Rwood59

I recently got a "fresh" 5.3 for my C5.with BTR springs, ls7 lifters, assuming the heads are stock, also has a "smaller" powell racing cam (don't know the spec).
I also have an FTI streetsweeper cam on the shelf.
I do a lot of street driving with the car and am looking to make 600+ whp, It is a 6 speed.
Would I be able to spool an s475 t6 1.32ar on the 5.3? There is one for sale in my area for a good deal.

slow ride

Is it a 96 turbine wheel? (I assume so). It would be laggy in my opinion, but if you swapped to say a t4 1.10 turbine housing it would be much better. An auto car drag racing would be fine with it, but for driving no thanks.

Esser

Use a 76/75 with T4. T4 is always going to better for a 6speed for spool between gears

junk c5

I’ve got a Billet 80mm T4 turbo with a 1.25 A/R on a 390 cu motor and it’s a hair laggy on the street in an auto. I’d definitely go T4 with a .96 to a 1.10 A/R housing 76mm turbo in a comb like yours.

jayyyw

I run a s476 with a T4 1.10 and 96mm turbine, on a 5.3. It spools okay. Could be a little better. Full boost at ~4800rpm