Go Back   LS1TECH > LS1-LS2-LS3-LS6-LS7 PERFORMANCE > Forced Induction
Sign in using an external account
Register Forgot Password?
Search

Forced Induction
Superchargers | Turbochargers | Intercoolers
Sponsored by
RPM Motorsports

Welcome to LS1Tech.com!
Welcome to LS1Tech.com.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join LS1Tech.com today!


Reply
 
Thread Tools Search this Thread
Old 02-11-2012, 01:17 AM   #1
Banned
2004 Infiniti G35x
 
Trader Rating: 1
Join Date: Mar 2011
Location: Louisiana
Posts: 128
Default 408 Single turbo build. Need Input

LS2 408 Forged. Wanting to run single turbo ( Turbonetics 76mm ) T4. Looking to get about 700RWHP with this set up. Is this enough turbo? also what size BOV and piping would be best. There is no kit to buy since this is going into my infiniti G35. All custom fab. About to order parts and want to make sure they are correct. One more thing what is a good boost controller. Thanks
Fafonfoe is offline   Reply With Quote
Old 02-11-2012, 01:35 AM   #2
On The Tree
Garage is empty, add now
 
Trader Rating: 0
Join Date: Aug 2007
Location: Finland
Posts: 111
Default

Depends a little if your doing front- or rearmount? If frontmount, I think you will be choking it with T4 hotside. 408 is quite big anyway and as couple of engine builders has said many times that with too small hotside you will get too much torq with too small rpms and it will eventually shorten engine life.
__________________
Project: 1978 Ford Fairmont STW / 408 LQ4 / S480 / TH400 transbrake / 9" moser
valiant65 is offline   Reply With Quote
Old 02-11-2012, 01:58 AM   #3
TECH Fanatic
Garage is empty, add now
 
BlackWS666's Avatar
 
Trader Rating: 30
Join Date: Mar 2008
Location: Thomasboro, ILL
Posts: 1,142
Default

That will get you to the goal want. If this is going to be a street car then T4 will be fine. As far as a boost controller i would recommend the Eboost2. Best controller for the street IMO. JGS is my preference on BOV. There 60mm is an awesome piece. 2.5" hotside will get you by. Good luck man. Will be super fun!!!
__________________

Suspension and Chassis by Burkhart Chassis
Motor built by G&G Machine Shop
Paint, Fabrication, and Tuning by OWNER
BlackWS666 is offline   Reply With Quote
Old 02-11-2012, 02:10 AM   #4
Banned
2004 Infiniti G35x
 
Trader Rating: 1
Join Date: Mar 2011
Location: Louisiana
Posts: 128
Default

Yes front mount turbo. It's gonna be a street car some track use. I'll be happy with 700-800 rwhp. I have a import it can't handle to much more than that. Car makes right at 500 rwhp if I changed the cam a lot of cylinder pressure. Cam will be changed for turbo. Also comp is 10.5. I haven't seen to many single turbo builds with 404/406/408 engines. Does this setup sound like I will still need a t5? Thanks
Fafonfoe is offline   Reply With Quote
Old 02-11-2012, 06:19 PM   #5
12 Second Club
2001 Chevrolet Camaro
 
gsxr1k2's Avatar
 
Trader Rating: 6
Join Date: Jul 2007
Location: A Mile High
Posts: 399
Default

Do ALOT more reading in this section. Your asking really basic questions that you can find all over this forum. Good luck with your build!
__________________
Colorado Performance Unlimited 404 on E85
GT-91~TH400~Fab 9
17 PSI 9.87@143 8500DA
gsxr1k2 is offline   Reply With Quote
Old 02-12-2012, 09:45 AM   #6
TECH Regular
Garage is empty, add now
 
Trader Rating: 0
Join Date: Jun 2010
Posts: 435
Default

I have a 402 i had built and i was going to run a t76. After talking with the tuner he said it was to small. He told me to call forced inductions. After talking to them they agreed and i went with a s400-78 t6 housing. I dont think a there is such thing as a t5 at least ive never seen one or heard of anyone owning one. My s400 cost the same as my t76 so it comes down to can you fit it. Dont know what car your running it in but ive seen 4th gen guys put it in the air box location. Hope this helps.

BTW the tuner and forced inductions said the engine would run the turbo out of air on the top end.

Good luck
nodrok is offline   Reply With Quote
Old 02-12-2012, 10:30 PM   #7
Banned
2004 Infiniti G35x
 
Trader Rating: 1
Join Date: Mar 2011
Location: Louisiana
Posts: 128
Default

That sounds great. I had a little bit od downfall today. I snapped btoh rear cv alxes at the track. Launched at 2500 with street tires and it hooked pretty good and they left me hanging. Def will look into that turbo. What numbers were you putting down at what boost?
Fafonfoe is offline   Reply With Quote
Old 02-13-2012, 12:50 PM   #8
10 Second Club
Garage is empty, add now
 
Fbodyjunkie06's Avatar
 
Trader Rating: 10
Join Date: Mar 2009
Location: Greensboro, NC
Posts: 4,665
Default

T76 is too small.

Is keeping a/c absolutely a must?

Do you mind standing the radiator up?

If you don't mind doing those two things, you can get more creative with the size turbo you can run.
__________________
Tick Peformance, Nitrous Express, Menscer Motorsports, FTI, Madman Suspension, Holeshot Wheels

6.10@113 1.29 60' Video:http://s1105.photobucket.com/albums/...t=IMG_0411.mp4
Martin Smallwood-Tech/Customer Service/Sales
Tick Performance of Mount Airy, NC - Specializing in GM LSx Performance
336.719.0599
Fbodyjunkie06 is offline   Reply With Quote
Old 02-13-2012, 01:26 PM   #9
10 Second Club
Garage is empty, add now
 
Trader Rating: 22
Join Date: Mar 2006
Location: Down Town Chicago
Posts: 3,249
Default

That will get you 700whp but with alot of back pressure. I would def go alot bigger.
__________________
01 White WS6 M6-A4 Conversion Forged 370 9.5:1,c6/6.0 kit from KYTP,Comp 88/94, FMIC,FLT 4L65E Level 7 W/ Vig 3disc 3600,9inch w/325 gears 867WHP,875FTLBS.9.83@138 1.45 60ft.3820lb race weight,.Speed inc burnout. http://s297.photobucket.com/albums/m...t=MVI_1811.flv
DD-2013 Chevy Volt- 200mpg
SPRAYED 01 is offline   Reply With Quote
Old 02-13-2012, 02:46 PM   #10
Teching In
Garage is empty, add now
 
Trader Rating: 0
Join Date: Feb 2012
Location: Tampa Florida
Posts: 13
Default

Quote:
Originally Posted by Fafonfoe View Post
LS2 408 Forged. Wanting to run single turbo ( Turbonetics 76mm ) T4. Looking to get about 700RWHP with this set up. Is this enough turbo? also what size BOV and piping would be best. There is no kit to buy since this is going into my infiniti G35. All custom fab. About to order parts and want to make sure they are correct. One more thing what is a good boost controller. Thanks
A 76mm should be fine with the proper turbine wheel. PTE offers a 7685. This is the smallest single 76mm turbo I would go with for a 408.
Alpha is offline   Reply With Quote
Old 02-13-2012, 04:06 PM   #11
Banned
2004 Infiniti G35x
 
Trader Rating: 1
Join Date: Mar 2011
Location: Louisiana
Posts: 128
Default

I am limited to room due to the engine being in my G35 Coupe. I just order a smaller radiator so maybe I can have more room on one side, if not I am fine with cutting a hole in the hood. I'm not looking to going crazy on the number, 700 will be just right. Car will have AC put back in it. way to hot in LA. Prob going with a S400 T6 80mm Turbo. Should do what I want to do. I've read good things about this turbo with guys with the same setup.
Fafonfoe is offline   Reply With Quote
Old 02-14-2012, 10:08 AM   #12
LS1TECH Sponsor
Garage is empty, add now
 
DrTurbo's Avatar
 
Trader Rating: 3
Join Date: Mar 2006
Posts: 3,968
Default

Quote:
Originally Posted by Fafonfoe View Post
I am limited to room due to the engine being in my G35 Coupe. I just order a smaller radiator so maybe I can have more room on one side, if not I am fine with cutting a hole in the hood. I'm not looking to going crazy on the number, 700 will be just right. Car will have AC put back in it. way to hot in LA. Prob going with a S400 T6 80mm Turbo. Should do what I want to do. I've read good things about this turbo with guys with the same setup.
We build many S400's for alot of companies. The 80mm unit is a great unit, spools well and will make the power you are looking for.
DrTurbo is offline   Reply With Quote
Old 02-14-2012, 11:13 AM   #13
TECH Addict
Garage is empty, add now
 
Trader Rating: 12
Join Date: Nov 2002
Location: Minneapolis,MN
Posts: 2,048
Default

Quote:
Originally Posted by Alpha View Post
A 76mm should be fine with the proper turbine wheel. PTE offers a 7685. This is the smallest single 76mm turbo I would go with for a 408.
Have you seen the price on that thing though? Ouch.

We need to know how much room you have.
__________________
71 Nova- 950whp 5.3
One-guys-garage
LS1NOVA is offline   Reply With Quote
Old 02-14-2012, 11:21 AM   #14
10 Second Club
Garage is empty, add now
 
Fbodyjunkie06's Avatar
 
Trader Rating: 10
Join Date: Mar 2009
Location: Greensboro, NC
Posts: 4,665
Default

Quote:
Originally Posted by Alpha View Post
A 76mm should be fine with the proper turbine wheel. PTE offers a 7685. This is the smallest single 76mm turbo I would go with for a 408.
As someone else said have you seen the price on that turbo? Almost 4k, there are so many better turbo's out there, price wise, and that would better match what he wants than that one. I also don't think I have seen anyone run that turbo in real life, aside from Jessica Barton. Now that I say that there might be a guy I know at the local track that uses one, but still much better options.

I would look into a S400 line as Jose(Dr. Turbo) suggested. The S480 and S482 even the S488 are perfect for what you want.

I'd think that the T4 versions of the S480 and S482 could maybe be used to keep a/c. Might need to get creative, but doing a turbo set-up requires lot's of that.
__________________
Tick Peformance, Nitrous Express, Menscer Motorsports, FTI, Madman Suspension, Holeshot Wheels

6.10@113 1.29 60' Video:http://s1105.photobucket.com/albums/...t=IMG_0411.mp4
Martin Smallwood-Tech/Customer Service/Sales
Tick Performance of Mount Airy, NC - Specializing in GM LSx Performance
336.719.0599
Fbodyjunkie06 is offline   Reply With Quote
Old 09-11-2014, 03:17 PM   #15
Teching In
Garage is empty, add now
 
Trader Rating: 0
Join Date: Nov 2011
Posts: 15
Default

How did this build go? I have a Comp Ct5x 80/87 with a 1.25 A/R t4 flange going into my GTO front mount with an iron 408, 9.5:1, LSA heads. I believe I have the largest turbine housing available with a t4 flange. Ill run it, and if the backpressure is too much, I can always swap the turbine housing for t6 and keep my same compressor.
Faststudy101 is offline   Reply With Quote
Old 09-11-2014, 04:49 PM   #16
9 Second Club
Garage is empty, add now
 
Trader Rating: 0
Join Date: Jan 2013
Location: New Orleans, Booziana
Posts: 307
Default

S480 on a 408 will work quite well and it will spool nicely as well. Personally, I wold not put a 76mm turbo on that and I would run a T6 hot side, the 96mm/1.32 if you can fit it.
__________________
'82 Fairmont Futura Sedan, "Leroy Brown." http://www.youtube.com/playlist?list...0MAYeh5oFZEwjy

Proud supporter of Lil' John's Motorsport Solutions.

Member of the Sloppy Mechanics School of Automotive Engineering.

Leroy on Facebook: https://www.facebook.com/pages/Leroy...61794284006267
OldGold is offline   Reply With Quote
Old 09-11-2014, 05:06 PM   #17
On The Tree
Garage is empty, add now
 
Trader Rating: 0
Join Date: Aug 2010
Location: wilson,nc
Posts: 144
Default

Two and half years later......
__________________

69 chevelle SS build.............. in progress
toytech93 is offline   Reply With Quote
Old 09-11-2014, 07:41 PM   #18
TECH Apprentice
Garage is empty, add now
 
Heavy H.P.'s Avatar
 
Trader Rating: 0
Join Date: Aug 2006
Location: Land Of Enchantment
Posts: 393
Default

If a 76 is too small why couldn't he go to a mid frame turbo. I my self have been thinking about a 408 with a Pt88 in the future. That should be able to push a fbody into single digits easy correct?
__________________
99 CAMARO SS

2014 IS THE YEAR OF THE HS HERO
Heavy H.P. is offline   Reply With Quote
Old 09-11-2014, 08:05 PM   #19
On The Tree
Garage is empty, add now
 
Trader Rating: 4
Join Date: Apr 2010
Location: ft rucker
Posts: 127
Default

Quote:
Originally Posted by Heavy H.P. View Post
If a 76 is too small why couldn't he go to a mid frame turbo. I my self have been thinking about a 408 with a Pt88 in the future. That should be able to push a fbody into single digits easy correct?
I have a 47-88 t-4 on my 402 and I made 1143 through a 6 speed. Power band never fell off .
ghost-1 is offline   Reply With Quote
Old 09-11-2014, 08:07 PM   #20
TECH Apprentice
Garage is empty, add now
 
Heavy H.P.'s Avatar
 
Trader Rating: 0
Join Date: Aug 2006
Location: Land Of Enchantment
Posts: 393
Default

Quote:
Originally Posted by ghost-1 View Post
I have a 47-88 t-4 on my 402 and I made 1143 through a 6 speed. Power band never fell off .
So the setup does work and you can get away with the T4 then.
How much boost are you running, would you say the setup is maxed out?
__________________
99 CAMARO SS

2014 IS THE YEAR OF THE HS HERO
Heavy H.P. is offline   Reply With Quote
Old 09-11-2014, 08:07 PM
LS1Tech
Pontiac Firebird




Paid Advertisement
Reply

Tags
12, 408, average, build, coast, cost, engine, g35, infiniti, ls1, ls2, single, size, tech, turbo, turbonetics


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
is machining needed when changing pistons Jc803 Generation III Internal Engine 4 02-09-2014 06:18 PM
Whats a good inexpensive twin turbo kit? PhoenixDirtyBird Forced Induction 18 02-01-2014 04:35 PM
Best lq9 cylinder head Daniel Nicastri Forced Induction 6 01-27-2014 05:04 PM
Build pics and advice for 408 boosted CamarosForever Generation III External Engine 0 08-19-2013 10:51 AM
408 CID what turbo Ls sn95 Forced Induction 15 06-01-2012 01:37 PM



All times are GMT -5. The time now is 10:54 AM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Service - Privacy Statement - JOBS
Emails & Contact Details