T4 Time
Tuned
Joined: Nov 2020
Posts: 403
Likes: 171
From: Greenville, SC
I have 205/30 and the boost can easily exceed my 30 psi gauge. Truck feels great towing and boost comes on strong at highway RPMs with my 4.10 rear end. I noticed you said you don’t tow much which is why I suggested researching the 363. I find that driving unloaded around town I rarely hit much boost and think the 363 might be a better fit for that scenario.
Thread Starter
|
Mountain Pass
Joined: Nov 2015
Posts: 151
Likes: 9
I didn’t know you could get 205/30. Injectors come in all shapes and sizes I guess lol. That’s similar to mine. Is your truck a automatic ? I mean I don’t see much boost in the 7.3 ‘s until I put my foot into it ( which I do often ). With the modified stock turbo, I easily hit 20psi without working the truck too hard and I’ve seen 30 psi before. I have already purchased a s364.5. Like I said I’d like to go bigger with the injectors so I wanted some room to grow. I didn’t want to buy the s363 and have it be too small for some 238/100 or something larger not sure yet. But what do I know I haven’t had to experience with a bw turbo yet just my thoughts from gathering info on the forum.
so I got a question for you DMCO when I relieved the s364.5 I unbolted the center section from the compressor housing, I didn’t realized the bolts went all the way through into the housing opening. There was a weird sealant on the thread I assume to prevent a boost leaks. I tried to keep as mush sealant on the threads and reinstalled. Do you know if I’ll have a problem with leaks now that I disturbed those bolts? Do I need to re apply sealant?
so I got a question for you DMCO when I relieved the s364.5 I unbolted the center section from the compressor housing, I didn’t realized the bolts went all the way through into the housing opening. There was a weird sealant on the thread I assume to prevent a boost leaks. I tried to keep as mush sealant on the threads and reinstalled. Do you know if I’ll have a problem with leaks now that I disturbed those bolts? Do I need to re apply sealant?
Hotshot
Joined: Dec 2005
Posts: 14,377
Likes: 609
From: evansville in
A set of 238will be way too big on a364. Heck they are big on a 366. If you are headed towards 238 you will want to look more into a s369 really. Just my .002 worth so take it for what's worth I guess..what do I know. I just tow with an s468 and 250/200s..
That stuff on the threads is thread locker just to retain bolts.
That stuff on the threads is thread locker just to retain bolts.
Hotshot
Joined: Dec 2005
Posts: 14,377
Likes: 609
From: evansville in
Travis has on on his Sd and likes it just fine. I think you will be happy . No way would I go smaller tho.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Laughing Gas
Joined: Apr 2020
Posts: 1,232
Likes: 284
From: NT, See you in the
Tim,
You might want to give the small turbine 364.5 a hard look if you're dead set on that compressor size. Spools a couple hundred RPM sooner. More of the T4 SD guys are selling their 364.5's and moving to the 363/68/.91 set up because it has better spool characteristics for the smaller injectors.
@ESwift had both the large 364.5/74/.83 and now the small 363/68/.91 on his 160/0 truck and can't stop saying good things about it.
You might want to give the small turbine 364.5 a hard look if you're dead set on that compressor size. Spools a couple hundred RPM sooner. More of the T4 SD guys are selling their 364.5's and moving to the 363/68/.91 set up because it has better spool characteristics for the smaller injectors.
@ESwift had both the large 364.5/74/.83 and now the small 363/68/.91 on his 160/0 truck and can't stop saying good things about it.
Thread Starter
|
Mountain Pass
Joined: Nov 2015
Posts: 151
Likes: 9
Tim,
You might want to give the small turbine 364.5 a hard look if you're dead set on that compressor size. Spools a couple hundred RPM sooner. More of the T4 SD guys are selling their 364.5's and moving to the 363/68/.91 set up because it has better spool characteristics for the smaller injectors.
@ESwift had both the large 364.5/74/.83 and now the small 363/68/.91 on his 160/0 truck and can't stop saying good things about it.
You might want to give the small turbine 364.5 a hard look if you're dead set on that compressor size. Spools a couple hundred RPM sooner. More of the T4 SD guys are selling their 364.5's and moving to the 363/68/.91 set up because it has better spool characteristics for the smaller injectors.
@ESwift had both the large 364.5/74/.83 and now the small 363/68/.91 on his 160/0 truck and can't stop saying good things about it.
CNCFAB
Joined: Apr 2020
Posts: 4,874
Likes: 2,006
In reality you shouldnt need springs or studs unless you drive like a wild man, or run over 3,000rpm often. I would also skip the comp 910 and jump up to a better grade spring. Bitterroot diesel rents the best spring compressor tool available.
As said above I have run the 364.5 with both a .91 and a .83 on an auto with 160/0 and have one with a .91 on a zf6 with 180/30.
On the auto I swapped to the small turbine 363 to better work with how I use the truck, and I really love it.
Thread Starter
|
Mountain Pass
Joined: Nov 2015
Posts: 151
Likes: 9
The 364.5 large turbine will be ok. You can adjust your driving habits to keep rpms up just a bit to where it is more in the zone. If anything I would look at dropping the 3.55 gears for 4.10 if you ever plan on towing often.
In reality you shouldnt need springs or studs unless you drive like a wild man, or run over 3,000rpm often. I would also skip the comp 910 and jump up to a better grade spring. Bitterroot diesel rents the best spring compressor tool available.
As said above I have run the 364.5 with both a .91 and a .83 on an auto with 160/0 and have one with a .91 on a zf6 with 180/30.
On the auto I swapped to the small turbine 363 to better work with how I use the truck, and I really love it.
In reality you shouldnt need springs or studs unless you drive like a wild man, or run over 3,000rpm often. I would also skip the comp 910 and jump up to a better grade spring. Bitterroot diesel rents the best spring compressor tool available.
As said above I have run the 364.5 with both a .91 and a .83 on an auto with 160/0 and have one with a .91 on a zf6 with 180/30.
On the auto I swapped to the small turbine 363 to better work with how I use the truck, and I really love it.
CNCFAB
Joined: Apr 2020
Posts: 4,874
Likes: 2,006
i would never change that gear ratio on that truck 4.10 are brutal in a zf5. I don’t tow with this truck I have another 7.3 that is a 5spd with 4.10 gear that is my work truck and I tow with that one. With 4.10 in 5 th gear 80mph is 2900rpm....brutal. So e swift do you like the s364.5 charger? I will definitely be renting from bitterroot, I can’t believe the price of the spring compressor.
The 363 will be in its sweet spot about 200-300 rpm sooner. The 364.5 flows more up top. Figure out what rpms you like to be at the most.
I run 4.10 with a zf6 and 4.30 with 4r100, both stock 32" tires. But I rarely go over 70.
Thread Starter
|
Mountain Pass
Joined: Nov 2015
Posts: 151
Likes: 9
I’m still gathering parts for the t4 conversion. I’m having csd make some custom intercooler pipes for my rxracing intercooler. I have a question on installing SD plenum a on my obs. The super duty plenums where cheap even with riffraff inserts and Ford rtv compared to billet plenums. But I saw somewhere that a couple of mounting holes on the as plenums have to be welded over? Can someone confirm this? Can’t seem to find an answer on the forums
Laughing Gas
Joined: Apr 2020
Posts: 1,232
Likes: 284
From: NT, See you in the
I’m still gathering parts for the t4 conversion. I’m having csd make some custom intercooler pipes for my rxracing intercooler. I have a question on installing SD plenum a on my obs. The super duty plenums where cheap even with riffraff inserts and Ford rtv compared to billet plenums. But I saw somewhere that a couple of mounting holes on the as plenums have to be welded over? Can someone confirm this? Can’t seem to find an answer on the forums