5.7 turbo sizing

[bulldog11267mad]

if i was to run a twin turbo set up on the 5.7 tundra what size turbos would i need to make 600hp i would want the turbos to kick in at about 2,000 rpms.

[wolfeman28]

If you are going to run one off of each manifold, and want lower rpm boost like that, I would say go with some type of t3/t4 hybrid... If you want to go the cheaper route I would say two 50trims would work well, or if you have the money some GT35R's would slay.... You could probably push over 600 easy with these setups....

[bulldog11267mad]

i was thinking about gt35 size but the have different trims and i dont know how you know wich one would work best for the engine you have is there some formula to know what is the exact right size?

[wolfeman28]

Originally Posted by bulldog11267mad

i was thinking about gt35 size but the have different trims and i dont know how you know wich one would work best for the engine you have is there some formula to know what is the exact right size?

It's not an exact science per say..... You can look at those compressor/turbine graphs all day and it will make you go crazy.

Since you are running two, you don't need to go nuts with the turbine A/R. A .63 or a .82 with the Vband option is what I would go with. The .63 will spool faster, but probably won't push the compressor as well as the .83 would.

As far as compressor, the GT35R is a 56 trim, .70 A/R as a standard... That's what makes it a GT35R

If it were me, I would go with the .63 turbine. If I were running a single turbo, I would run the .83

Have fun with the project, I would love to have the money to do a dual turbo setup!

[bulldog11267mad]

would this be a bad turbo size for the 5.7? T-61 turbo T-6 exhaust flange with a 1.15 a/r

[Lymerock]

cant help you with sizing, but im curious, what do you plan to tune with?

[bulldog11267mad]

i have a stand alone ecu, LINK G4 extreme

[Lymerock]

Originally Posted by bulldog11267mad

i have a stand alone ecu, LINK G4 extreme

not familiar with them, but ill check it out
I look foward to watching your build, please keep us updated.
im a huge fan of turbo fi

[bulldog11267mad]

Would really like help with this size turbo I found a good deal on one and would like to jump on it if it is a good size.

[Rut]

Is your truck currently running with 5.7L in it?

[Beezwax]

just about any v8 will flow enough exhaust to spoon a 1.0 + to full by 3500rpm

remember that you'll want to run catless to open up exhaust and coat your pipes in ceramic to keep the heat... EGT's are very important when running a Turbo setup... you'll want to monitor your A/F with an O2 WB. also remember that going catless you'll find yourself creaping another 2-4psi and since you'll only be running like 10 maybe... that could blow your **** out of this planet!!!

[bulldog11267mad]

I currently have it running just tuning it right now. I have a wide band in it. It has no cat's in the exhaust. I did a whole custom stainless exhaust on it.

[Rut]

Originally Posted by bulldog11267mad

I currently have it running just tuning it right now. I have a wide band in it. It has no cat's in the exhaust. I did a whole custom stainless exhaust on it.

This thread is worthless without pics!!!!!!!!!!!!!!!!!!

[Beezwax]

Originally Posted by Rut

This thread is worthless without pics!!!!!!!!!!!!!!!!!!

I concur!


bulldog11267mad,

video would be even better... I'd LOVE to run a Turbo setup in MY06 DC.... the only "kit" i've seen is the TundraCharger by Motiva Performance.... I think I could get away for less than $5K for a complete setup with FMIC.

If you dont mind me asking... can you provide a breakdown on the cost for this project?

thanks
Beez

[Beezwax]

wait a sec!!!!

you swapped a 5.7L in your 1gen?