Supercharged Tahoe TBSS

[sumo]

Yea bypass valve what the roots style supercharger use. Mounted after the throttle body. I don't see a way a roots or twin screw could use a bov. I suppose if you use a centrifugal supercharger that mounts before the throttle body you could use a bov as excess pressure needs to be vented somewhere

 

[Meccanoble]

Ohhhh ok, the one i had was in front of throttle, centrifugal sounds very familiar

 

[Pittz]

Put meth on that Maggie. I utilize my WW tank and have the capability of still washing my windshield, if need be. Even on hot ass days I will only lose about 1/2lb of boost, compared to other guys who have lost 1+ lbs. I tapped mine just at the sensor, so I know exactly when it is low and need a refill. I will be tuning for meth soon! I would not recommend that for anyone who DD, in the event you run out of meth. I do not DD mine at all. Meth starts to come on at 3lbs and full meth at 10lbs.

This is on my Jeep SRT8.

 

[sumo]

Been awhile. Had a bad pinion bearing that was really bad. Was hoping it was a u joint but no luck. Replaced with greaseable moog joints and did a fresh rear diff service. Nope. Definitely from the rear end. I was gonna build it up but I found a complete same rear end and got it off a Tahoe with 60k on it for $675. Swapped rear ends out at the shop on my own time. Now hooks up no problems. Next will be my performance trans to install.
This was my drain plug with less than 100 miles on it. The royal purple fluid I used was purple with silver glitter flakes in it.

 

[sumo]

Testing out the new rear end. Highway merge from break down lane. Had ac on and forgot to put haul ass mode on but whatever. Had to stop, caught up to traffic faster than I had planned for

 

[Rocket Man]

Very nice.

 

[Fosscore]

No such thing as too much fun. Sweet.

 

[Tonyrodz]

Testing out the new rear end. Highway merge from break down lane. Had ac on and forgot to put haul ass mode on but whatever. Had to stop, caught up to traffic faster than I had planned for

Sounds great, hauls ass even better.

 

[sumo]

No such thing as too much fun. Sweet.

Yea there is. When you go past that 1 psi of boost too many. Haven’t found that spot yet and hopefully I dont

 

[Meccanoble]

Couple of questions:

1) How fast would you say you are in the 1/4 mile and how fast is stock, just to compare
2) All that power, sounds like a suspension upgrade is a must? I can only imagine the dip that truck takes
3) Aside from routine maintenance, is there anything additional you had to do to tranny to take the abuse of more power?

 

[sumo]

Couple of questions:

1) How fast would you say you are in the 1/4 mile and how fast is stock, just to compare
2) All that power, sounds like a suspension upgrade is a must? I can only imagine the dip that truck takes
3) Aside from routine maintenance, is there anything additional you had to do to tranny to take the abuse of more power?

Never took it on a track. I got a vid of a dyno run when I was only at 6 psi.

As far as suspension, I have lowering kit by beltech 2/4 factory suspension but bilsten 5100 struts In the rear with air lift bags. Front struts are o my list to do soon

Tranny wise I have oem with a corvette servo. I do however have a Gearstar performance transmission with a yank torque converter 2800 stall rated for 700 horses. To finish it off, I have a circle d lightened flexplate to install too.

 

[Chrismnj]

Doing similar project, well done!

 

[Foggy]

My project is coming along too. Doing the edelbrock charger.
Did the 6L80E trans work first. Cirlce D Level 4 w billet planet,, etc
I used a modified factory type torque converter. And Kooks SS ceramic coated
headers, Y pipe, Catted

 

[gat0r]

^ sounds fun

hopefully your s/c works out better than one in YT from RPM

 

[sumo]

My project is coming along too. Doing the edelbrock charger.
Did the 6L80E trans work first. Cirlce D Level 4 w billet planet,, etc
I used a modified factory type torque converter. And Kooks SS ceramic coated
headers, Y pipe, Catted

can’t wait to see that. Believe it or not, I’m at 130k stock trans with vette servo and tune. I have a gearstar trans, 4L80E withlighter flywheel, 2800 stall converter to still install. My stock won’t quit

 

[Foggy]

My project is taking longer than had hoped.. I got the trans all done first. Then the Hummer Motor Mounts with new Gm Trans Mount too.
Headers were an OK install.. Now still have to pin the crank and install everything.. running into little things to do
"while I'm there" kinda stuff. Like starter, cam sensor(leaking oil) crank sensor, knock sensor that wasn't even hand tight bolt into block,
Mishimoto radiator, and cleaning everything up perfectly, along with new updated heater hoses and Y fittings too...
I still gotta do the rear end mods.. But that might have to wait til after my dyno tune next week...
I've got the Spohn lower control arms, QA1 panhard bar, powertrax helical gear posi to replace the G80, TA Perf rear diff cover, etc etc

Trying to make this thing absolutely bulletproof to handle the new power and towing. I tend to overdue stuff !!!
But don't want to get stranded somewhere. I just bought this last July and have been tinkering since !!!

 

[justinesky]

I'm thinking I really dont know much about forced induction

centrifigul SC do have blow off valves. My expedition sounds like a jet when its open. If yo close the TB at boost weather its a turbo or sc, you still have boost pressure needing to get out. The sc in question on this post is a roots type so not ussually a blowoff. minw works just like a turbo but instead of exhaust spinning the turbin its a belt

 

[Foggy]

I figured I'd post here, I cannot get my Yukon to start and run
after my supercharger install... AND my dyno appt is in the morning !

Cranks, Acts like it wants to start/run for just a couple seconds..
I have plenty of fuel (because I had a big fuel leak, had to go back into to
change an injector O ring)...
I have NOT put any type of tune in it.. I figured it would start and run Ok enough
to limp it to the dyno shop
ANY Thoughts ????