TBI questions

[Walter Sherwin]

Thanks!  I checked with my parts guy, and 17087021 was used on an 87-89
7.4litre (454) code N engine.  If you wouldn't mind, what are are the GM
numbers engraved on the top flats of the injectors?  They should be visible
without having to remove the injectors from the body.

Walt.


-----Original Message-----
From: Fran and Bud <quest100 at gte.net>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Friday, February 12, 1999 5:42 PM
Subject: Re: TBI questions


>I have one BBC TBI (2") that I believe is pretty early - had the hot water
>heated adapter that opened out to match Q-jet manifold.  The injectors in
it
>are Maroon (Dark Red?) - Lt.(Baby) Blue.
>
>Your parts guy may be able to tell what its original application was from
>the Production Number on the throttle body casting - PN17087021.  I have
>never attempted to find out what it was from.
>
>
>----------
>>From: "Walter Sherwin" <wsherwin at idirect.com>
>>To: <diy_efi at efi332.eng.ohio-state.edu>
>>Subject: Re: TBI questions
>>Date: Sat, Feb 13, 1999, 2:47 AM
>>
>
>>>>From the archives...
>>> GM TBI
>>>There is a color coding on the top of the injector, in the
>>>center of where the electrical connector goes, that does
>>>wear off, but is  the flow rate code?
>>>  Grn/Wht   305 CID eng  about 40 #/hr
>>>  Org/Blk   350 PU       about 55 #/hr
>>>  Yel/Brn   350 Cop Car  about 65 #/hr
>>>  Blu/Blk   Late BBC PU  about 80 #/hr
>>>  EarlyBBC PU  about 90 #/hr
>>>  Purple??
>>
>>
>>
>>
>>Now I am confused.  I have two sets of what are supposed (??) to be 80
#/Hr
>>BBC TBI injectors, in my hand.   One set has blue/black markings, and this
>>number etched into it,   GM17084304RPD.  The other set has orange/black
>>markings, and has this number etched into it,  GM5235206*RPD.
>>
>>Are these the same?  Which one is the 80 BBC injector?  Has my parts guy
>>goofed up?  Anyone got some advice?
>>
>>
>>Thanks;
>>Walt.
>>