1990 408/4l80e/s480 turbo build
#298
We are doing a compound boost set up. We are using a s480 bw and a 60mm magnum turbo. I ordered a set of FIC 190# injectors and a walbro 450 pump to go along with my aeromotive. Ill be replacing the aero with a secon walbro 450. Not sure what the goal or outcome is gonna be but im expecting to have the best of both worlds. A quick spooling bottom end from the small turbo and good top end from the 80mm T6. All this thru a stock 4.8 bottom end with new rings gapped for a turbo and stock 5.3l heads that have larger intake and exhaust valves. Well see how this goes!!
#300
Joined: Jan 2006
Posts: 16,282
Likes: 438
From: Huntsville, AL
Its a shame the guy that wanted to do the sequential setup wrecked his truck...mainly to prove to himself and everyone on here that gets the idea of a sequential twin setup will not work well on a gas engine. Youll either put the big turbo in surge when trying to run low boost, or will never be able to control the boost and blow up your engine. They work great on diesels that want as much boost as you can through at them, but not on gas engines.



lol




