TBI Injector Identification
#1
TBI Injector Identification
Pic # 1 - My unmodified drivable 92 RS 305 TBI
Pic # 2 - Unknown - On my new project 92 RS which is supposed to be a TBI 305
The injectors in the 2nd pic appear to have red stems w/ RIN-1000 / 1096 & 1210 on top while the injectors in Pic # 1 seem to be orange and I couldn't see any writing on them...
Any insight?
Pic # 2 - Unknown - On my new project 92 RS which is supposed to be a TBI 305
The injectors in the 2nd pic appear to have red stems w/ RIN-1000 / 1096 & 1210 on top while the injectors in Pic # 1 seem to be orange and I couldn't see any writing on them...
Any insight?
#3
Re: TBI Injector Identification
Yea I kind of figured that, the red ones are what concern me. I can't identify them, and it'a making me wonder if it's the original L03 or if someone has done some kind of swap of the motor, TBI or Injectors on car #2. The Injector Pod I pulled off a 91 S10 had injectors w/ the orange stems too, never seen red...
Last edited by 92RS-HeritageEd; 04-05-2019 at 08:22 PM.
#4
Re: TBI Injector Identification
One thing I know for sure... the red one's don't appear OEM. From what i'm reading in my service manual (I known I should have looked there first) all OEM TBI injectors are stamped with two stamps. Top line should read GM w/ part number and vendor ID number, the second line should read a 4 digit build date code followed by the GM logo.
#5
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Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
Re: TBI Injector Identification
Its not the color of the electrical connectors that matter. Every GM TBI injector that style has orange stems. Its the painted colors in the middle. This was a NOS 300 HP Marine TBI unit. Pink/Purple code high pressure 46 lb/hr injectors.
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Car: 89 Firebird
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Re: TBI Injector Identification
FAST355 I'm glad you chimed in and let me know what to look for. Do you know which color are the 68lbers?
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#8
Re: TBI Injector Identification
Original Poster: @Grumpy
Color code Application Flow rate Part #
Black/White 1-3/8" bore 2bbl, from 2.8l truck ??? GM 5235430 *RPD
Yellow/Blue 4.3L ??? GM 5235203 *RPD
Green/White 5.0L 40 lb/hr GM 5235279 *RPD
Orange/Black 5.7L pickup 55 lb/hr GM 5235206 *RPD
Yellow/Brown 5.7L Cop Car 65 lb/hr ???
Blue/Black Late big block pickup 80 lb/hr GM 1708430 *RPD
Dark Red/Dark Blue big block pickup 90 lb/hr GM 5235231 *RPD
#9
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Car: 1988 Trans Am
Engine: L03
Transmission: 700R4
Axle/Gears: 10 Bolt 2.73 Open
Re: TBI Injector Identification
Thank you sir. You just knew that had to have been covered before.
Wish we could get a copy of that pinned here under TBI.
Wish we could get a copy of that pinned here under TBI.
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