LLY: gt4202 twins

02ilduramax

Member
Jun 21, 2011
632
3
18
fulton,illinois
i picked up a gt4202 a while back and am wanting to put it on my lly could i use it along with a stock turbo and where do yall buy oil drain flanges and the oil feed lines?...and for intercooler tubing would 3in 16ga mild steel be ok to use?
 

IOWA LLY

Yes, its really me
Feb 23, 2007
2,275
4
0
That should work fine. You can use pulse width or an external waste gate to regulate drive pressure if need be.
 

02ilduramax

Member
Jun 21, 2011
632
3
18
fulton,illinois
these were the numbers i got from dan@ppe.......The part # is 408752. = 76mm ind and 102 exd on the compressor with a .75 A/R 5" inlet and 3.5" outlet. Don't remember the turbine inducer but the exducer was 87mm I think with a 5" vband downpipe and T6 flange.
 

Burn Down

Hotrodder
Sep 14, 2008
7,092
28
48
Boise Idaho
That will work just fine... That is the turbo MPI used before going to the BW475 on the base kits. MPI just used a tighter housing and gated it. Your 1.23 will work fine I would think, depends on how hard your going to push them. As stated above you may need to gate but I don't think so.

This a GT4202R same turbo just water cooled... Don't ask what happened to the GT4202:eek:
IMG_0235.jpg