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TBI + Blower?

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Old Nov 16, 2013 | 02:09 PM
  #1  
gregl316's Avatar
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From: pnw near portland or.
Car: 91 RS convertible
Engine: 330 hp vortec 350. TBI
Transmission: 5 Speed
Axle/Gears: 3.73 Moiser 12 bolt/Wilwood disc's
TBI + Blower?

Like the title says is it possible? I want more but I have so much invested in this TBI I hate to throw it out and start over. I was thinking a 471. Will my TBI support it? Or maybe a cyntrifical one.

Yes RBob I don't even have it running perfect yet and I want more. 330hp is cool but I want to smoke the new Camaro and not just the ones with 6cylinders.
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Old Nov 17, 2013 | 12:17 PM
  #2  
1991sleeper's Avatar
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Car: 1991 firebird
Engine: TBI 305 (built)
Transmission: T5
Axle/Gears: 4.10
I'd think a blow through centrifugal procharger Tyler would be best for TBI or a turbo setup ... Check out wynjammer
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Old Nov 17, 2013 | 04:13 PM
  #3  
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Re: TBI + Blower?

I'm reasonably certain one or more of the centrifugal supercharger companies made a kit to blow the TBI pickups.

No idea what was involved in terms of tuning chips, fuel pumps, injector swapping, etc. I could not justify it based on cost ($3K a dozen years ago comes to mind) so I don't remember details.

Later edit:
http://www.tbi-superchargers.com/TBI..._TBI_Kits.html
Web site does not inspire confidence.

ProCharger HO-Intercooled Supercharger System '88-'95 GM Truck/SUV TBI 7.4L w/No Air Pump : Amazon.com : Automotive ProCharger HO-Intercooled Supercharger System '88-'95 GM Truck/SUV TBI 7.4L w/No Air Pump : Amazon.com : Automotive
More in line with the pricing I'd have expected. Woof. $5K.

Last edited by Schurkey; Nov 17, 2013 at 04:24 PM.
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Old Nov 27, 2013 | 03:52 PM
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gregl316's Avatar
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From: pnw near portland or.
Car: 91 RS convertible
Engine: 330 hp vortec 350. TBI
Transmission: 5 Speed
Axle/Gears: 3.73 Moiser 12 bolt/Wilwood disc's
Re: TBI + Blower?

Well from my research it looks like it can't happen. I was thinking that I could just bolt it to the top like a carb.

I have an unrelated question. I have an AFPR in my TBI now set for 21.5/22 pounds. I know an external Vac reference adjustable reg. would work better. I know there's threads out there explaining these but if someone would mind telling me more about them and how to do it that would be great.
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Old Dec 4, 2013 | 04:32 PM
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From: Pennsylvania
Car: '91 Camaro RS
Engine: Carb'd 383
Transmission: Built T5
Axle/Gears: 3.73 Posi
Re: TBI + Blower?

You would need to use a procharger or similar setup. Not a weiand that bolts on as the actual intake.
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Old Dec 5, 2013 | 10:11 AM
  #6  
gregl316's Avatar
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Joined: Aug 2003
Posts: 506
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From: pnw near portland or.
Car: 91 RS convertible
Engine: 330 hp vortec 350. TBI
Transmission: 5 Speed
Axle/Gears: 3.73 Moiser 12 bolt/Wilwood disc's
Re: TBI + Blower?

That's what I was thinking too. A suck through not a blow through. Tell me how to go about doing this. Is it going to scramble the EBL? I am just starting to get the tune rite. With the help of Rbob that is. A little 471 would be nice.
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