Forced Induction Custom FI Setup Questions

98 Trans Am custom rear mounted turbo

Old 03-06-2013, 09:07 PM
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Default 98 Trans Am custom rear mounted turbo

well, i guess since this is a turbo forum lol id hit up a forum for insight and ideas for my build to make sure ive got everything covered. Ive already got most of this build up on the LS sight for specifics on LS1's but just wondering for a more broad spectium of people to get more info.

first off, yes its a rear mounted turbo, no it is not an STS system so if you feel you need to get the "rear mounted turbos suck" outta your system... go do it somewhere else. its already been proven with the right amount of work and research that a rear mount can perform, very well. YES a front mount is mroe efficent. GOT IT... blah blah blah...

ok some background info

301RWHP 314RWTQ
Stock 98 LS1 engine
Ls6 intake
Ls6 PVC system
OBX LTHeaders
LLP catted ORY pipe
Tr6ix plugs
MSD wires
80mm Throttle body
85mm stock truck MAF
SLP LID
K&N filter\
Frost tuned PCM

Stock A4 trans
3200 revmax stall

Full UMI suspention front to rear
BMR F/R 35/25mm swaybars
Koni SA shocks F/R
Vogtland 1.25 lowering springs

stock rear end
2.73 gears

PHEW ok heres what ive considered getting after some research and asking around and crosschecking. heres whats what

INTAKE
Cone filter tucked into wheel well
3” intake into turbo
2.5” charge piping
T-bolt clamps and reinforced silicon hose couplers
31x11x3 intercooler
BOV and pipe
LS6 intake manifold
LS6 valley pan
4 port vacuum manifold

ENGINE (this stuff will be installed later)
Stock 5.7L LS1
Tick custom rear turbo cam 226/235 .605/.610 114+2
Tick supplied valve springs
Tick supplied pushrods
LS2 timing chain
Stock Heads (317 with .048 LS9 gaskets later for 9.8CR)
Comp cams Rocker trunion upgrade
ARP crank bolt
Head studs

EXHAUST
OBX headers
Catless 3” ypipe with OBX resonators
Stock I-pipe
Sts style T4 header pipe with 44mm wastegate port
3” after turbo resonator
2” Wastegate dump exhaust
3” turbine exhaust
4” corsa clone tips/3” inlets
100'x2" x1/16" black exhaust wrap

TURBO SPECIFIC
ON3 T76 w/.81 AR (.96 later)
Compressor Wheel 76mm
.80 a/r
4” Inlet and 2.5” Compressor Outlet
Inducer- 76.71mm - Exducer- 102.36mm
Exhaust Housing T-4 Flange
.96 ar Exhaust Housing
3.0" Vband outlet
Inducer- 74.5mm - Exducer- 65mm
44MM wastegate 4psi spring (10psi spring for later)
55mm BOV
AEM Meth kit

TRANSMISSION
Stock 4L60E
Revmax stage 5 billet cover 3200 stall
B&M tran cooler
Glowshift trans temp gauge

OIL SYSTEM
LS6 oil pump
4an feed
Summit check valve
10an drain
4psi hobb switch to piezo buzzer alert
Gear scavenger oil pump and custom harness
10an return line into oil pan

PCV system
LS6 valley pan with PCV valve
Catch can
Check valve
Vent line ran to fresh air intake tube from valve spring cover

FUEL SYSTEM
Stock fuel rails
Racetronix 225 fuel pump and harness
Aeromotive boost referenced fuel pressure regulator with 3/8 line return
60lbs siemens injector

ELECTICAL
NGK Spark Plugs BKR7E-11 5791 gapped at .032
MSD wires
Stock coils

ENGINE MANAGEMENT
Innovate MTX-L wideband
Glowshift digital boost/vac gauge
Glowshift digital fuel pressure gauge
Frost base tuned (HP tuners later)
GM 2 bar MAP sensor
GM 85mm MAF sensor
IAT sensor in MAF used, using wire adaptor.

MISC ITEMS
GM 93-97 radiator cover
Glowshift 3 gauge a-pillar pod

Shooting for 550HP with a good tune. gonna keep it under 10psi.

with that said, lets here some critiques while i compile parts. pics and progress will be posted as it develops. I thank Zombie, 1320, HRHohio, and ZL1killer for the inspiration. thanks for paving the way for us guys.

Last edited by JoshuaGrooms83; 03-06-2013 at 09:12 PM.
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Old 03-06-2013, 09:10 PM
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some pics of what ive got already. i litterally will have this up and running before the end of the month.












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Old 03-06-2013, 09:10 PM
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Attached Thumbnails 98 Trans Am custom rear mounted turbo-p1040722_zps2ca6e084.jpg   98 Trans Am custom rear mounted turbo-p1040723_zps26ac06a7.jpg   98 Trans Am custom rear mounted turbo-p1040725_zps37bd4b0c.jpg   98 Trans Am custom rear mounted turbo-p1040726_zpsed4b2b5d.jpg   98 Trans Am custom rear mounted turbo-p1040727_zps22eb0ab3.jpg  

98 Trans Am custom rear mounted turbo-p1040728_zps1e652b5b.jpg   98 Trans Am custom rear mounted turbo-p1040729_zps4d289f4c.jpg  
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Old 03-06-2013, 09:15 PM
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Attached Thumbnails 98 Trans Am custom rear mounted turbo-p1040668_zps004788e6.jpg   98 Trans Am custom rear mounted turbo-p1040667_zps4cff0c3b.jpg   98 Trans Am custom rear mounted turbo-p1040562.jpg   98 Trans Am custom rear mounted turbo-p1040563.jpg   98 Trans Am custom rear mounted turbo-p1040565.jpg  

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Old 03-06-2013, 09:17 PM
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so with that all added, what do ya'll think?
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Old 03-07-2013, 07:22 AM
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lookin good!

Can't wait to see the results on video.....don't disappoint! :P
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Old 03-07-2013, 09:52 AM
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lol i shouldnt as long as the tunes on point lol

my best track time with current mods is [email protected] spinning horiibly on sumitomo tires in el paso's lovly 3800ft
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Old 03-07-2013, 10:53 AM
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come give 'er a run down here at Baytown....damn near 0ft.
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Old 03-07-2013, 02:10 PM
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would be nice!
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Old 03-08-2013, 01:20 PM
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well got my new couplers to run MAF-less for SD tune. makes it easier to plumb the water/methanol injection now
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