My 408 is in the works. Here's the list:

Stock crank is being replaced with a Callies 4" stroker
rods replaced by callies rods
ARP Main stds
Pistons replaced with diamond 0.030" overs (dished to 9:1 CR)
cam replaced by a 230/236 .600/.600 114lsa
heads being replaced by APE race heads that flow 337 @ .600 (from memory --
might be wrong on the flow)
pushrods replaced by hardened pushrods
rockers replaced with Harland Sharp 1.7' rollers
ARP L19 head studs
fresh cometic gaskets
44# injectors replaced by 60#ers
stock fuel pump replaced by dual Walbro GSS340 255lph in-tank pumps, one wired to a 5psi hobbs switch
GT67 replaced by GT70 with .96 A/R
Adding FMIC

I was worried about adding a boost referenced FPR on the fuel rail, but it turns out there is already one there Guess the moral of that story is to quit speculating and open the damn hood hehe. An aftermarklet FPR would give me adjustability up to 65psi, but with the hobbs switch on the second GSS340 and with the truck already runnning 58 psi, I'm not sure its worth the extra $250? At least it will be an easy change if I need to do it later.

Hopefully this will be a 750-800 fwhp combo. With the meth and the FMIC, the GN guys are all telling me I will be able to run 18-24psi Parish, still think it will be a 10 second truck? I kinda do

Some of the guys on SilveradoSS.com have suggested looking at the 90mm FAST and 90mm TB. I am thinking I will stick with the truck manifold for now and if it proves to be a big bottleneck, looking into a sheet metal intake or an aluminum p&p job. I know the LS6 is an option also, but it doesn't seem worth the effort for the numbers I've seen.

 

Why worry about the 250 for fuel at this point , better safe than sorry..
Go for it and kudo's to ya for doing the big job...........

David

 

looks like you need to put a transmission in your budget.

 

See my sig Already there.

 

why not put a real fuel system on it? Better safe than sorry?

 

what would be a 'real' fuel system?

 

Congrats on this set-up! Some awesome times are in store for you my friend! Please provide pics!
Philip S.

 

Erik-Damn man thats gonna be a sick setup you have going there. Ive also kinda been looking into a 408 since they are so popular and then boosting it but i think i'll just go stock 6.0 with boost and all the bolt-ons. I wanna see #'s when this is done thats awesome-congrats bro!!!

 

Thanks guys. It's gonna take about 2 weeks for the mechanicals and then I'm gonna do a rough street tune and try to find a dyno tuner locally who can tune turbos.

Xfactor, you'll love the 6.0 + boost. I never made it to the track with mine (kept braking stuff and self tuned the thing for some damn reason), but I can tell you, I destroyed some street races A few days before I had to start the build up, I was tuning wot... I made a launch at 7psi and I tell you I thought I went blind.

 

like i said you might want o put a tranny in your budget.