BC178

So guys sorry if this has been beatin to death but couldnt find adequate information on a setup specific to mine.

Ls1 347 (waiting to be built), t56, twin turbos. 90 % street/ weekend warrior, 93+meth/water. Goal: 900whp +/- and possibly hit a 9 second et on a good day.

* looking to see what turbos/size would be good.

Hopefully can get things narrowed down some so i can start pulling the trigger!
Thanks for the help

Ryans99ls1

iTrader: (16)

If you are set on twins, twin 57s will get you 800 and spool quick. Id go in the 62-66mm range to leave me with some room to grow though. If you arent set on twins, a single precision 76mm took my car to over 800 but its not gonna take me too much farther.

You are going to need at least a 28in tire to have a chance at hooking, so id go with 3.50 rear gear. Should put you at about 145mph around 6k rpm in 4th gear.

BC178

I planned to stuff the biggest tire I could on the car, do have decent suspension also to help traction.Twins to be different, spool, looks. Not sure if I'll ever want/need more hp but rather be able to then redo everything. Was thinking on3 61 mm turbos and upgrade next winter? Thanks for your advice man, I appreciate it. Btw how do you like the turbo and m6?

Ryans99ls1

iTrader: (16)

61's will do well. Brand is your choice.

I personally love the six speed and boost. I frankly dont care to hit the track THAT much and if/when I do, it's more of challenge to see what i can do with the car. The drivetrain is built to handle pretty much anything but its a highway car for the most part and I dont really see a need for an auto.

If i were shooting for a specific e/t, it would get an auto. If you like driving and just being an idiot when no one is around, manual all the way.

oscs

iTrader: (19)

Look at turbonetics they make a quality turbo for not a lot of cash. $6-700 range and have a killer warranty. My 66/65's spool very very well on my T56. Anything in the low 60 range will light up plenty fast on the 347. Make sure you have a good cam picked out and youll be fine.

stevieturbo

AGP say their smallest TT kit with 54/57 turbos will do around 800hp.

Something like that should spool very well on the smaller motor. I'd be a little cautious about moving to anything in the 60mm range with your setup in mind

http://www.agpturbo.com/camaro-5-ss-agp-twin-turbo-kit/

DEFYANT

I kind of agree with Stevie, but I would go in the 61-62mm range, Turbonetics make a good turbo in that range, and for a little more going Precisions would be nice. Another option would be GT35R's, Garretts, not a knock-off. Twin 62s will have the ability for 4 digit HP, and still spool nicely with the proper cam and tune.

BC178

I was thinking in the 61 62mm range, I plan to have one of 2 people spec me a cam so should be good. Would actually like to talk to them as well to see what they think also. So far good info guys. Keep it coming!

oscs

iTrader: (19)

61/62 will light up like the 4th of July with a good cam. Good luck man.

MertezWS6

iTrader: (8)

As far as gear ratio I would go with 3.90. There is a turbo Camaro M6 running 8's on here. I have 3.50 in my car now and doesn't 60' the best. plus its a 6 speed.

Ryans99ls1

iTrader: (16)

If he throws a 30in tire under the car he could do 3.90s (maybe). but if he is really making 800hp, he'll either have to shift to 5th or wrap 4th pretty damn high to get the mph that thing should be capable of.

BC178

No set et for this car, hit track Maybe once a month. Would like to know it can do well tho, no point in having X hp if it runs shitty at the track= shitty on street/pulls.
I would be most likely running a 28" tire and was thinking in 3.50 range.
For fuel I'm thinking of doing the mighty mouse diy pumps, fpr, lines.?
Thanks guys excited to get this on the road. First turbo car.

stevieturbo

If it's a 28" tyre, then 3.7 or so might be fine, 26" then maybe 3.55

BC178

Just purchased huron speeds twin turbo kit! Looking at 9" wavetrac, back braced, narrowed 3", x gear ratio. What would you guys suggest for fuel system? Trying to save where I can. Thanks guys

IronBlocked

dual walbros 255s -6 to the stock rails and an aeromotive reg stock feed as return

BC178

Was planning to do mighty mouse diy. I just can't see spending $1600 on setup I see guys doing for under 800. Only problem I have is I've never done a fuel system.

DEFYANT

I would do AEM 320's, -8AN Feed, and the stock feed as a return, then a boost referenced FPR, as for injectors, 127's will give you room to grow.

BC178

Ordered my rear last night. S60 S-trac with 3.54 gears.
Thanks for the help so far guys. Always nice getting a few opinions before just buying stuff

BC178

Anyone use xspower wastegates/bov? Anywhere I can save a little money and can upgrade down the road would be nice. Was also thinking of running on3 61mm turbos and going better next winter. Just a thought

98Camarod

iTrader: (43)

The turbonetics 6665's spool nicely on my 347. I'd check them out if you haven't already.