murdock.dean

iTrader: (14)

I just picked up a 2000 sierra 2 wheel drive, standard 5 speed. Im lookin for some advice on a turbo build. I have have numerous nitrous ls1 cars and even a turbo 5.3 liter z28 but this is my first truck build. Im lookin to make 550+ at the wheels. What upgrades will have to be done to it to hold up. I want to run a 90mm turbo at around 15 psi. I know the simple thing like a good fuel system will need to be done but i am lookin to run a stock bottem end for now.

lglowe

iTrader: (3)

Ha! 90mm is way overkill for a 550+ goal. Get a Borg warner with a 72-76 compressor and 83 turbine... Will support a lot of power

murdock.dean

iTrader: (14)

Ya but im lookin for 550 on stock bottom end for now. When it goes will be goin forge and high out puts. so figure og big now and wont have to worry later.

murdock.dean

iTrader: (14)

With all these high hp powered truck and no advice. lookin for pointers on Cam, head gasket, header for a front mount turbo and things like that, thanks

idahoblkss

iTrader: (9)

im no turbo expert buy all means and i understand the go big the first time logic but a 90mm... really? specially for 550 hp wtf lol . that big of turbo is good for 1000+hp to the wheels im sure . even a 76mm will get you 3/4 of the way to 1khp im sure. if you do a quick search here you will find a couple guys that make custom pipes for turbos at a fair price .

lglowe

iTrader: (3)

Isky 212 112, ls9 gaskets, arp head studs and kb racing turbo kit.

nonnieselman

iTrader: (10)

i second the Borg S475 75/83mm..


which 90mm turbo are you lookin at?

You could make 550rwhp on a small 65mm with a good size turbine...

but what size engine you plan on building? try starting there and find a turbo for that engine and use it on your 4.8..

03regcab sierra

iTrader: (7)

The 5 speed manual will break at that hp goal u want. Either swap to a 4l80e or a built t56. Ls9 gaskets head studs ect are all a must. Dont forget about the axle it wont hold up long under boost. read some of foose04's threads there is more than enough info to tell u want u need to complete ur built

Beatdown Z

iTrader: (18)

Ebay GT45 would be sweet and you can just ship it to me when your done, lol.

xx_ED_xx

iTrader: (17)

The output shaft of the nv3500 is a helluva a lot bigger then a viperized t56. I know because I went from one behind a big block that lasted a couple of years no problem to a t56. The gearing in the trans is all wrong and they dont like high rpm shifts. But breaking it is another story....