I currently have a VS Racing 76/65 on a 4.8 with a Isky triple 12 cam. Truck is a single cab 4x4. Currently on 12lbs. Was curious when I turn it up will I run out of turbo? How would these two turbos compare to my current turbo?

Vs racing billet 78/75
Compresor: 78mm 11 Blade Billet Compressor Wheel extended tip for high flow
Turbine: GT42 75mm Exducer
Turbine Housing : .96ar T4 open

BorgWarner s369
69.00mm / 2.72” Compressor Inducer Dia.
91.44mm / 3.60” Compressor Wheel O.D.
73.37mm / 2.89” Turbine Exducer Dia.
79.75mm / 3.14” Turbine Wheel O.D.
2.5″ Straight Compressor Outlet

Unsure on AR housing

Any help will be appreciated!

 

The 2 are roughly about the same performance wise i feel but light years better than what you have now. The 369 is definitely a stronger turbo longevity wise but also costs more. They are both going to be turbine limited but will definitely make more power than the 76/65. So really its 6 in one half dozen in the other for me. I personally run a borg s475/83 and love it.

 

The s369 is a little beast

 

S369 is a great turbo, I have one right now on my c10. But it won't fit your hot pipes. It's a 1/2" taller on the pedestal and a 3.5" marmon vband outlet. So unless you want to rework them, you'll have to stick with a small frame t4 like the VS 78/75

 

Well damn that's what I was afraid of lol I have found it with a 3 inch v band outlet, but I'm guessing the 1/2" taller on the pedestal will screw things up. Might hit up Trick and see if they can make me a new downpipe to fit it? My main concern was putting the 78/75 on and it not coming on till 4k RPM. Think the 78/75 is too big for a 4.8?

 

Itll make boost before that, just sit on the 2step a while or brake boost. Turbos are not strictly tied to RPM, but time and airflow.

 

Sloppy Mechanics has a vs 78/75 on a 4.8 in a Colorado. Looks to work just fine. Might check out his YouTube channel.

 

I went from a on3 76/65 to a 74/74 s300 with a custom t4 exh housing and it spools better than the china turbo.

 

Running 20lbs on a s369sxe here, stock 03 4.8 with cam similar to triple 12, enough power to go 10.3 at 129 on pump gas and 50/50 meth. Getting ready to push it to 23-24 lbs