[Gmecm] '747 and multi=port

[Dave]

Yes. Check out their online catalog. Edelbrock provides a new PROM. I 
had to toss it since the PROM did not accommodate the increased stroke 
(383 vs. 350) or different cam. Easy to install (I had the engine out on 
a stand). Very good performance. Still tweaking, this is my first 
modified EFI.

David Haggard wrote:

>Thanks.
>Did that setup come from Edelbrock? I mean, connecting the injectors to the '747?
>
>David 
>
>  
>
>>-----Original Message-----
>>From: gmecm-bounces at diy-efi.org 
>>[mailto:gmecm-bounces at diy-efi.org] On Behalf Of Dave Harvey
>>Sent: Friday, April 08, 2005 12:43 AM
>>To: gmecm at diy-efi.org
>>Subject: Re: [Gmecm] '747 and multi=port
>>
>>David,
>>My 91 GMC pickup was originally TBI w/ 1227747. I installed 
>>an Edelbrock multi-port injection sytem on top of an HT383 
>>engine. The Edelbrock uses the '747 to bank-fire the 
>>injectors. I'm 99% sure the injectors are wired in parallel 
>>in 2 groups of 4. Pretty slick setup.
>>
>>-- Dave
>>
>>David Haggard wrote:
>>
>>    
>>
>>>I seem to recall reading in past documents and messages 
>>>      
>>>
>>that a 1227747 
>>    
>>
>>>can run multi-port injection in bank-fire mode.
>>>
>>> 
>>>
>>>Is this true? If so, should each bank of injectors be wired 
>>>      
>>>
>>in series, 
>>    
>>
>>>or parallel? (I once had a dual 2-bbl TBI setup on a crossfire, and 
>>>those injectors had to be wired in series. They would not 
>>>      
>>>
>>fire at all 
>>    
>>
>>>in parallel.)
>>>
>>> 
>>>
>>>David Haggard
>>>
>>>   '88 Formula Firebird "SR-71 Black 'Bird"
>>>
>>> 
>>>
>>>
>>>      
>>>
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>>    
>>
>
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>
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