Thinkin about an ls6 cam in my work truck. the little 4.8 needs some extra grunt gettin up hills. and considering it still has a warranty i would like a cam will a stock idle and that would run on the stock tune if i take it in for a warranty. i do not know much about it, does it require a different length pushrods? what do i need to convert to a 3 bolt cam? mine is a 1 bolt right?

 

i was curiouse about the LS6 cam in the 4.8 as well?

 

i know the NNBS truck 4.8's have LS6 heads on them already so the LS6 cam will be pretty good for it. IIRC u need rods that are .050" shorter (7.350) because the LS6 cam supposedly has a smaller base circle cam but im not 100% sure

 

I am running stock length pushrods in mine. Also low end grunt will be hurt top end will be improved.

Dustin

 

Im pretty sure they need to be longer for a smaller base circle.

Dustin

 

thats what i thought. i may try an LS6 cam i didnt know the nnbs ones came with LS6 heads already though?

 

idk, but yeah, i am sure longer rods are what is "needed" but i think .050 can be taken up by the lifters haha. I have had to problems shifting at 6300.

Dustin

 

ive yet to hit wot with it.. haha

 

LS6 cam has a .050 smaller base circle (diameter), so "IF" you wanted to keep preload the same on the lifters you need .025 longer rods, but they are not necessary, right Dustin?

 

howd your motor idle with this cam. did it ever run with the stock tune?