03regcab sierra

iTrader: (7)

Want some opinions from the experts about doing a s480 w/ small exhaust wheel on a 4.8l
Lil run down of my setup to help out
Stock bottom end 4.8
Vinci turbo cam 216/216
Stock 799 heads milled .010"
Head studs
Ls9 gaskets
All supporting valve train.

Jakes level 2 built 4l80e manual valve body with trans brake 3600 P.I. triple disk converter
Ford 8.8 rear 3.73 gears full spool

Let's here your thoughts!

nonnieselman

iTrader: (10)

with that transbrake and stall, with a 2 step.. that thing should be nasty!!!

Might take a second to build boost, or put nitrous on it to help it off the two step..

Prolly wanna talk to Foose on that one tho i cant rem what size turbo he has on the 4.8.

smokeshow

iTrader: (16)

I ran the big turbine s480 on my 4.8 with a similar cam. Had a circle d converter, 2400 stall that acted more like a 3400. I ran the quick spool on it but it still took a while to spool. Was a riot when the turbo got moving though, lot of fun at 20psi.

lglowe

iTrader: (3)

I think Foose is running the 11 blade billet 75 mm with small turbine and its stupid fast at 15 psi the last I seem him talk about it. I think your headed in the right direction though!

Jake99

iTrader: (5)

call forced inductions, hes done 4 turbo 4.8 builds all in the 750-850rwhp range. You pretty need the 75 ex wheel with a 1.10ar if u wana make over 750rw. 75 compressor should let u hit 1000hp.

03regcab sierra

iTrader: (7)

Forgot to add that I have nitrous and a 2 step as well. I wanna go nasty on this 4.8 already have a backup motor to go back in so let it eat! Lol

Jake99

iTrader: (5)

Well then get a 80/87 bw and spray a 100 shot on 25psi, I'll make the trip down to watch lol.

smokeshow

iTrader: (16)

Yeah let me know how it runs. I was thinking 18psi and a 75 shot for my new project.....you can be the guinea pig though

lglowe

iTrader: (3)

I have a 76-87 1.25ar on my 5.3 and it doesn't have good street manners as far as stop light to stop light kinda driving but it's nasty for drag racing. About to try a 1.10 housing and see if that helps a little on the street since this a dd

turbo-ls7

iTrader: (1)

Pretty bad *** set up if you ask me I have a s480 and I'm working on a 427 whith it as those is some bad azz turbos