So i found a Buick Grand Natinal turbo and want to know if anyone thas tried this, of coarse i realise it was made for a 3.8ltr not a 6.0 so what im trying to find out if i feed both left and right side cylinders (all 8) to the turbo would it create to much back pressure and EGT and burn a Valve? or Could i Run it off say just cly 1,3,5,7 and not hurt anything? Im only looking to get 4-5psi out of it onn my daily driver thought it would be cool. Let me know what you think
ls boards have all sorts of turbo combos- that theory of using one bank has me thinking ???
i think you would have to run all 8 threw the turbo becouse it would have more back pressure on one side then the other but that small of a turbo would probley work it would spool up quick to
http://www.hotrod.com/techarticles/hrdp_1109_stock_gm_ls_engine_big_bang_theory/ (http://www.hotrod.com/techarticles/hrdp_1109_stock_gm_ls_engine_big_bang_theory/)
READ THIS^^^^^^ id build it similiar, they have done the hard part. 1200hp stock bottom end? shiiittttttt!!!!!! AND they thought it was a 5.3, turned out to be a 4.8...
Go to eBay and you can buy a complete twin turbo kit for a SBC for around a 1000. Then all you would need is a custom burned ecm if you planned on running the fuel injection. My next motor is gonna be a twin Turbo ls motor but I'm gonna run a carburetor. I've done a lot of research and they say the stock ls bottom end and block will hold 1000 HP without a problem.
^^^^ either hot rod or car craft did twin turbo 4.8 stock bottom end over 60 dyno pulls think they got it over 1100 applaudd hp
Ha screw ebay!! My bro just told me he also has a buick G/N turbo, that means i just got way lucky and now have (2) New Buick GN turbos i need to figure out how to put on a 2500 4x4 this is going to be awsome!
I got it all figgured out to do it on my 84 chevy pickup...... cheap torque doubler!
nothing to it run your exhaust to it tap in to the oil pess sender and run to the turbo then return it to a hole in the oil cap. run pipe from turbo to intercooler then to intake you will need bigger fuel pump and injectors not to sure on chevy but on a ford you and run 10 psi on stock tune. you will want boost guage and air to fuel guage dont let it run lean get a 255lph fuel pump with adjustable fuel press regulator. you will need a external waste gate with a manual boost controller then a blow off valve before the intake. if you do twin turbo mount one on eatch side of the motor but you would probley need 2 waste gates, you could do a rear mount turbo and put in in the back under the bed but you would need a oil scavenge pump to pump the oil back to the motor or it will set in the turbo and thats not good for it.
Quote from: J.C. on November 03, 2011, 02:55:46 AM
http://www.hotrod.com/techarticles/hrdp_1109_stock_gm_ls_engine_big_bang_theory/ (http://www.hotrod.com/techarticles/hrdp_1109_stock_gm_ls_engine_big_bang_theory/)
READ THIS^^^^^^ id build it similiar, they have done the hard part. 1200hp stock bottom end? shiiittttttt!!!!!! AND they thought it was a 5.3, turned out to be a 4.8...
thats one pissed off 4.8 lol
Quote from: ice87 on November 12, 2011, 08:14:56 AM
Quote from: J.C. on November 03, 2011, 02:55:46 AM
http://www.hotrod.com/techarticles/hrdp_1109_stock_gm_ls_engine_big_bang_theory/ (http://www.hotrod.com/techarticles/hrdp_1109_stock_gm_ls_engine_big_bang_theory/)
READ THIS^^^^^^ id build it similiar, they have done the hard part. 1200hp stock bottom end? shiiittttttt!!!!!! AND they thought it was a 5.3, turned out to be a 4.8...
thats one pissed off 4.8 lol
iv turbo'd a few ls series engines. one thing i can tell you for sure is that if you run it off just one bank your engine will never tune right. on top of the difference in back pressure between the 2 banks will throw off you balance. think of it this way. you have 1 bank that will flow exhaust gasses freely(no turbo) and another one that will have about 50% back pressure, witch means will the piston can easily push the exhaust gasses out with normal force( which will be tranfered all the way to the cranch) the onther side is fighting to get the gasses out past the turbin making that bank push harder yet and throwing you ballance off.
number one rule to selecting a turbo for any application in you hot side A/R. if to small the turbo will be in boost by 1100rpm and overspin by the time the engine reach's the rpm the cam is happiest. to big and the turbo will never go into boost of spool.
from what i can tell and this is a guess becouse i don't know you total setup. but i would x-out the 1 bank idea and tire it into both banks and run about a 60 series turbo with a 1.0 A/R hot side or even a 1.15 A/R and use a waste gate to set your boost levels. master power turbo has some really affordable turbo. or mybe even that GN turbo might work depending on the specs. look on the casted steel side and read what the A/R is. hope this helps some.
It's a lot more than you think, from what I have researched on turboing/supercharging my 5.3 is you need a secondary fuel pump, some engines even need injector swaps also. Then you also have to reflash your computer to handle the new forced airflow and properly calibrate the amount of fuel to be mixed in (hence the added fuel system also)
That's why kits for these trucks are in the 3-4 thousand range, there's a lot to switch around for the computer system to play well.
Quote from: ToughBowtieTruck on November 22, 2011, 02:17:29 AM
It's a lot more than you think, from what I have researched on turboing/supercharging my 5.3 is you need a secondary fuel pump, some engines even need injector swaps also. Then you also have to reflash your computer to handle the new forced airflow and properly calibrate the amount of fuel to be mixed in (hence the added fuel system also)
That's why kits for these trucks are in the 3-4 thousand range, there's a lot to switch around for the computer system to play well.
your very right the last one i built was an E-85 car that had a researve 5 gallon fuel cell with 114oct. i had a aromotive a-1000 fuel pump that was the primary fuel pump. and a hobs switch that kick the aromotive eliminator fuel pump on at 2 psi boost. but your talking 1650Hp. at full boost. he will problebly have to increase injector size svo makes some good ones. and a fuel pump would never hurt. just to make sure there is no lean condition at any point.