Need New Turbos... Help me Decide!
 

So after knowing that my T3/T4 57mm turbos are dying, I decided to get new turbos. I have the HP Performance Twin Turbo kit and a 402 LS2 that I'm temporarily using. I'm planning to get a new motor later but in the mean time I will be using this motor to get everything up and running. I think I will be stuck with those 2.5" downpipes since I haven't seen anybody offering 3" downpipes on the HP Performance kit.

I have a goal of 1200 RWHP as a minimum and that should be with 91 pump gas, straight meth and race gas.

How would you think I can reach up to my goal easily?

2.5" downpipes, 91 oct and 1200 whp?....

Not going to happen. I made 1250 @20PSI and 1437 on ~28PSI and that is with twin 76mm.

Impossible?

I'm already pushing 746 RWHP on this 402 with 91 pump gas and meth on those 57mm turbos and ~11* of timing.. I think 1200 is doable with the right turbos and right motor, don't you think?

Come on Nick. What if I get 76's? I'm seriously thinking about them after looking at Bam Bam :thumbs:

Yeah gotta make 3" dp. I gotta be honest I've never driven car in kill mode. Last outing at Etown was a waste..track would even hold off gates. I understand that not every track event won't be ideal especially when its just a little ole rental. For that Etown event id rather have a h/c and get more seat time/practice. Going into my build it was based around killer highway ride. When you build keep your goals in mind.

Not on 91 unless the motor is huge.

Obviously with an entirely different setup you can make your goal lol. Not with what you're working with.

I made 1073rwhp @ 18psi with twin 62mm

If you are looking for something that is a step up and a direct bolt on, what about a pair of Turbonetics t3/t4s with the 60-1 compressor and the F1-62 turbine? Or a Comp CT3 series like a 6262 or 6765? Let me know, would love to get you set-up!

Now you are talking Faisal! 1200rwhp will be nice :D
prepare a new motor, clutch, fuel system, etc

How about you stay at 1000rwhp and let us have a close race lol
good luck buddy

With our crappy fuel and Weather 1200rwhp Is not going to happen But 1000-1050 is possible with the right turbos + engine 16-18psi
For 1200rwhp on 91+meth it must be 427+ci with 76+ turbos 18-20psi and IMO the car will be a ticking bomb with our fuel..

Well said :thumbs:

LOL and change the car while I'm at it :p

Awesome numbers man! Sounds very fun to drive :rock:

Thanks !

Of course a 900whp GTR will be faster than any Vette
:D

Moe, I will race you now with no turbos :D

Deal?

Sam baby you can't imagine how meth is improving the fuel. It is really fun to have and gives a lot of room to play when tuning the car.

Watch me hit that 1200 on your dyno with our crappy fuel :rock:

Ha Ha

I swear I wish to see your black Beast making 1400rwhp on pump + meth :D and I know how much Meth can help with tune I've seen it on lots of cars but you're talking 1200rwhp !!!
LMR made thise numbers on 18psi 440ci and Billet 82mm turbos and 93 octane not our 88octane :lol: :lol:
I hope with my new GT55-94 single turbo I can 1400rwhp on kill mode
And 900rwhp on 13-14psi straight pump gas :hide:

Maybe the question is 4-bolt or 6-bolt heads?

What's the most you guys have made on 4-bolters? Where does he need to ensure the heads are 6-bolt?

I'm really happy to hear that the yellow Sleeper is waking up soon :rock:

Will be looking forward to smoke the $hit out of you :D