tbi plus turbo....... any experiences? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

fluffyfreak · 06-12-2015, 08:50 PM

Pretty much like the title says. Thinking bout boosting a 454 tbi motor, mainly wondering if that style of tbi can keep up with big boost, or if I should go with a aftermarket system.

BR3W CITY · 06-13-2015, 01:41 AM

Its possible but your pretty limited by parts selection. You only have two injectors to work with, so they have to be putting out a significant amount of fuel. The tbi unit itself isn't really designed for pressure either.

Its a bit more common to switch to a blowthrough carb setup, or go with aftermarket efi.

Marv D · 06-13-2015, 03:29 PM

Wondering what kind of ECM you would use in place of the OBD-1,,,hmmmmmmm

That is assuming were talking about the pre 96 TBI motors,,, right?

Super73 · 06-13-2015, 04:07 PM

I have seen a few BBC guys adopt an LS computer using a crank trigger.

BR3W CITY · 06-13-2015, 05:49 PM

Quote:

Originally Posted by Marv D

Wondering what kind of ECM you would use in place of the OBD-1,,,hmmmmmmm

That is assuming were talking about the pre 96 TBI motors,,, right?

I don't think you'd actually HAVE to replace the ECM, can't you still buy those PROM burners like the Camaro guys did back in the day?

I think a company called WynJammer used to do TBI superchargers, so they might be a resource.

You can run pretty much anything off the LS style ECM's, it just involves using a ton of blank PID's.

**Captainfab** · 06-13-2015, 11:07 PM

I don't know about the OEM throttle body, but I do know that the older Holley Pro-jection throttle bodies will handle boost. You can change out the injectors in the Holley for larger injectors.

KQQL IT · 06-14-2015, 10:54 PM

Quote:

Originally Posted by Super73

I have seen a few BBC guys adopt an LS computer using a crank trigger.

Nate says he can, small or big block

BR3W CITY · 06-14-2015, 11:17 PM

It functions in place of the internal reluctor wheel & sensor, but otherwise works pretty much the same.

**Warrens69GMC** · 06-15-2015, 12:26 AM

Quote:

Originally Posted by Marv D

Wondering what kind of ECM you would use in place of the OBD-1,,,hmmmmmmm

That is assuming were talking about the pre 96 TBI motors,,, right?

ECM - easy-peasy. 1991 GMC Syclone

BR3W CITY · 06-15-2015, 02:32 AM

How many of those are floating around?

**Warrens69GMC** · 06-15-2015, 09:37 AM

Quote:

Originally Posted by BR3W CITY

How many of those are floating around?

Go here and I bet you could find one

http://syty.net/

06-12-2015, 08:50 PM	#1
fluffyfreak Registered User Join Date: Jun 2013 Location: albuquerque nm Posts: 204	tbi plus turbo....... any experiences? Pretty much like the title says. Thinking bout boosting a 454 tbi motor, mainly wondering if that style of tbi can keep up with big boost, or if I should go with a aftermarket system.

06-13-2015, 01:41 AM	#2
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: tbi plus turbo....... any experiences? Its possible but your pretty limited by parts selection. You only have two injectors to work with, so they have to be putting out a significant amount of fuel. The tbi unit itself isn't really designed for pressure either. Its a bit more common to switch to a blowthrough carb setup, or go with aftermarket efi. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

06-13-2015, 03:29 PM	#3
Marv D Registered Truck Offender Join Date: May 2008 Location: hells training ground (aka Ariz) Posts: 3,118	Re: tbi plus turbo....... any experiences? Wondering what kind of ECM you would use in place of the OBD-1,,,hmmmmmmm That is assuming were talking about the pre 96 TBI motors,,, right? __________________ Still playin with trucks, even at my age! When you're dead, it's only a problem for the people around you, because you don't know you're dead. .....It's kinda the same when your STUPID. I just did my taxes and reviewed my SS statement. Thanks to the current administration it looks like I will only have to work till noon on the day of my funeral.

06-13-2015, 04:07 PM	#4
Super73 Registered User Join Date: Nov 2007 Location: Bay Area, Ca Posts: 2,841	Re: tbi plus turbo....... any experiences? I have seen a few BBC guys adopt an LS computer using a crank trigger. __________________ ------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49

06-13-2015, 11:07 PM	#6
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,252	Re: tbi plus turbo....... any experiences? I don't know about the OEM throttle body, but I do know that the older Holley Pro-jection throttle bodies will handle boost. You can change out the injectors in the Holley for larger injectors. __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

06-14-2015, 11:17 PM	#8
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: tbi plus turbo....... any experiences? It functions in place of the internal reluctor wheel & sensor, but otherwise works pretty much the same. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

06-15-2015, 02:32 AM	#10
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: tbi plus turbo....... any experiences? How many of those are floating around? __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD



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