Should i change my GM3 turbo to GM4 or GM8?

[Shaun091382]

Hi i am planning on redoing my engine and i think my turbo is in for being redone as well my truck is a 93 so it should have the Gm3 turbo correct? should i stick with another one like that or should i consider a gm4 or a gm8? any opinions?

[patrick m.]

if you want to upgrade, but keep a G.M. turbo, go with the GM8.
keep in mind there are other add ons that should go with a turbo upgrade. If the end result will be added boost, an intercooler should be added, also gauges are a must.
good luck.