Blevinator

Hello,
I am new to forced induction.
I have a 347CI LS1 that I will be installing a forged bottom end on.

What is the most powerful turbo I can use on this engine?
Thinking 76 or 78MM. I am thinking Turbonetic T76 or TC78.
I was told that even with these turbos I dont want to push over
700RWHP due to backpressure.

Can anyone tell me who has a great deal on a turbo head unit?

Any wholesale or group buys?

spaz1

iTrader: (9)

Are you going front or rear mount. I am have a rear mount setup and am goin to go with the tc 78..

RS_SS69

iTrader: (31)

Forced Inductions the sponser------->

Sells Turbonetics at great prices check out there site, either will get you to 700hp with supporting mods.

bad6as

iTrader: (17)

im also looking to do a 347 with a turbo. i was thinking about a tc78 but i dont know if that will be quite enough, and i think the pt88 might be a tad to big and laggy. im looking to spend around 1k on a turbo, also my car will weigh a max of 3200 lbs. ill have a 4l60e. whats a dam good turbo thats bigger and is as advanced as the tc78 but not as big as a pt88

Blevinator

I am going front mount per Kty Turbos recommendation. Have heard rear mounts are at a disadvantage? TC78 Im hearing is one bad ****?

1989k1500

iTrader: (23)

I would get a borg warner unit. S475, 600 bucks, capable of 950 or 1000hp. http://www.forcedinductions.com/productsborgwarner.htm

Dadkins on here is using an S372 on his GTO and making 825+ to the tires with a stock LQ9 long block.

black98ws6ta

iTrader: (77)

A PTE 76gts will make more power then a tc76-78 and still spool nice. They are alittle bit more expensive as well.

Josh@KY-Turbo

iTrader: (120)

You will not beat the spool up characteristics, compact size, price, and power potential of the TC76 or TC78. They are perfect fits for 347-370 cube LSx based engines. I have persoanly pushed these turbos to thier limits. Been 9.70's with a TC76 370 combo. Same car later made it to the 9.20's using the same TC76 370 combo.

The TC series of turbos are rated for 3" Down Pipes. I never had back pressure issues with my setup.