i ended up with a 4.8 cause it was the cheapest one i found.
for a budget junker, i dont think it matters too much. if i wanted to set the world on fire, i would want more displacement, but nobody here will argue that a 4.8 cant hold its own with a turbo.

 

check out the sloppy mechanics. if you want to play the super cheap game, a good 4.8 with ~120-150k on it (usually this puts the ring gaps in the sweet spot for boost), pac 1218 valve springs, a cam similar to a triple 12, and big injectors and pump will do it. when i did mine i threw a few bucks at rocker trunions, new timing chain, hard pushrods, and dual valve springs just to be safe.

 

I was thinking a KB kit with s475, a TU 1 or similar cam, 80 inj, and a big walbro of course the tranny will be swapped to the 80e

 

Yup that would get it...

 

This is the setup i'm currently putting together to throw around 18-20 psi at my 2004 RCSB 210k mile 4.8. I have everything but gears & gaskets/misc parts.

KB pipes w/ BW s475.
Custom cam. BTR springs & pushrods.
LS7 Lifters.
60 lb injectors. I'm using 93 oct. no E85.
Alky Meth Kit.
Fuel rails and regulator.
Walbro 450.
FTI 3600 stall
Built 4l80e shortened driveshaft.
4.30 gears.
Tru-trac.
Moser diff cover.
2.5 Map sensor.

 

He doesnt have much


My old old 4.8 made 700 rwhp on 16 psi with a cam

 

how long did motor sustain that level George?

 

7000 miles and clutch went....then went twins on ls2