stock 6.5L turbo name/number

[bigrusty]

Anyone know what the name/number of the turbo Chevy ran in the 1994 6.5L turbo diesel?

[skylark]

GM-4, it is made by Borg Warner.

[Koots]

If you are gonna replace the turbo, don't bother sticking with OEM.

They made the turbo too small for the engine, which is great for off-the-line TQ, but is terrible past 2100RPM. Plus, the small turbo equals higher, hotter temps and pressure (Drive pressure) which can hurt the engine in most cases.

Throwing on a used HX35, H1C or HX40 from a Cummins diesel and you will see less drive pressure and more air flow. This will certainly add more serious lungs to the choked down 6.5TD.