Ok guys ive looked around on this site alot and have been a member for alittle while but never post. Here is my current Project a 2003 Silverado SS it had a 408 in it for a while (low compression) but apparently i messed the rings up building it so after i decided i wanted turbo now and not a rebuild/fixed 408 i went ahead and bought a 4.8L to throw in the truck for now with the turbo, turbo set up is a GT-K 1000 (76 with .96ar) with trick performance hot parts and custom DP, I just installed rod bolts and main cap studs in the 4.8 and also have head studs for my 6.0 heads that im gonna polish up, also going ls2 intake for now will upgrade to fast 92 and 225 afr or trick flow heads on the 408, i also plan on running e-85 with a complete new fuel system, this build has been on ls1truck for a while where i post as 408.Luke btw
Here is a vid i made for the truck will make more as the build progresses
http://www.youtube.com/watch?v=ATMCB...e=channel_page
and some pics

studs and rod bolts

TU2 cam from Speed Inc

the 4.8 (80,000 miles)

dug around my tool box and found this! will be going on my tailgate closest to 4.8 i can find

emerald green-color that block, timing cover, intake, ect will be

truck as it sits now

 

Nice!

 

Good luck with the build Luke... I am sure the 4.8 will be just fine. Its been proven to make good power, just stay out of detenation.... You might like so much the 408 might need a different home.

 

ill do my best to keep it out of detonation the e-85 should help a bunch, ive had numerous offers on a new home for the 408 away from me but im not budging lol, i have been wondering how much i will like the set up for on the street, i think it should roll out hard from a 55 or so!

 

Yea, I keep forgetting you are running e85.. I wonder if there is even a need for an intercooler with that being you fuel source.
Also seeing how you are converting to e85 that means you will always need to run that fuel. No swapping in regular premium unless you have a back up tune in case no e85 is around.?

 

yes i will have a back up tune i will be driving it to some towns with no e-85 but it will be a 12psi tune or so just to get me home/around at a slower pace lol

 

Pretty nice truck. Good luck with the build. Sucks you had to pull that 408

 

I think that cam is going to bleed ALOT of boost in that 4.8 and is going to have no low end.

 

who spec'd that cam for you?

 

its a speed inc grind, its one of 4 turbo cams that they sell its 2nd most radical, they have a TU3 that has bigger duration and lift