Any improvement of S366/468 over 38r

lariat 7.3 · Jul 23, 2015

Would there be any improvement over the 38r with 238/80's with either turbo as far as spool ability and towing? Thinking about switching over to a T4 setup

PABowhunter · Jul 23, 2015

If you don't go over 80% nozzles you probably won't notice much, if any improvement. With matts tuning, he should have your setup pretty much dialed in as it's pretty popular.

If you want to go t4, you have a lot more options. A lot of guys say the basb does everything the 38r does, just better. I don't have any personal experience with the basb tho.

If you want more power and bigger nozzles I would skip the 366 and go with the 468. I like mine. Borg Warner did just come out with an upgraded 366 and a 369 that I'm kind of curious to see how they work with the ol 7.3.

lariat 7.3 · Jul 23, 2015

yeah been thinking about bumping my 238/80 to 250/200s . Just seems like i fall under the turbo when towing but that can be the 35's i think. I have a guaranteed buyer if i were to sell the setup im running now to my dad with his excursion

lariat 7.3 · Jul 23, 2015

talked with barder and he said the 366 would be a pretty big improvement over the 38r

PABowhunter · Jul 23, 2015

James definitely knows his stuff. I'd go with his advice. He went from a 366 to a 468 on his personal truck...

emev0l · Jul 23, 2015

lariat 7.3 said:
yeah been thinking about bumping my 238/80 to 250/200s . Just seems like i fall under the turbo when towing but that can be the 35's i think. I have a guaranteed buyer if i were to sell the setup im running now to my dad with his excursion

You will be better off just having 200% nozzles put on your 238/80's, the 12cc of difference between a 238's and 250's wont be any different.

The s468 is a great turbo, spool great, tows great, that's the turbo to have for hybrids up to 350/200's.

Carolina444 · Jul 23, 2015

emev0l said:
You will be better off just having 200% nozzles put on your 238/80's, the 12cc of difference between a 238's and 250's wont be any different.

The s468 is a great turbo, spool great, tows great, that's the turbo to have for hybrids up to 350/200's.

Are 230/100 enough for the s468? Or 200% nozzles required to get fast spool for a daily driver?

Cloverleaffarm · Jul 23, 2015

238/100 is fine with a s468

I ran mine on stock injectors for a month waiting for my 250s to get back

emev0l · Jul 23, 2015

Yup like he said, and if you planned on running smaller injectors with an s468 you could run it with a .90 housing for a while then if you put something big in you can swap just the housing out for a 1.10.

Carolina444 · Jul 23, 2015

Thanks for the info guys.. im having a hard time making my mind up on a basb or s468

lariat 7.3 · Jul 23, 2015

im just curious if i should keep an eye out for a t4 turbo for sale. How would a 200% effect egts, mileage, and overall driveability

Magnum PD · Jul 23, 2015

It'll be smokey if you get in the throttle without boost.

lariat 7.3 · Jul 23, 2015

smoke is fun lol. but how are egts etc

PABowhunter · Jul 23, 2015

Check out this old thread about 200% nozzles.

http://powerstrokearmy.com/forums/showthread.php?t=3506

Most those guys did a lot of their own tuning. Keep in mind this was 4 years ago and tuning has made even more progress since then. It may take a few shots, but any of the reputable tuners on this site should be able to get 200% dialed in. Of course live tuning is the best.

lariat 7.3 · Jul 23, 2015

ever since i've had these 238/80's ive had a hazing at idle. I think one is taking a dump cuz i have an intermittent faint miss that comes and goes. Did a compression test and everything was 400-450 psi. So i figure if i'm gonna send them out might as well up them a bit

PABowhunter · Jul 23, 2015

You talk to Gearhead about that?

Magnum PD · Jul 23, 2015

Egt's will a problem when your under a load.

lariat 7.3 · Jul 23, 2015

Magnum PD said:
Egt's will a problem when your under a load.

Crap, they're already a problem lol. I'll stay with the 80% then.

Sent from my SM-G900V using Tapatalk

lariat 7.3 · Jul 23, 2015

PABowhunter said:
You talk to Gearhead about that?

Yep pretty in depth with Matt about that and high egts and he tried tweaking it a bit and didn't help. If I let it idle ten min then get rolling it'll leave a blueish gray haze

Sent from my SM-G900V using Tapatalk