TBI injectors (just humor)

[Bob Valentine]

A 4.3 TBI looks the same as 305 or 350.   454 looks the same, except 2"
blades and a different style IAC.  2.8 looks like a 4.3/305/350 except tiny
blades.   4100 looks like the rest, except no IAC and little shrouds
(usually) under the injectors.   
There are some variations in throttle linkages.

Did I miss any dual-blade apps?  (I don't know what the MD 366/427 looks like)

The colors on your injectors are probably worn off.    I can send you a pic
of the if you want, email me off-list.

-> Bob Valentine
-> bob at tecmark.com

At 05:57 AM 1/30/2001 -0500, you wrote:
>if I get it right, the only color I see on all of the injectors (both the
>4.3L and 5.0L) is orange, it's like some plastic that cover the two
>"fingers".  Could they be the same, I did saw on Wrenchead.com that
>replacement numbers were the same?  And as far as the color I see, it's the
>same.  And just to make sure I really got them from a 4.3L, cause now I'm
>not too sure anymore, does the 4.3L have the same throttle body with 2
>injectors as the 5.0L?
>
>    Math B
>    fireb76 at videotron.ca
>
>----- Original Message -----
>From: "Bob Valentine" <bob at tecmark.com>
>To: <gmecm at diy-efi.org>
>Sent: Tuesday, January 30, 2001 6:32 PM
>Subject: Re: TBI injectors (just humor)
>
>
>> The colors are on the metal "fingers" that the inj connector latches onto.
>>  They're very often worn off, wiping the grease off them often takes the
>> color with it.  Think of them as the modern equivalent of chalk marks on
>> the frame of an old car....
>>
>> I have two 4.3 TBI's here one from a van, one from a car.  Both have
>> yellow/blue, # 5235203 injectors
>>
>> Here's a repeat from the archives (the older one, gmecm.txt) :
>>
>> 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
>>
>> -> Bob Valentine
>> -> bob at tecmark.com
>>
>> At 12:43 AM 1/30/2001 -0500, you wrote:
>> >ok, even if the message wasn't a answer to a previous question for me. It
>> >still help me a lot, by pure hasard.  I went today to get two tbi
>injectors
>> >cleaned and flow checked at a local hi po shop. The guy called me back
>> >saying that one was defective, since nothing was happening when he
>applied
>> >some voltage.  Could be true because I bought the engine last september,
>and
>> >since it was rebuilt never runned back with the tbi unit.  I then called
>at
>> >GM to get the price for a tbi injector for my 89 caprice 5.0L engine,
>about
>> >140$.  But I got some injectors that came from a kind of early 90's Astro
>> >4.3L. And I tried to figure out if they were the same, over diy www, the
>> >only info are for 5.0L and bigger engines.  And as far for the color
>codes,
>> >the only color I see on the injectors is the pin where the connector hook
>up
>> >and both are orange.  Checked on wrenchead.com and they list both the
>same
>> >part number for the injectors for both cars.  So the question is, should
>the
>> >conclusion be that they're the same injectors? Thanks
>> >
>> >    Math B
>> >    fireb at videotron.ca
>> >
>> >----- Original Message -----
>> >From: "Bob Valentine" <bob at tecmark.com>
>> >To: <gmecm at diy-efi.org>
>> >Sent: Tuesday, January 30, 2001 3:12 AM
>> >Subject: Re: TBI injectors (just humor)
>> >
>> >
>> >> I carry a list of injector #'s & color codes (guess where they are)
>when
>> >> crusing the junkyards, or I'd be better off buying lottery tickets.
>> >> Acutally you might be better off buying lottery tickets instead of
>> >> injectors since I recall you saying something about no profit in EFI.
>> >>
>> >> A 2.5 and a 5.0 injectors are not the same Standard Ignition
>replacement
>> >> part #. Might be a physical difference, might be flow, I don't know.
>Get
>> >> a parts book or go to one of the various Internet online autoparts
>> >> (carparts.com is $$$, but works well for this purpose) and look up
>> >> different year/motor/body combos.  Wrenchhead.com search works great on
>> >> partial part numbers.  It can provide some interesting (but not very
>> >> technical) info, sure is fun for killing time at the day job tho.
>> >>
>> >> -> Bob Valentine
>> >> -> bob at tecmark.com
>> >
>>
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