2002 Turbo Tahoe

[rbarnes]

Latest project is

Turbo Tahoe .... aka ..... " We Just Got Spanked By That ?!?!? "

Bone stock 5.3L Tahoe.
Turbonetics 62-1 turbo with .81 a/r
27X12X3 intercooler ..... $100 ebay special
Built 4L60E - 2WD.



Real basic build. Stock driver side manifold into 2.5" crossover
under the trans. up into a 3" log header on passngr side.
3" downpipe with high flow cat into stock 3" cat back and muffler.

Run some green top 42lbs injectors and a high pressure 255 Walbro pump
and use HPTuners VMC suite for the tune running straight SD set-up.

Going to go ahead and throw 12-13psi at it see what kinda power we
can get out of this 5,000 lbs grocery getter.

Trans gets installed this week with new Circle D 3,000 stall converter.

Some LQ9 coilpacks off ebay to beef up the spark


Passenger side log header



Intercooler is mounted.


40,000 gvw RV trans cooler


Turbonetics 62-1 turbo

[daddyzzs]

looking good keep the updates coming.. I was going to do an STS but after everything I've heard I've desided not to.

[Ed Blown Vert]

Nice!

[rbarnes]

Picked up the built Stg3 4L60E today.

looking good keep the updates coming.. I was going to do an STS but after everything I've heard I've desided not to.

Check out Trick Performance.

Got my log header from him. Keeps full kits in stock
Good design. Excellent workmanship and customer service.

[daddyzzs]

thanks Im going to check them out and get my turbo on
I'll post the build up as I go that's a better price anyday then sts

[rbarnes]

Bone stock 70,000 mile 5.3L baseline dyno pull

205rwhp and 214rwtq

[01 SS Vert]

Bone stock 70,000 mile 5.3L baseline dyno pull

205rwhp and 214rwtq

I was expecting a little more than that. What are those stock again?

[totalkos]

I was expecting a little more than that. What are those stock again?

285-295 at the crank i beleive. seems like its about 10-15hp low. probably just needs a tune up?

[rbarnes]

Tune goes a long way on these engines.
70,000 mile engine with original plugs and wires and stock paper filter in the air box
and mechanical clutch fan that I'm sure doesnt help any.

They are 5.3L engine with heads that flow VERY close to 98-00 LS1 heads.
Truck cam, intake and tune are just very limiting.

Computer kept shifting up into OD at 5,100 rpm too.
Might pull up to 210-215rwhp at 5,300-5,500rpm if we could have kept it in 3rd.

[rbarnes]

. dub post

[rbarnes]

Went by the good ole pick-n-pull and got a Y-pipe to hack up
leaving my original intact.

$50 and some knuckle skin got me a spare 3" stock cat-back flange for the downpipe
and the unfindable funky 3 bolt flange GM decided to use on the driverside
header for some reason.

Start some serious fab work on the crossover and downpipe now.
Got my 44mm Tial wastegate in and all the flex couplers should be here on Monday or Tuesday.

[rbarnes]

Got the flanges cut off and cleaned up.
Should make tapping into stock exhaust a snap.



Tail 44mm wastegate with 13psi spring ready to go.
$100 ebay cold side pipe package got in too. Should be enough.
Might need 1 or 2 more silicon couplers.

New trans is being installed today.


I also plotted out airflows on the 62-1 compressor map.
Using 323cid, 82% Ve, and 5,200 rpm at 13psi.

Looks good. Perfect line plotting on the map.
Spools up and hits max boost right in the center of the map
and just barely bumps the "choke" line at max rpm.

[rbarnes]

New OEM 05-06 Tahoe e-fan got here today
Got the swap harness from Nelson last week. Install looks pretty straight forward.

Should be last supporting mod I can think of to get everything ready
and make needed room for turbo stuff.

[noxside]

Keep the updates coming!

[rbarnes]

Got last of the hot-side parts in.

Just waiting on the high flow CAT from Jegs for the downpipe.
fingers are officially crossed I dont have any emissions test problems





Got the good expensive flex couplers with the inner flex-pipe lining.
The cheap-o ones on ebay do not have this.




Should make some serious progress this weekend.

[rbarnes]

Got the late model Tahoe e-fans in yesterday. Running the wiring
and cold side from intercooler to TB this morning.

Start on the hot-side this afternoon probably.

e-fan took all of 30secs to install. Slipped right into existing tabs
and bolt holes from the factory. Even had a hole on top of the fan
in same place for factory radiator hose retaining clip.

$250 off ebay, brand spank'n new, not used.

[rbarnes]

Cold side from cooler to TB is done. Took about 20mins
Just need a 4" to 3" coupler for the TB

[RedVertTA]

Nice build, defiantly unique. Keep up the good work.

[rbarnes]

Houston, we have turbage ......... LQ9 coilpacks are on too







Started on DP fabrication

[rbarnes]

Crossover is halfway done, Downpipe is halfway done.

Plenty of room to route crossover around 4X4 driveshaft if it
was there too.