1990 twin turbo camaro 305 tbi
Senior Member
Joined: Mar 2008
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From: Harrisburg PA
Car: 04 Jetta
Engine: 1.8t AWP
Transmission: 5spd
Re: 1990 twin turbo camaro 305 tbi
stock internals on a tbi 305 with 10 lbs from each turbo???? yea i want some pics too be carefull dont hit full boost hahah U sure its stock??yea like the guy above said everything hahah
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Joined: Nov 2008
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From: Troutman NC
Car: 1992 Camaro RS
Engine: 305
Transmission: 700R4
Axle/Gears: 2.73
Re: 1990 twin turbo camaro 305 tbi
lol a new motor... With that much boost I would say the bottom end probably wouldn't last that long. You got any pics and details of your setup?
Re: 1990 twin turbo camaro 305 tbi
twin turbo intercooler 2in 1 out ( 33x12x3.5 oversall size ) (core size 23x7x3.5)
twin turbo stainless steel chevy s.b turbo manifold (42mm tubing 2.9mm wall thickness)
T3/T4 50 A/R Compressor, .63A/R Turbine
450HP Capable
T3 Flange to Manifold
5 Bolt Downpipe Flange
Oil Lube/Cool
3" Inlet Diameter & 2" Outlet Diameter
38mm external waste gates
twin bov
i still have my a/c and power steering i will get some pics up soon
twin turbo stainless steel chevy s.b turbo manifold (42mm tubing 2.9mm wall thickness)
T3/T4 50 A/R Compressor, .63A/R Turbine
450HP Capable
T3 Flange to Manifold
5 Bolt Downpipe Flange
Oil Lube/Cool
3" Inlet Diameter & 2" Outlet Diameter
38mm external waste gates
twin bov
i still have my a/c and power steering i will get some pics up soon
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From: Houston TX
Car: 02 SS
Engine: 408 TT (1108rw-93/m1)6700rpm
Transmission: TH400(slipping)
Axle/Gears: 12bolt/3.42(whines😠)
Re: 1990 twin turbo camaro 305 tbi
sounds like an ebay description.lol
pix or ban
pix or ban
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From: garage
Engine: 3xx ci tubo
Transmission: 4L60E & 4L80E
Re: 1990 twin turbo camaro 305 tbi
sure they are turbonetics?
That manifold is the classic EBay Bull-S manifold description with 42mm, 2.9mm wall. The wall is actual 18 gauge or 16 gauge which is 1.5mm. The manifold they probably copied was a quality unit with 2.9mm wall, but China makes theirs out of 1.5mm wall.
That manifold is the classic EBay Bull-S manifold description with 42mm, 2.9mm wall. The wall is actual 18 gauge or 16 gauge which is 1.5mm. The manifold they probably copied was a quality unit with 2.9mm wall, but China makes theirs out of 1.5mm wall.
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Joined: Jul 2007
Posts: 1,305
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From: Corner Brook, NL
Car: 1984 Z28 HT,2006 2500HD
Engine: 5.7L, 6.6Llbz dmax
Transmission: 700R4, 6 speed allison
Axle/Gears: worn out 3.73 posi
Re: 1990 twin turbo camaro 305 tbi
you related to runfan1600 by any chance?
Last edited by Brennan; Mar 4, 2009 at 07:16 PM.
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From: North Central Indiana
Car: 86 IROC
Engine: 383
Transmission: TKO 600
Axle/Gears: 3.54 Dana 44 IRS
Re: 1990 twin turbo camaro 305 tbi
1990camaroredRS, I'm sure this is not the attention you want. Post pics or facts to show us you are serious and have a clue what you're doing, or you'll continue to be badgered.
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From: M.D
Car: 1987 Camaro
Engine: 350 hsr
Transmission: 700R4(blown)
Axle/Gears: 3:73
Re: 1990 twin turbo camaro 305 tbi
I got this huge chevy sticker that i slapped on . It added like 120 hp to the rear wheels!!!! then added alot of apc racing stickers wich added only 51hp. but the best part is when i added the supercool headlight fluid tubro charger man it made my lights bright.....(joke if no one could tell)
all in all i dont belive till i see some proof
all in all i dont belive till i see some proof
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iTrader: (1)
Joined: Sep 2003
Posts: 455
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Car: 1988 firebird trans am GTA
Engine: 5.7L w/hsr
Transmission: 700r4
Axle/Gears: posi 3.23
Re: 1990 twin turbo camaro 305 tbi
look out for little pieces of your engine making a nice tinkling noise on the road as you grind to a stop. 10 psi is above the safe limit for a stock bottom end of either a 305 0r 350. you are either full of crap or misunderstanding the max boost your system is running. if its something you want to do to your car, don't lie about it. the people here are mighty helpfull if you don't bullsh*t them... but if you do its flame on.
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From: Classified
Car: '92 Z28 Convertible
Engine: 305ci TPI
Transmission: 700R4 shifted
Axle/Gears: 2.73 (for now)
Re: 1990 twin turbo camaro 305 tbi
I got this huge chevy sticker that i slapped on . It added like 120 hp to the rear wheels!!!! then added alot of apc racing stickers wich added only 51hp. but the best part is when i added the supercool headlight fluid tubro charger man it made my lights bright.....(joke if no one could tell)
all in all i dont belive till i see some proof
all in all i dont belive till i see some proof



That is SICK! Where can I get one of those?!?!
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Joined: Feb 2009
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From: central Louisiana
Car: 88 Firebird T-Top
Engine: 350 crate
Transmission: 700r4 w/shift kit
Axle/Gears: one's that move the car
Re: 1990 twin turbo camaro 305 tbi
I got this huge chevy sticker that i slapped on . It added like 120 hp to the rear wheels!!!! then added alot of apc racing stickers wich added only 51hp. but the best part is when i added the supercool headlight fluid tubro charger man it made my lights bright.....(joke if no one could tell)
all in all i dont belive till i see some proof
all in all i dont belive till i see some proof
so if i get a blown alcohol sticker put on my car what hp would i get out of that..remeber its a 2.8.stock hp around 146..would that plus your stickers give me 400 hp




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Joined: Jul 2007
Posts: 1,305
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From: Corner Brook, NL
Car: 1984 Z28 HT,2006 2500HD
Engine: 5.7L, 6.6Llbz dmax
Transmission: 700R4, 6 speed allison
Axle/Gears: worn out 3.73 posi
Re: 1990 twin turbo camaro 305 tbi
since we are on the topic of power adders how much hp can i get from fuzzy dice, plastic handcuffs, $2 bling, etc. hangin from my rearview mirror? im thinkin 2-300 at the crank?
Re: 1990 twin turbo camaro 305 tbi
twin turbo intercooler 2in 1 out ( 33x12x3.5 oversall size ) (core size 23x7x3.5)
twin turbo stainless steel chevy s.b turbo manifold (42mm tubing 2.9mm wall thickness)
T3/T4 50 A/R Compressor, .63A/R Turbine
450HP Capable
T3 Flange to Manifold
5 Bolt Downpipe Flange
Oil Lube/Cool
3" Inlet Diameter & 2" Outlet Diameter
38mm external waste gates
twin bov
i still have my a/c and power steering i will get some pics up soon
twin turbo stainless steel chevy s.b turbo manifold (42mm tubing 2.9mm wall thickness)
T3/T4 50 A/R Compressor, .63A/R Turbine
450HP Capable
T3 Flange to Manifold
5 Bolt Downpipe Flange
Oil Lube/Cool
3" Inlet Diameter & 2" Outlet Diameter
38mm external waste gates
twin bov
i still have my a/c and power steering i will get some pics up soon

I have that with heads, cam, and mini ram
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From: garage
Engine: 3xx ci tubo
Transmission: 4L60E & 4L80E
Re: 1990 twin turbo camaro 305 tbi
That is 450HP per turbo.
What do you get for cruise MPG with the 450HP N/A engine? Probably 1/2 of what a 450HP turbo engine (stock cam, heads, intake) would get. Not to mention the turbo engine having a smooth idle and stock sounding exhaust (if that sound is desired).
A new mini ram costs a little less than turbo setup to make 450HP.
Re: 1990 twin turbo camaro 305 tbi
This thread attracts all kinds.
That is 450HP per turbo.
What do you get for cruise MPG with the 450HP N/A engine? Probably 1/2 of what a 450HP turbo engine (stock cam, heads, intake) would get. Not to mention the turbo engine having a smooth idle and stock sounding exhaust (if that sound is desired).
A new mini ram costs a little less than turbo setup to make 450HP.
That is 450HP per turbo.
What do you get for cruise MPG with the 450HP N/A engine? Probably 1/2 of what a 450HP turbo engine (stock cam, heads, intake) would get. Not to mention the turbo engine having a smooth idle and stock sounding exhaust (if that sound is desired).
A new mini ram costs a little less than turbo setup to make 450HP.
I get about 18mpg
I dont want a smooth idle
the ease of install more than makes up for the price when compared to an ebay turbo kit
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Joined: Jun 2006
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From: Park Forest
Car: 89 Iroc-Z28
Engine: 454 BBC
Transmission: TH400
Axle/Gears: 10 bolt 2:73 Posi
Re: 1990 twin turbo camaro 305 tbi
The 10 lbs of boost that he says he's running is only 10 lbs not 20 lbs. In other words the boost from twin turbos is not cumulative, meaning the 10lbs from turbo 1 plus the 10 lbs from turbo 2 doesn't equal 20 lbs of boost. The airflow does however double at the same 10 lbs of boost.
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From: Glen Park, NY
Car: 1987 IROC-Z
Engine: TPIS II Supercharged w/Nitrous
Transmission: 700R4 Probuilt
Axle/Gears: 3:73 Richmond 12 Bolt
Re: 1990 twin turbo camaro 305 tbi
All you people think you have real horse power from adding stickers and fuzzy dice.. I have the real horse power now because I mounted my subwoofers to my rear bumper and I play Sammy Hagar ,"I can't drive 55" really lound and it is like a JATO pack now. That was worth almost 2500hp doing that.. LOL
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From: M.D
Car: 1987 Camaro
Engine: 350 hsr
Transmission: 700R4(blown)
Axle/Gears: 3:73
Re: 1990 twin turbo camaro 305 tbi
All you people think you have real horse power from adding stickers and fuzzy dice.. I have the real horse power now because I mounted my subwoofers to my rear bumper and I play Sammy Hagar ,"I can't drive 55" really lound and it is like a JATO pack now. That was worth almost 2500hp doing that.. LOL
Supreme Member
Joined: Mar 2005
Posts: 1,665
Likes: 3
From: Benzie, MI
Car: 91 rs
Engine: Blow through 383, 10 psi, xr288hr
Transmission: Manual th350 ATI 3000
Axle/Gears: 3.50 9"
Re: 1990 twin turbo camaro 305 tbi
Wow, what a bunch of d-bags. This newb asked a decent question and hardly anybody really answered him. WTF, is this how we treat newcomers?
First of all, do NOT NOT NOT rev your engine past 5500 rpms.
Here is what you need to watch out for-
The first thing you should do, the next time you take it out, is to do a wide open throttle run, throw it in neutral, and shut off the motor. Then pull a few spark plugs and read them. Post pictures of them if you would like some analysis.
Your tune is EXTREMELY important. Make sure you are not running any leaner than 12.5:1. A wideband O2 sensor kit like the Innovate motorsports LM-1 would be VERY helpful.
I understand why people are doubtful of your setup. Turbo TBI? I can't recall ever seeing one, but its not impossible. Pictures would be fantastic!
I ran 16 psi on a stock 305 with a poor tune.
First of all, do NOT NOT NOT rev your engine past 5500 rpms.
Here is what you need to watch out for-
The first thing you should do, the next time you take it out, is to do a wide open throttle run, throw it in neutral, and shut off the motor. Then pull a few spark plugs and read them. Post pictures of them if you would like some analysis.
Your tune is EXTREMELY important. Make sure you are not running any leaner than 12.5:1. A wideband O2 sensor kit like the Innovate motorsports LM-1 would be VERY helpful.
I understand why people are doubtful of your setup. Turbo TBI? I can't recall ever seeing one, but its not impossible. Pictures would be fantastic!
I ran 16 psi on a stock 305 with a poor tune.
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From: Glen Park, NY
Car: 1987 IROC-Z
Engine: TPIS II Supercharged w/Nitrous
Transmission: 700R4 Probuilt
Axle/Gears: 3:73 Richmond 12 Bolt
Re: 1990 twin turbo camaro 305 tbi
If you want a real answer to your question is watch your bottom end because you will be shredding it with stock internals. What we are asking isn't a hard request either, we would just like to see some pics of your project.
Re: 1990 twin turbo camaro 305 tbi
I would love to see pictures, i have a 92 rs and have been thinking about this setup. maybe not 10 psi to each turbo i was think bout 6 or 7. Please post pictures
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From: Glen Park, NY
Car: 1987 IROC-Z
Engine: TPIS II Supercharged w/Nitrous
Transmission: 700R4 Probuilt
Axle/Gears: 3:73 Richmond 12 Bolt
Re: 1990 twin turbo camaro 305 tbi
Hmmm!!!! This comes from someone who gets a 2nd post to thirdgen.org!! If you read the real question is putting tt on a stock 305.. If someone here asks a question we attempt to answer it. No matter how small.. Instead of shooting your mouth off, Help out.
Re: 1990 twin turbo camaro 305 tbi
HOW CAN I GET THE MOST POWER OUT MY 305 TPI.I DNT WONT A 350 MOTOR,WNT TO KEEP IT ALL O.G. JUST TRYN TO GET THE MOST OUT IT.ALSO WHATS THE BIGGEST CAM I CAN PUT IN WITHOUT CHANGEN THE STALL/COMPUTER UP GRADES.ALSO SHOULD I CHANGE THE REAR GEARS TOO.,NEED HELP
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92camaroJoe
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Aug 13, 2015 06:07 AM




Lets see some pics

