Finally retiring the NextGen 78/75
Haven't really been "into it" since, to be quite honest, and have only been to 2 bracket races, with power turned down, so as not to break something I don't want to fix...lol.
My son just swapped on a billet 80 onto the LS Mustang we built, and he's quite happy with it...and following his lead, I ordered one for myself. My hope is it makes more power with less boost/backpressure, which I believe it "should"...
Best ET was 9.32 and best MPH was 148...and it seemed like the 78/75 was simply done at that point, on my 6.0. I'm still plenty happy with how it ran, in a 4120# car, running through a 4 foot long, 3" downpipe. New turbo will initially be ran with my short 4" downpipe, then a fender exit...
Currently have/had this one:
https://turbo4less.com/product/vsr-n...n-7875-billet/
being replaced by this one:
https://turbo4less.com/product/vsr-8...87x82-turbine/
What do you all think of my choice?
Think it'll squeak an 8.9999999 ??
Specs on new turbo:
This is our new release Billet 80mm mated to our 87×82 Turbine in 1.10 t4 Divided housing
Compressor: 80/117
Turbine: 87×82
Turbine Options: 1.10 divided T4
Compressor Outlet : S400 slip fit 3" Race Cover
Turbine Outlet: 4″ Flat S400 Discharge
Inlet Flange: T4 Divided
Specs on "old" turbo:
Compressor: 78/102
Turbine: 83/75
Turbine Options: .96 open T4
Compressor Outlet : 3″ slip fit
Turbine Outlet: 3″ V-band
Inlet Flange: T4 open
.

I would have caved a while ago so no judgement here.
That new turbo can only make you go faster, 8.99 is definitely a real possibility and a good call for not wanting to redo the whole hotside.
What do you wanna bet you'll have to throw significantly more fuel at it?

I would have caved a while ago so no judgement here.
That new turbo can only make you go faster, 8.99 is definitely a real possibility and a good call for not wanting to redo the whole hotside.
What do you wanna bet you'll have to throw significantly more fuel at it?
I agree, it'll be interesting to see how fueling demand changes. I've never seen higher than 55% IDC, so I should have plenty of reserve.

Dual 450's
210#ers
E-85
I plan to add maybe 5-7% fuel on anything above 100kpa for my baseline.
Kinda surprised no one has any opinions (good or bad) on the new turbo choice...
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But since you already have that one, send it and see what happens. It should pickup, maybe you can grab that 8!
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Not sure if they have changed the wheel since then but these were the specs on mine which look similar to what rel3rd posted:
This is our new release Billet 80mm mated to our 87×82 Turbine in 1.10 t4 Divided housing
Rated at 1150 Flywheel
Compressor: 80/117
Turbine: 87×82
Turbine Options: 1.10 divided T4
Compressor Inlet 5.5"
Compressor Outlet : 3´´
Turbine Outlet: 4´´ vband
Inlet Flange: T4 divided
If I was looking to upgrade with a 6.0L but still stay T4, I would go with the 80mm with the 96mm wheel. However, I have to say Rel3rd has gotten way more out of his small 7875 than I could have imagined.
My car also has a 6.0 liter, just to clarify.
There are a ridiculous amount of choices in turbos, just from that 1 vendor, but I "think" the one I bought is the biggest that still uses slip fit for the compressor to intercooler piping connection?
It's supposed to be here tomorrow, so I hope to have it on by the weekend.
My only possible, (that I foresee), setback, is if it doesn't clear my radiator. I can stand mine up a tad more, but it's about as stood up as a stocker can be.
My car also has a 6.0 liter, just to clarify.
There are a ridiculous amount of choices in turbos, just from that 1 vendor, but I "think" the one I bought is the biggest that still uses slip fit for the compressor to intercooler piping connection?
It's supposed to be here tomorrow, so I hope to have it on by the weekend.
My only possible, (that I foresee), setback, is if it doesn't clear my radiator. I can stand mine up a tad more, but it's about as stood up as a stocker can be.

It arrived today, and plan was to put the car on ramps, yank the radiator, and figure out if I'd have to do a stand up radiator or not...one thing led to another and, new turbo is on, clears stock radiator fine, and needed very little "adjustments" to bolt on. In fact, only one tweak, which was loosen some intercooler connections...
I can say this, with 100% sincerity...I'll never again own a turbo that isn't v banded together like this new one is. Soooooo, much easier, to bolt turbine housing on by itself, then center section, then compressor housing section. Did 95% of the swap from under the hood.
I get up at 2:15am for work, so decided to quit at 8:30pm, but did fire it up, for no reason whatsoever, lol.
All that is left is downpipe and refilling radiator and checking for leaks and whatnot.
With the On3 hotside, I have roughly 3/4" clearance between rad and turbine housing, and 1"+ between compressor housing and rad.
Was sweating my a$$ off, so pics will be taken another day, before completion.












