jayem

Been searching and searching and not finding exactly what I want. Basically can't decide which to go with on my setup. I'm currently running a tc76, but my power goals are 850+. This is my setup

5.3 bored to a 5.7
Mahle pistons
Scat rods
Stock crank
Arp main studs
Tms head studs
Arp rod bolts
Ls9 gaskets
Port and polished 243 heads
Ls6 intake
Tick stage 2 turbo cam
T56 with monster 11" ceramic clutch
4.10 gears in the rear. Will probably be switched out at some point

Any firsthand experience would be great to hear on either turbo. Both are about the same price wise. Just can't make a decision on which to go for and which is going to get me that power. Again comparing a journal bearing precision 7675 to the turbonetics billet 7575

LS1NOVA

iTrader: (12)

The Precision 7675 cea will make more power.

jayem

Bump still debating. This tc76 is pulling hard on 10 pounds though. Haha

HydroStream6

iTrader: (16)

I went from the TC76 to the Precision 7875 and was very happy with the results. This was on a 370 inch motor. Went 145mph in the 1/4 @ 4200lbs on the Precision and still had room to go.

stoverz28

iTrader: (8)

In for results.

Seems to be a lot of people who went from the TC7868 to the precision but not many who made the jump to the TC7875

NastyN8

iTrader: (1)

I have the turbonectics 7875. Nothing to compare it to though. Just finishing my build. Waiting for the snow to melt!

sbcgenII

iTrader: (1)

What was the before?

Ryans99ls1

iTrader: (16)

I went from a TC78 to a Precision cast wheel 7675. Picked up a ton of power, go through my build thread if you have time. Either the turbonetics or precision will make about the same. Its the 75mm turbine that frees up all extra power. Pick one and go.

I made over 850whp and 900tq through a 6spd with the precision fyi.

gnx7

iTrader: (28)

TC78 on a forged rods:pistons 10:1 ls3 and ported LS3 heads stock ls3 intake baby cam went high 9's at 150mph best. On a billet wheel GTS76 the car did 9.20's@162mph... Giving it all it's got. Spool was the same and in mid/top end RPMs the power stayed strong. With the TC78 it felt soft up top. Both ran 3" downpipe. Moving to a billet wheel PT4788 (t4) spool slowed down a little and motor was swapped to an LS9 block, stock crank, 10:1 forged rods/pistons, mast ls3 heads, stock intake, 3.5" downpipe ran 9.3@163mph without pushing it hard. Snapped the crank after about 200 pulls on freeway, 1/2 mile racing, strip. Rebuilt for this year on a forged crank will shoot for 8's. This is on a T56 and 3.31 gears, 275/60/15 m/t et street drag radial. Zero boost launch so far. It pulls crazy hard at 20psi boost in 4th and 5th gear! Spins the tires at 180mph! E85 all the time. Holley ecu