Forced Induction Superchargers | Turbochargers | Intercoolers

650-700 whp LQ4 what turbo??

Old 03-18-2012, 12:27 AM
  #1  
On The Tree
Thread Starter
 
mechanix565's Avatar
 
Join Date: Jun 2009
Location: Pawtucket, RI
Posts: 195
Likes: 0
Received 0 Likes on 0 Posts
Default 650-700 whp LQ4 what turbo??

sooo which turbo is capable of supporting 650-700 whp through a th400 w/ 3700rpm stall on a stock 05 longblock lq4 all arp hardware w/ comp turbo cam/edelbrock vic jr intake and a 102mm TB
using truck manifolds

S400SX4-75 1.10A/R
Turbo Specs:
Compressor Inlet - 5 Inch
Compressor Wheel Inducer/Exducer - 75 x 100mm with ETT
Turbine Wheel Inducer/Exducer - 83 x 74mm
Turbine Outlet - 5 Inch V-Band
Turbine Inlet - T6 Divided
Turbine A/R - 1.10
Horsepower Rating - 500-1050

Turbonetics TC78
cant find specs list anywhere??

Masterpower t76
T76 Master Power Turbo 600-800hp "Q-Trim"
-Journal Bearing Cartridge
-Oil cooled only
Compressor
-55 Trim Inducer Wheel
.72 A/R w/ 4"(101.7mm) inlet and 2.5"(64mm) outlet
Turbine
-76 Trim Exducer Wheel (Q-Trim)
-1.00 A/R TURBINE HOUSING w/ standard T4 divided Inlet and an 3" v-band outlet


on3 76mm (i know jap made but if the specs will work its only 350 bucks shipped)
Cold Side:
Compressor Wheel 76mm
.80 a/r
4” Inlet and 2.5” Compressor Outlet
Inducer- 76.71mm
Exducer- 102.36mm
Exhaust Side:
Exhaust Housing T-4 Flanged Divided
Available in 2 A/R sizes - .68 or .81
3.0" Vband outlet
Inducer- 74.5mm
Exducer- 60.56mm

they are all t4 flange so they will all work for me just let me know which will work and which wont. this is my first big power (500+) turbo setup soo ya thanks in advance guys.
Old 03-18-2012, 06:43 AM
  #2  
Launching!
iTrader: (19)
 
Brad Campbell's Avatar
 
Join Date: Jul 2010
Location: Groton, CT.
Posts: 250
Likes: 0
Received 0 Likes on 0 Posts
Default

I used a Bullseye Billet CompR375. Very happy with the performance. I think it would be well suited for your power goals.
Old 03-18-2012, 08:35 AM
  #3  
TECH Addict
iTrader: (12)
 
LS1NOVA's Avatar
 
Join Date: Nov 2002
Location: Minneapolis,MN
Posts: 2,269
Likes: 0
Received 12 Likes on 12 Posts

Default

From that list, the first one is the best option.
Old 03-18-2012, 09:47 AM
  #4  
TECH Enthusiast
 
buick_lsx's Avatar
 
Join Date: Feb 2009
Posts: 538
Likes: 0
Received 0 Likes on 0 Posts
Default

^^^ x2
Old 03-18-2012, 10:25 AM
  #5  
TECH Fanatic
iTrader: (2)
 
FAST LS1's Avatar
 
Join Date: Jun 2002
Location: Athens TN
Posts: 1,057
Likes: 0
Received 0 Likes on 0 Posts

Default

Many have used the Precision Turbo 7675 not on your list:
• 76mm inducer compressor wheel
• Compressor cover options:
- “H” compressor cover 4.0” inlet/3” outlet
- “Ported H” compressor cover 4.0” inlet/3” outlet
• 75mm, 84 trim turbine wheel
• Turbine housing options:
- T4 Tangential .81, or .96 A/R with 3 5/8” V-Band discharge

Do a search for username Skinnies for reference, he's over 800rwhp.
This is the turbo I will be using on my 5.3L with the same goals of 650+rwhp.
Old 03-18-2012, 11:55 AM
  #6  
TECH Regular
iTrader: (3)
 
831jd's Avatar
 
Join Date: Sep 2010
Posts: 438
Likes: 0
Received 0 Likes on 0 Posts
Default

Whats better a s475 or a tc76? As power wise
Old 03-18-2012, 11:44 PM
  #7  
10 Second Club
iTrader: (33)
 
skinnies's Avatar
 
Join Date: Jul 2004
Location: KS
Posts: 2,431
Likes: 0
Received 4 Likes on 4 Posts

Default

I love my precision billet 7675, but for 700rwhp just got with a tc76 or tc78.
The following users liked this post:
Homer_Simpson (01-03-2022)
Old 03-19-2012, 12:01 AM
  #8  
On The Tree
Thread Starter
 
mechanix565's Avatar
 
Join Date: Jun 2009
Location: Pawtucket, RI
Posts: 195
Likes: 0
Received 0 Likes on 0 Posts
Default

i may be wrong but from what im reading the on3 unit has near identicle specs to the tc76 so it should have the same power making abilities correct? the 300+ savings would be great even it it only lasts a season or 2
Old 03-19-2012, 01:04 AM
  #9  
TECH Enthusiast
iTrader: (34)
 
headed-ws6's Avatar
 
Join Date: Aug 2006
Location: DFW
Posts: 612
Likes: 0
Received 0 Likes on 0 Posts

Default

The exhaust AR on the on3 turbo's would be way to small for a 6.0 and you would choke it.
Old 03-19-2012, 01:38 AM
  #10  
On The Tree
Thread Starter
 
mechanix565's Avatar
 
Join Date: Jun 2009
Location: Pawtucket, RI
Posts: 195
Likes: 0
Received 0 Likes on 0 Posts
Default

ok soo one more question.. t6 s475 vs t4 s475 they have the same 1.10 or 1.32 ar is there any other difference other than what flange i have to weld onto my merge pipe because its like 200 bucks cheaper for the t6 setup.
Old 03-19-2012, 01:53 AM
  #11  
On The Tree
Thread Starter
 
mechanix565's Avatar
 
Join Date: Jun 2009
Location: Pawtucket, RI
Posts: 195
Likes: 0
Received 0 Likes on 0 Posts
Default

http://turboneticsinc.com/store/inde...&product_id=84

is this the turbo i want?
Old 03-19-2012, 03:22 AM
  #12  
TECH Enthusiast
 
buick_lsx's Avatar
 
Join Date: Feb 2009
Posts: 538
Likes: 0
Received 0 Likes on 0 Posts
Default

I have the t6 s475 1.10
Put down 710rwhp....370, 9.2-1, stock 317's
Old 03-20-2012, 11:59 AM
  #13  
Teching In
iTrader: (2)
 
griffsbombelco's Avatar
 
Join Date: Jan 2011
Posts: 34
Likes: 0
Received 0 Likes on 0 Posts
Default

I also have the t6 s475 1.10 put down 623whp 15lbs stock lq4 ls6 cam
Old 03-20-2012, 01:29 PM
  #14  
TECH Regular
iTrader: (12)
 
TurboS10's Avatar
 
Join Date: May 2010
Location: Waxahachie, Tx
Posts: 445
Likes: 0
Received 0 Likes on 0 Posts
Default

The first one

The 68mm/ Q trim turbines are on the small side for a 364.
They will work and will have instant boost, but they will be max'd at your power goal due to the small turbine.

You want at least a 75mm exducer (outlet) on the turbine.

How you plan to use the car later would help decide if you want to go bigger like an S480. Going with the T6 will make it easy if you do go bigger later.

The GT76 from FI works well also from the results I've seen posted on here.
Old 04-09-2012, 02:06 AM
  #15  
10 Second Club
iTrader: (33)
 
skinnies's Avatar
 
Join Date: Jul 2004
Location: KS
Posts: 2,431
Likes: 0
Received 4 Likes on 4 Posts

Default

tc78 jy 6.0 on a buddies truck made 720rwhp and spools instantly!
Old 04-09-2012, 09:02 AM
  #16  
Teching In
iTrader: (3)
 
milkplus's Avatar
 
Join Date: Jun 2006
Location: Oh
Posts: 46
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by mechanix565
That's the TC78 with the 68mm turbine and .96ar housing. It would fit great but the turbine is small for a 6.0L. The S475 would be great but it's HUGE. (now you know why the PT7675 is the &^%$).

I don't know anything about chinese turbos. I figure after you buy injectors, wastegate, intercooler, BOV, build it, and tune it... $300 is like 10% or less of your entire budget. When you're laying under the car wondering why there's oil leaking out of your tailpipe and you can't make boost, just think of the $300 you saved!
Old 04-09-2012, 10:21 AM
  #17  
Banned
iTrader: (40)
 
westtexasbuff's Avatar
 
Join Date: Dec 2006
Location: Austin, Tx
Posts: 1,012
Likes: 0
Received 3 Likes on 3 Posts
Default

A billet Precision 7665 would work great, and allow you to grow a little bit at a later point if you decide to do something different. Out of the ones you listed though, I'd go with a TC78.
Old 04-09-2012, 09:26 PM
  #18  
On The Tree
 
miatainthe10s's Avatar
 
Join Date: Feb 2012
Location: Dela-Where?
Posts: 102
Likes: 0
Received 0 Likes on 0 Posts
Default

S475 all the way. Easy upgrade to 80 later and very durable. Don't let t4 hold you back. Everyone wants more after they get used to the power. Lol


Thread Tools
Search this Thread
Quick Reply: 650-700 whp LQ4 what turbo??



All times are GMT -5. The time now is 09:44 PM.