Holley to GM EFI

[Fran and Bud]

Machining the Holley 2bbl throttle body can be avoided by getting a housing
from BDS, Kinsler, or ?? 
that accepts a 4 pin square connector GM IAC (20mm x1.5 thread) on one end
and a 1/4 or 3/8 NPT on the end that connects to the manifold plenum.  Very
easy to drill/tap NPT - not so easy to machine TB to work with the IAC.

The $ to buy the Kinsler parts wouldnt pay for much machine shop time at
flat rate unless you have your own milling machine.   Kinsler P/N 10662
Housing and 10663 Filter. 

Bud
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>From: Vinnie Moscaritolo <vinnie at vmeng.com>
>To: diy_efi <diy_efi at esl.eng.ohio-state.edu>
>Subject: Holley to GM EFI
>Date: Fri, Mar 26, 1999, 10:01 PM
>

>Hi;
>
>I was thinking about converting my Holley EFI TBI unit (the old 
>analog 2bbl) to work with the GM ECU. As I understand this is what 
>Howell does, but they use an idle air control unit instead of the 
>solenoid that Holley uses.
>
>I have a few questions that the list might be able to help with.
>
>Can someone tell about Howells idle air control ?
>Where can I get one to make my Holley (2bbl) compatible?
>Is the GM ECU a good idea?
>
>I am using it on a International Harvester 304 and I have modified a 
>manifold to  accept the TBI unit directly, Although I might mount a 
>1" spacer under the TBI to give it more clearance.  I hear that this 
>is good for low end power, since the IH motor only revs about 4000 
>rpm I think this would be fine. but I would like to know if this is 
>an OK idea?
>
>thanks again.