Ls1Rx-7

iTrader: (4)

i want to have my cake and eat it too, looking for something with fast spool and a nice meaty powerband. ive heard great things about the twin scroll borg warner units and heard the spool on tc78's werent bad. what do you all reccomend?

MY99TAWS6

iTrader: (3)

Properly sized twins are hard to beat but there are some interesting options out there in singles these days.

If I have any complaint from my setup its that my turbos almost come on too quick two low on the powerband and of course traction is a big problem then.I guess could go down on gear but I like my 3.54 off boost around town. To me 3.08 or so gears are fine for highway in a turbo 400 but not needed in a 4l80 with overdrive. And the theory about them spooling up turbos quicker well not sure I buy it.And even if did don't care as said fast enough spool already.

But if you goals are only 650rwhp then yeah you can run smaller single and get what you want..

dudeman

iTrader: (43)

i just put a 6.0 in my car with a tc78. i am using the 1.15ar exhaust housing. i am running 17lbs of boost. i think its a really good turbo for the street. i havent had it on the dyno but i would say it is in the neighborhood of 650whp.

GMCtrk

iTrader: (23)

ball bearing or journal bearing?

dudeman

iTrader: (43)

journal bearing!

Johnv

be very interested to see what your putting down,
my TC78 did 622rwhp at 16 psi with a 1.0ar housing (383)
have stepped up to a 1.32ar, pulls stronger up top ,spools just as quick, no new dyno numbers yet.

skinnies

iTrader: (33)

sixspeed or automatic?

I've ran GTS 76, a ball bearing turbonetics, and the TC 76 and TC 78, hands down the TC turbos spool faster than the others, quite noticeable IMO.

Ls1Rx-7

iTrader: (4)

6 speed, will the tc78 really out spool a borg warner unit? i heard they were some of the best turbos out there?

4SFEDZ

iTrader: (6)

for the price yes, but would be pretty laggy on a 6speed street car!

Johnv

The TC 78 is a good match for a M6 car.
You could go bigger with an Auto and stall as lag is not such an issue.

dudeman

iTrader: (43)

mine is a six speed car also.

stock48

iTrader: (17)

My Tc76 bb .96ar spools really quick on 370ci. I think a 78 wouldnt be too much slower. I dont think you need any more than a tc76 for 650hp on a 6.0l.

bad6as

iTrader: (17)

that tc-78 sould like a good turbo for what you want. but with that many cubes your power goal might be the limit with that turbo

DrTurbo

iTrader: (3)

We have sold the TC's to many customers and can tell you their really isn't anything out there that will outspool the TC's...period. For their size, price and punch, it can not be beat.

Ls1Rx-7

iTrader: (4)

thank you all for your help, tc78 it is!!!