valve springs handle. they are monsters compared to my stock 4.8 springs.

 

Aren't the LS6 springs good up to .600 lift or something like that?

 

LS6 spring IMO isnt good for rapping it out to 7000+ I dont think.

 

but what rpm with a stock 4.8 cam. with turbo what rpm before worries of valve float.