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Most efficient turbos for large cubes
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GORILLAVETTE
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Joined: 06 May 2009
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Location: Atlanta Georgia
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PostPosted: Wed May 06, 2009 10:57 am    Post subject: Most efficient turbos for large cubes Reply with quote

High folks I am new here. I did a search but could not find what specifically I wanted to know.

I am building a LSX 434 ci motor with LS7X heads with twin turbos. As you can see I have selected two Turbonetics GT-K 650's 66mm's. I know these are a little small for the build but I am looking for the power in the 3.5K range. Right now it's a street car but the day will come when I make it a drag car. What is out on the market that would be very efficient for this cubic inch? I have looked at the BW Bullseye 80's and a few others but I thought I would ask that question on here. Thanks for any information!

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af2
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Joined: 01 Sep 2003
Posts: 5558
Location: grassvalley, ca
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1933 Willys Coupe

PostPosted: Wed May 06, 2009 3:17 pm    Post subject: Re: Most efficient turbos for large cubes Reply with quote

GORILLAVETTE wrote:
High folks I am new here. I did a search but could not find what specifically I wanted to know.
but I am looking for the power in the 3.5K range.


Really????? That picture is yours??????? If it is I apologize!!!
I don't think so.

The first part of the ??? Should have told you we are a stuipid!!!!A bunch that have no clue how to build anything but ERECTION SETS.
HMMMMMMM More coming from S?T getting bitch slapped????? Laughing Laughing Laughing
If not I appologize for Squisher! Embarassed
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GORILLAVETTE
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Joined: 06 May 2009
Posts: 8
Location: Atlanta Georgia
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PostPosted: Wed May 06, 2009 3:29 pm    Post subject: Re: Most efficient turbos for large cubes Reply with quote

af2 wrote:
GORILLAVETTE wrote:
High folks I am new here. I did a search but could not find what specifically I wanted to know.
but I am looking for the power in the 3.5K range.


Really????? That picture is yours??????? If it is I apologize!!!
I don't think so.

The first part of the ??? Should have told you we are a stuipid!!!!A bunch that have no clue how to build anything but ERECTION SETS.
HMMMMMMM More coming from S?T getting bitch slapped????? Laughing Laughing Laughing
If not I appologize for Squisher! Embarassed


I mean power in the 3500RPM to 4000RPM range. Yes that is my set up. The rest of what you said.....I don't have a clue what it means! Rolling Eyes

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10sec.et
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Joined: 29 Mar 2006
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Location: Houston,Texas
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1969 Oldsmobile Cutlass

PostPosted: Wed May 06, 2009 3:39 pm    Post subject: Re: Most efficient turbos for large cubes Reply with quote

GORILLAVETTE wrote:
af2 wrote:
GORILLAVETTE wrote:
High folks I am new here. I did a search but could not find what specifically I wanted to know.
but I am looking for the power in the 3.5K range.


Really????? That picture is yours??????? If it is I apologize!!!
I don't think so.

The first part of the ??? Should have told you we are a stuipid!!!!A bunch that have no clue how to build anything but ERECTION SETS.
HMMMMMMM More coming from S?T getting bitch slapped????? Laughing Laughing Laughing
If not I appologize for Squisher! Embarassed


I mean power in the 3500RPM to 4000RPM range. Yes that is my set up. The rest of what you said.....I don't have a clue what it means! Rolling Eyes


ill take a stab at explaining Adams post........... GORILLAVETTE, you wrote "3.5K range". im guessing you meant RPM and Adam thought you meant $$$$.

i personally have no idea what aftermarket turbos are available. all of my turbo knowledge is consumed with big ass diesel turbos retrofitted to gas engines. im too broke to buy a good one.

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af2 wrote:
It seems we can look at our magical Balls and come up with a fix?

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GORILLAVETTE
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Joined: 06 May 2009
Posts: 8
Location: Atlanta Georgia
356.86 points



PostPosted: Wed May 06, 2009 3:45 pm    Post subject: Re: Most efficient turbos for large cubes Reply with quote

10sec.et wrote:
GORILLAVETTE wrote:
af2 wrote:
GORILLAVETTE wrote:
High folks I am new here. I did a search but could not find what specifically I wanted to know.
but I am looking for the power in the 3.5K range.


Really????? That picture is yours??????? If it is I apologize!!!
I don't think so.

The first part of the ??? Should have told you we are a stuipid!!!!A bunch that have no clue how to build anything but ERECTION SETS.
HMMMMMMM More coming from S?T getting bitch slapped????? Laughing Laughing Laughing
If not I appologize for Squisher! Embarassed


I mean power in the 3500RPM to 4000RPM range. Yes that is my set up. The rest of what you said.....I don't have a clue what it means! Rolling Eyes


ill take a stab at explaining Adams post........... GORILLAVETTE, you wrote "3.5K range". im guessing you meant RPM and Adam thought you meant $$$$.

i personally have no idea what aftermarket turbos are available. all of my turbo knowledge is consumed with big ass diesel turbos retrofitted to gas engines. im too broke to buy a good one.



I guess I was not real clear. Looks like this may not be the best site to ask that question. Hope some other folks "chime" in. Thanks...

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af2
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1933 Willys Coupe

PostPosted: Wed May 06, 2009 4:00 pm    Post subject: Reply with quote

As I said eirlier(not your'es) That is I thought 3.5K as meaning HP??? Ok I will sit this one out!
Embarassed
By the way welcome to Smokem!!!!!
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robins44
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PostPosted: Thu May 07, 2009 12:09 pm    Post subject: Reply with quote

geese ya scared him away Razz
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GORILLAVETTE
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Location: Atlanta Georgia
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PostPosted: Thu May 07, 2009 1:08 pm    Post subject: Reply with quote

robins44 wrote:
geese ya scared him away Razz




Me no skeered! Just not getting much in the way of info from you dudes! Wink

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SMOKEmUP
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PostPosted: Fri May 08, 2009 12:20 am    Post subject: Reply with quote

Why do you want to optimize at 3500 rpm?

I figure with that motor you'll have a hard time hooking it up normally aspirated, never mind with twin turbo's.

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Knarley Darley
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PostPosted: Fri May 08, 2009 2:37 am    Post subject: Reply with quote

You will be a lot happier with the smaller twins, than with the 80MMs. The engine will spool the smaller turbos way faster than the bigger ones, and be better mannered on the street, and make insane power. The bigger turbos may be OK for a drag only car, but you are going to have to melt the convertor to spool them. Even the 66mms are pretty big for the street IMO, but you have enough cubes to drive through the lag. That thing is going to be...... well NARLEY. Welcome to smokemup. BTW what year is your Vette?
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GORILLAVETTE
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Location: Atlanta Georgia
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PostPosted: Fri May 08, 2009 9:41 am    Post subject: Reply with quote

SMOKEmUP wrote:
Why do you want to optimize at 3500 rpm?

I figure with that motor you'll have a hard time hooking it up normally aspirated, never mind with twin turbo's.



Not optimize but start really getting into the power zone. If I go bigger will start in the 5000RPM range. Problem with smaller ones is.......pop out about 6200RPM.

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GORILLAVETTE
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PostPosted: Fri May 08, 2009 9:43 am    Post subject: Reply with quote

Knarley Darley wrote:
You will be a lot happier with the smaller twins, than with the 80MMs. The engine will spool the smaller turbos way faster than the bigger ones, and be better mannered on the street, and make insane power. The bigger turbos may be OK for a drag only car, but you are going to have to melt the convertor to spool them. Even the 66mms are pretty big for the street IMO, but you have enough cubes to drive through the lag. That thing is going to be...... well NARLEY. Welcome to smokemup. BTW what year is your Vette?



Mostly a street machine. I have just about decided to start with the 66's and if I am not happy go to a T76. I do like to get into the power range in the 3500RPM level and not wait untill 5000RPM. Thanks...happy to be here!

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GORILLAVETTE
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PostPosted: Fri May 08, 2009 9:46 am    Post subject: Reply with quote

SMOKEmUP wrote:
Why do you want to optimize at 3500 rpm?

I figure with that motor you'll have a hard time hooking it up normally aspirated, never mind with twin turbo's.


Oh I will hook up....running these out back! MT 345/35/18's.



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Knarley Darley
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PostPosted: Sat May 09, 2009 11:42 pm    Post subject: Reply with quote

You might need wheelie bars. LOL
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GORILLAVETTE
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Location: Atlanta Georgia
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PostPosted: Sun May 10, 2009 2:42 pm    Post subject: Reply with quote

Knarley Darley wrote:
You might need wheelie bars. LOL



Lord I hope not.....the local cops really frown on that around here! Laughing

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