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Old 05-08-2018, 04:35 PM   #1
Oliver77

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Compound turbo sizing

Me and a buddy have been trying to figure out what would be the best setup for him to run on his 07 5.9 truck to pick up some more power. Right now the truck has 63/68/14 over 89/96/1.32 with 85% over injectors and dual pumps. My question is what would be his best bet to change to pick up a noticeable amount of power while keeping a nice spool up. The 63 is an older cast wheel turbo not a sxe. Would it be as simple as throwing a t4 housing on the 63 or would you all suggest swapping the whole setup. We are planning on stepping fuel up to at least 150%. We would just like some suggestions on what setup people have ran that made good power (11-1200) and maintained spool up. Truck has all supporting mods (billet rods, 188/220 cam, valve train, etc).
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Old 05-08-2018, 05:57 PM   #2
jasonc

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I'm running a t4 s467.7/83/1.10 over a 485/96/1.32. It makes good power and spools very quick.
 
Old 05-08-2018, 06:11 PM   #3
Oliver77

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I guess I should have mentioned he tows on a regular basis around 20k lbs. Would a s400 secondary be able to do that with a manual trans.
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98 ECLB 12v 5sp, 712/1358- Sold
2010 dodge G56- S&S 10mm, Exergy 100% overs,
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Old 05-08-2018, 08:16 PM   #4
Oliver77

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Your setup is what I suggested for him except with around a 200% over I think it should cool good while towing and make good power.
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98 ECLB 12v 5sp, 712/1358- Sold
2010 dodge G56- S&S 10mm, Exergy 100% overs,
2nd gen swap, 472 numbers coming
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Old 05-08-2018, 11:09 PM   #5
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I think you answered your own question op, t4 s300 sxe is hard to beat underneath another charger
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Old 05-09-2018, 07:56 AM   #6
Oliver77

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That’s what I was thinking I just have no experience with s300’s or compounds really. I been running single s400s for so long.
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98 ECLB 12v 5sp, 712/1358- Sold
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2nd gen swap, 472 numbers coming
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Old 05-09-2018, 10:00 AM   #7
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The setup is my sig is exactly what you are describing. Safe at 1100hp. Go with the .91 housing on a 5.9 though. Could probably make 1400 but not as safe for everything.
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Street Triple, 35's, Trutrac, Carli, MM3 from Gordon, 1100hp

Last edited by Broaner; 05-09-2018 at 10:02 AM.
 
Old 05-09-2018, 06:43 PM   #8
Oliver77

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Quote:
Originally Posted by Broaner View Post
The setup is my sig is exactly what you are describing. Safe at 1100hp. Go with the .91 housing on a 5.9 though. Could probably make 1400 but not as safe for everything.
Do you think your setup would tow pretty good on a 5.9. His main concern is making sure it tows well turned down, but have the ability to make around 1200 turned up. The truck tows a 32ft gooseneck with 20-22 round bales all hay season.
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Old 05-09-2018, 11:18 PM   #9
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Definitely do the .91 for towing and yes it would do fine. Id guess OD off would make that more manageable?

It could do 1200 with no gate and .91 but better get it done at low RPM. With a gate would be no problem.
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Old 05-09-2018, 11:21 PM   #10
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Quote:
Originally Posted by Oliver77 View Post
Do you think your setup would tow pretty good on a 5.9. His main concern is making sure it tows well turned down, but have the ability to make around 1200 turned up. The truck tows a 32ft gooseneck with 20-22 round bales all hay season.
I’ll be honest a 369sxe secondary on a 5.9 is not a solid towing setup. If you tow 10% of the time sure, but it gets hot. I’d rather see a 64.5.
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Old 05-10-2018, 06:11 AM   #11
Oliver77

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Ok thanks guys, and overdrive off isn’t a problem since it’s a manual truck. Clutches seem to be the major problem we are running into right now. He has had 4 triple disc now and needs another. 2 Valair and 2 southbend sintered iron lol. Valair told him they couldn’t build him a clutch to hold since he sled pulls about 6 times a year and tows and southbend says theirs will hold 1500 but he has been through 2 in 12000 miles.
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Old 05-10-2018, 07:50 AM   #12
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Poor transmission
 
Old 05-10-2018, 10:42 AM   #13
Oliver77

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It’s the original g56 surprisingly lol. It’s been at 1000hp for around 30k miles with around 50 hooks on it. He pulls in 5th low and it’s 4.10 geared, but it’s a ticking timebomb for sure.
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Old 05-10-2018, 11:23 PM   #14
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Suggest 69 instead of 64.5 in regards to keeping the trans happy.


The clutch situation is tricky. My first ceramic triple lasted 3 years, 15k roughly with about 100 4wd launches on the strip and dirt drag. I'm being nicer too it now. I don't tow really and I still don't wanna try a sintered.

Valair also added some vanes to the flywheel to help bring cool air into the clutch. Looked like a nice improvement when I got the rebuild back. Did the valair he had have that yet? Thats in the last 2 years they added that. I haven't beat on the new one real bad yet but I definitely haven't had it lock up from heat like old one did.
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Street Triple, 35's, Trutrac, Carli, MM3 from Gordon, 1100hp

Last edited by Broaner; 05-10-2018 at 11:31 PM.
 
Old 05-11-2018, 08:03 AM   #15
Oliver77

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It’s been a couple years since he had a valair and he emailed them and told him his power goals and what he does with the truck and they emailed him back that they don’t offer a clutch for his needs. I run a Kenny’s street puller triple and really like it but they put a power rating of 900 on it so I don’t feel comfortable telling him to try it.
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Old 05-11-2018, 04:36 PM   #16
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I ran a s369sxe/s488. On a 180hp injector which is about 88%. Was not a fan of towing heavy with it at all got hot unless I towed turned all the way up. Dynoed 1013/1858.
 
Old 05-11-2018, 08:58 PM   #17
Oliver77

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Quote:
Originally Posted by SlushBox View Post
I ran a s369sxe/s488. On a 180hp injector which is about 88%. Was not a fan of towing heavy with it at all got hot unless I towed turned all the way up. Dynoed 1013/1858.
Thanks for letting me know I think he is gonna try a s364.5 with .91 housing and see how it does.
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98 ECLB 12v 5sp, 712/1358- Sold
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2nd gen swap, 472 numbers coming
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Old 05-15-2018, 02:18 PM   #18
94 12valve
 
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Quote:
Originally Posted by Oliver77 View Post
Thanks for letting me know I think he is gonna try a s364.5 with .91 housing and see how it does.
For the new 364 SXE will he be keeping the 68 turbine or going to the 73? For towing keeping the 68 turbine would be the best bet IMO.
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