T76s10

iTrader: (6)

as many of you may know, i swapped a 5.3 in my 96 s10 with a rear mounted t76. took her up to 18lbs and she popped a head gasket and i also heard some clunking. tore it apart and the entire rotating assembly was in tact. found a good deal on an lq4 and decided to part everything out and do twin 70mm front mounted turbos. the rear mount was cool and different, but i was really itching for some twins in the bay. here are some pics of the old setup.







and some videos of only making 5lbs due to boost leaks

it had tranny issues of automatically shifting from 1-2 because i need a full manual valve body and the converter was a cheap piece of junk so the engine needed to be pulled anyway.


heres whats going on with the new build.
2000 lq4 stock bottom end
TU2 cam
ported 317 heads
ls9 gaskets
arp head bolts
comp pushrods
patriot gold duals

th400
trans brake
yank converter
fmvb

twin on3 70mm .68ar turbos
custom log manifolds

my goals are to make 500-600whp on low boost and once the fuel system gets upgraded to 80lb injectors and an a1000 to make around 700 to the wheels. im tuning myself with hp tuners and a 2 bar sd tune. heres what i have so far







the 5.3 on the left, the 6.0 on the right


the shaved truck intake im using along with the fast fuel rails and the 60lb dekas


thats all i have for now. once i get more stuff sold ill be buying more parts. my 317's should come here soon and ill have some pictures of the port job ill have on them.

DavidPHumes

iTrader: (1)

I still think that t70's are way overkill for 700HP. Something like Precision 6262s would spool better, but even that's a 1,000RWHP setup easy.

Also do head studs not bolts!

Sarg

iTrader: (6)

Those 70s are kinda small on the turbine side. They should do ok from what I have seen, but will more than likely overshoot his goals.

T76s10

iTrader: (6)

Hey Dave i read that thread and its really good and has allot of really good info. The reason I'm thinking 70's is because they should come in pretty quick due to the cam and cubes and the .68 exhaust housing. Also, twin precisions would run me roughly $1200 and i can get the 70's for half the price. Also tirefryin_s10 recommended them on a different thread and he runs them with .68 housings i believe. And a video on YouTube the denmah posted has a nova with twin 70's and they seemed to spool quick. My goals are just to start out small, then once fuel system gets upgraded I'm going to see how much she can go until i hit 9's.

T76s10

iTrader: (6)

Hey sarg, are you talking ar size or turbine wheel?

a4ls2goat

What converter are you gona put in there?
Seems like your last setup took for ever to get into boost.

T76s10

iTrader: (6)

I'm putting a yank converter in unless theirs something better. The last setup had a bad boost leak through egr block off so i fixed that. Then it made boost pretty quick but i think the piece of **** converter was slippingething so it want pulling as hard asit should at 18lbs and then it blew a gasket

Sarg

iTrader: (6)

Yeah, the turbines on the on 3 are not that large. I think with the .68 you should be fine. As for the converter, I would go with Circle D converter. Their customer service has been awesome and I am sure the quality is every bit as good or better than a yank.

T76s10

iTrader: (6)

Ok I'll give them a shot. I think on3's 70's will work good and i liked my 76 so i think they will work. Plus their cheap and I'm broke until i sell More things so it all works out lol. I'm sure Dave thinks I'm a moron for my turbo choices

Sarg

iTrader: (6)

Either that or get a couple of Ebay T4 GT35's those are a tad smaller (60-62mm) and would spool very quickly. Depending on the unit they should be good to 700+

T76s10

iTrader: (6)

yeah i was looking at another ebay turbo by cx racing. its a 67mm and about the same price as the 70's but i just dont know. i trust the on3 units because i liked my 76mm so i know ill like the quality of the 70's but im a bit weary on the cx racing or other turbos. idk why, their all chinese?

T76s10

iTrader: (6)

heres a link to the 67's
http://www.ebay.com/itm/CXRacing-T4-...9f48c6&vxp=mtr

heres a link to the gt35's
http://www.ebay.com/itm/CXRacing-T4-...a6f1da&vxp=mtr

both cx racing units. i would probably do the 67's because i have a feeling the gt35's would be too small considering i will have a tu2 cam, ported 317's, and trans brake with 2 step so i know spooling from a dig wont be a prob but i want something quick spooling on the street and such. but im no expert on turbos what so ever.

T76s10

iTrader: (6)

david please chime in...

a4ls2goat

Twin gt45s

T76s10

iTrader: (6)

your a bad influence lol
i was, but i cannot find one with a smaller ar than 1.05!!! and imo, thats just too big for twins. although, their is a guy on here doing them on his lq4 monte.

T76s10

iTrader: (6)

im really leaning towards the gt35's. itll spool instantly and support my goals. plus their only $282 shipped

Wicked69

I use Precesion 62/62's and it took my 4,000lb Chevelle to 118mph! in the 1/8th using a completely stock 5.2!

T76s10

iTrader: (6)

ive never heard of a 5.2 ls engine? lol just bustin your *****. if i had the money for precisions, believe me, i would be buying them. but for now the ebay gt35's will have to due since they have similiar specs as the 6262's. btw, impressive times!!! these should bring my 3200lb s10 into 9's no prob.

T76s10

iTrader: (6)

my 317's came in today. getting everything mocked up. still need to port em and put springs in before i can install them officially anyway.



and heres somewhat of how the intercooler pipe is going to look coming off the intercooler

TurboS10

iTrader: (12)

Those ebay GT35's are more like 6162's from the listed specs.
Based on the size, they should push at least 500 hp each.

Plenty of turbo to take out #7 in a stock bottom.