JSM
Active member
I have been talking to Reed at turbo specialists, about options available for 20g. These use the 20g exhaust side, and a garret compressor. I believe Waller had this done, and has pics on his webpage.
1) 16CM Turbine housing, P-Trim turbine wheel, 62-1 compressor wheel, Garrett GT series compressor housing, Internally wastegated. Will support a true 900cfm of bolt on air flow. This is my best street unit, and we have dyno numbers to the low 500 number on the Sy/Ty.
2) 16CM turbine housing, P-trim turbine wheel, 63mm TO4S compressor wheel and GT series compressor housing, internal gate and will support an honest 1000cfm. Dyno'd to 547 Whp. A little lag on the street.
3) 16CM, Q-trim, T-72, TO4S compressor housing, internal gate...will do 1200cfm or 600-625 whp. Works with the Vortec heads, but need a stout bottom end with at least 3400 convertor.
4) 16CM, Q-trim, T-76, TO4S, internally gated...we have several mid to low 9 sec. V-6 guys with this.
Numbers 1 &2 are a direct bolt on with AC, and come complete with everything needed to install, number 3 &4 will go on with AC...just a couple of tricks to get them to work. I run the 1st turbo with great success on my GN...
FYI, for anybody with 20 wanting to upgrade, but not go PTE route. I still think PTE route is best, if you have stock setup though. But this is an option.
1) 16CM Turbine housing, P-Trim turbine wheel, 62-1 compressor wheel, Garrett GT series compressor housing, Internally wastegated. Will support a true 900cfm of bolt on air flow. This is my best street unit, and we have dyno numbers to the low 500 number on the Sy/Ty.
2) 16CM turbine housing, P-trim turbine wheel, 63mm TO4S compressor wheel and GT series compressor housing, internal gate and will support an honest 1000cfm. Dyno'd to 547 Whp. A little lag on the street.
3) 16CM, Q-trim, T-72, TO4S compressor housing, internal gate...will do 1200cfm or 600-625 whp. Works with the Vortec heads, but need a stout bottom end with at least 3400 convertor.
4) 16CM, Q-trim, T-76, TO4S, internally gated...we have several mid to low 9 sec. V-6 guys with this.
Numbers 1 &2 are a direct bolt on with AC, and come complete with everything needed to install, number 3 &4 will go on with AC...just a couple of tricks to get them to work. I run the 1st turbo with great success on my GN...
FYI, for anybody with 20 wanting to upgrade, but not go PTE route. I still think PTE route is best, if you have stock setup though. But this is an option.
