Some basic questions for my up coming first time lsx turbo build

Car
1990 Rx7 FC T2
6.0L / T56 4.10 gear LSD 24in tire
FA500 coil overs
Poly bushings in front
Spherical in rear
Tehls suspension angle kit (70° of steering lock it's nuts)


Completely stock bottom end on the 6.0 I just found out it is a gen 3 motor with gen 4 internals so ..... it sounds like I should EASILY hit my goal of 600whp with everyday reliability and decant longevity I know nothing lasts for ever but if I can get 2 years out of it I'll be happy

So here's my parts list

Engine

2007 Lq4 with gen 4 internals 90k miles
Dual 0.650 BTR spring kit on 317 heads
Street friendly turbo cam maybe 04 ls6 cam
Ls9 gaskets
Stock heads
Stock rod bolts
Stock head bolts
Stock long block pretty much minus springs
Mellings high vol. Oil pump
ATI super damper

Trans
Stage 1 tick perf. 02 Camaro ss t56
Aluminum flywheel
Centerforce DF clutch with arp hardware

Exhaust

AEM wideband
truck manifolds flipped
2.5 in cross over
3.5 in exhaust out of the hood
2 38mm percision wastegates vented to atmosphere

Intake

Truck 88mm maf or what ever mm they are I prefer to use a maf just to create a rock solid tune
Cx racing 31×12×4 intercooler
3in IC piping
50mm tial bov
Snow performance meth inj.
Professional products 96mm intake ported to 102mm and port matched to heads with rails that came with kit
Nick Willias 102mm tb

Turbo

TC76 0.96 AR journal bearing (I have a question at end of post about this)
8an oil feed liNE
10an return

Fuel system

Deka 80lb inj
2 aeromotive fuel pumps 340lph
10 an fuel feed line
C5 Fpr
91 pump gas

Stock Pcm 04 express van on hp tuners it will be getting dyno tuned by a local shop who has done turbo lsx builds before.

My questions are, with this setup can I make 600whp on 12-15psi (on kill mode)? I plan to run as low as 8psi when the Gf Drives it maybe lower depending on how it hook's. How strong are these gen 3 motors with gen 4 internals ? I know what the gen 3 5.3s can do
Will 550-600whp be reliable and bring years of enjoyment to come ? I want to keep the Rpm's 6,000 or under
Do i have to get the piston rings gapped for my goal ?
Please dont reccomend e85 I know.it's awesome but it's not available any where near me ....... or else I totally would

The car weighs 2700lbs it makes 287/319 as it sits right now on a bone stock 6.0 ran 12.9 in the quarter at 119mph on **** tires

Is the turbo I suggested adequate for my application ? I'm open to suggestions
I am wondering if this turbo has a good spooling sound, I really would like a loud spool I know it has alot to do with the intake setup before the turbo and the exhaust and compressor housing but I've heard a 5.3 with a ebay turbo with no filter on and open Dp and the turbo was pretty much silent on 16lbs sounded NA untill the pull was finished


Is there anything you would change or add to my list ? I'm not really on a budget but I don't want to spend money I don't have to (i.e. forged long block etc) unless it's on the fuel system, I've skimped out on a turbo dsm fuel system and it went how you think it went .... bad went lean and took a dump

 

 

 

I wouldn't put that on. 7675 minimum

 

If I'm not mistaken a tc76 is a 7675 turbo

 

Anyone ?

 

You'll hit your goals. I'd really opt for a camshaft and a little more turbo, but that's just one guys opinion.

 

No it's a 7668. I've had both on mine before, tc76 is retarded on a v8

 

Seems like a tc76 is a decant turbo for.a stock lq4 with my goals ? I'm nt aiming for big power jus something that's fun

 

K whatever you say, put a cork in it, it will run awesome

 

Like I have said I have had the exact turbos on a 6.0 in a Fc....... The 7675 does everything better, yes I mean spool too

Driving a 76mm compressor with that turbine is retarded

 

Correction.... trying to drive

 

You'll be out of gear fast. At 6800 RPM and 1:1 you'll only be around 118mph. Look into the 8.8 rear swap and get a decent gear in there. Taller tire would help too. Gear and tire made the biggest difference on my FC.






I agree on the turbo... I'm sure you could make 600hp with the TC76, but there are better options. Wish I wouldn't have farted around with T4 dinky wheel turbos at this point. Look into a box stock T6 1.32 S475. Best turbo out there for entry level LS engine IMO @ $640 shipped.

 

that car looks pissed

 

It will be a 8.8 eventually. I just am looking to get the turbo system on before that.

So, an s475 BW ? Thought that's what alot of people who drag race with autos run ? If it spools quicker than a tc76 and makes just as much power I'll take the advise

 

Can’t say it will spool faster. I can say it will make more than enough additional power per pound of boost that I doubt it will matter.

If you want something that will spool fast go with the new SXE366 or SXE369. It’s a Borg S300 series. (smaller) With the new SXE billet wheel design. Basically flows what the big cast 75mm wheel does in a smaller package. Super BA turbo. It’s a 73/80 turbine wheel I believe.

This is just the core, you need to buy the exh. housing too (think it’s $158). Really good deal though IMO. Looks like they are out of 69mm “super cores”.

Here is the 66mm. So like $750ish total.

http://thmotorsports.com/borgwarner/...i-2283234.aspx

 

Does anyone have any experience with a s400sx 72 with a 1.10 a/r ? Sounds appealing and from what I've read will spool somewhat decant on a 5.3 but what about a 6.0? The prices of BW units are hard to pass up and they seem like a quality unit with reliability

 

Look at the compressor maps/flow rating of the SX-E line... Even a 66mm SXE is rated at 94lb/min. Thats more than enough to hit your 600whp goal with tons of room to grow. No need to step up to the larger S400 frame IMO. It wont' spool as quickly.

 

If you ever hook the power you should make with that combo the CF clutch will probably disintegrate. I have seen a CF DF clutch break springs and rip apart with barely 550 rwhp on a Mustang dyno. And that was a high winding NA motor making a lot less torque than a turbo 6.0 should.
edit-- BTW, the MAF will max out, so you may as well not use it.

 

Hmmmm, this is a 2700lb car I'm sure the clutch will hold with 600whp whike hooking this isn't a heavy fbody etc.