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Old 08-31-2011, 11:45 AM   #1
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Default LQ9 turbo setup ?'s

I would like some opinion's on what kind of 76mm turbo to go with for my HP goals. I would like to run in the RS275 class. I'm thinking i'm gonna need somewhere around 800-850 rwhp in a 3350 lb. car. Here's my setup i'm going with

02 LQ4 6.0
now has 05 LQ9 pistons & rods
rings & bearings (freshend up)
Katech rod bolts
02 up LS6 cam
317 heads, 5 angle valve job & PRC dual springs
80 lb. injectors
E85

I have a Turbonetics HP76 turbo. I think it's rated to 950hp. It's brand new. Would this work? What head gaskets would yall reccommend? And, LS6 intake or Victor Jr.? I'm not goin with a FAST intake (over my budget). I've heard that the LS6 will have a smoother power curve over the Victor. I've talked to Hellbent before. Maybe he'll chime in. It's pretty much the same setup he used on the GTO I think?
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Old 08-31-2011, 12:22 PM   #2
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I don't think that 80# injectors are going to get you to your goal, I run 160's at 45 psi and am just about 59-60% Duty cycle at 800-850 rwhp. You would have to crank the fuel pressure up to 100+ to get them to work. (I am running E85 also).

I think you'll find that the 76mm turbo will be pretty much tapped out at your goals also.
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Old 08-31-2011, 12:23 PM   #3
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Also, did you make sure and open up the ring gap?
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Old 08-31-2011, 12:36 PM   #4
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Quote:
Originally Posted by mg98ta View Post
I would like some opinion's on what kind of 76mm turbo to go with for my HP goals. I would like to run in the RS275 class. I'm thinking i'm gonna need somewhere around 800-850 rwhp in a 3350 lb. car. Here's my setup i'm going with

02 LQ4 6.0
now has 05 LQ9 pistons & rods
rings & bearings (freshend up)
Katech rod bolts
02 up LS6 cam
317 heads, 5 angle valve job & PRC dual springs
80 lb. injectors
E85

I have a Turbonetics HP76 turbo. I think it's rated to 950hp. It's brand new. Would this work? What head gaskets would yall reccommend? And, LS6 intake or Victor Jr.? I'm not goin with a FAST intake (over my budget). I've heard that the LS6 will have a smoother power curve over the Victor. I've talked to Hellbent before. Maybe he'll chime in. It's pretty much the same setup he used on the GTO I think?
To run in that class you will need a much stouter 76mm unit. Right now the top contenders are the Garrett GT76, BW S400-76 billet...etc.
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Old 08-31-2011, 12:58 PM   #5
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Pte7685

Also get the victor jr. for what you plan on doing. Also another choice is the pte7675, but almost all rs275 and x275 dont allow billet wheel turbo's.
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Old 08-31-2011, 01:08 PM   #6
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I've not got the short block together yet. So yea, i'm gonna open up the ring gap. I was thinking about the BW S400 also. Is there a certain kind of injector that you have ta have ta run E85?
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Old 08-31-2011, 01:08 PM
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