nick97ta

iTrader: (3)

I am looking at the TC78 turbo from turbonetics to use on my 06 GTO with a stock bottom end and a 6speed. I only see one exhaust AR of T4 with 0.96, I don't see any other size ever shown for them and I feel this may be small for my setup. I do not plan on building a bigger motor, but if and when this motor gets hurt I will just build another 6.0 with good rods and pistons. Also only looking for 7-8psi on this motor.

My questions are
-Is there other AR's for this turbo
-will the 0.96 be fine with this setup


Tell me what you guys think!

1999Black_Z28

iTrader: (1)

I would look into the T-netics 7875 or 7675. Contact Huron Speed for great deal no matter which one you decide on

oange ss

iTrader: (50)

1.15 are pretty common

Superman09

iTrader: (65)

I can get you the TC78 in .81 or .96 open, or the 1.15 divided. No problem, I usually keep a .96 and 1.15 in stock as well, no price difference either!

The new 7675 or 7875 T-series from them might better suit your goals. Features a 75mm turbine wheel as opposed to the 68mm wheel in the TC turbos. Let me know and I would be glad to answer any questions you may have or get you set-up!

If you want to stay with the TC78, I would recommend the 1.15 a/r


Jon

LS1NOVA

iTrader: (12)

Get the 75mm turbine and .96 ar.

nick97ta

iTrader: (3)

How bad do you think the back pressure will be on the 68mm wheel with the 1.15ar? I will never run over 6500-6700rpm with this motor and it will only be a street car.

Texhotrod593

iTrader: (7)

backpressure will be at least 2:1 at 7-8lbs so somewhere probably around 20lbs Im sure BUT it will be manageable because you wont be boosting to the moon with it. BTW for a 6speed 1.15 will work but .96 will be better. I would get a 1.15 if I had plans of going auto later...

SPRAYED 01

iTrader: (22)

I don't see went any one would still put at tc with the 68mm turbine any more. Go with the 75mm and never look back

nick97ta

iTrader: (3)

Because I don't want to spend that kind of money on a turbo and I'm looking for a turbo that will fit under my hood with out cutting the car up. If it will not work I will start looking at other turbos in $700 range.

Superman09

iTrader: (65)

As stated, it will work, but it won't be the most ideal. Backpressure probably will be a little on the high side. I would definitely go with the 1.15 a/r if you do choose this turbo however to help as much as possible! Hard to beat the TC series for the price and quality of a turbo you receive for it. They work terrific on the 5.3's, the 5.7's and 6.0's are on the edge for the 68mm turbine.

SPRAYED 01

iTrader: (22)

How much more is the 75mm turbine? Isnt it exactly the same size physically?

nick97ta

iTrader: (3)

Almost $500

Superman09

iTrader: (65)

The entire turbo itself is slightly larger being it is a T-series, over the 60-series covers that the TC "Hurricane" turbos use:

Hurricane: http://www.turboneticsinc.com/sites/...RIES_TURBO.pdf

T-series:
http://www.turboneticsinc.com/sites/...RIES_TURBO.pdf


Jon

Robertvon

whats the current price on the 7875 because I to was also looking to buy a TC78 in the next couple weeks

Superman09

iTrader: (65)

List price on a 7875 is a little over $1200, they are standard in Ball Bearing however!