[Gmecm] TBI for 455 Olds

[Wade]

Thanks Joe.  I live in zip 37367.  Could we calculate shipping to that zip
please?

Also, does anyone have the setup to take my existing ECM (I have the 7747
from a Truck - 1/2 ton Chevy and 350 engine) reprogrammed to the 454 specs
or to the 455 modified specs someone else referenced?

I'd appreciate it.  My wife is really wanting to have a smoother running
engine in our Olds.

Thanks again to everyone's shared knowledge.

Wade.

-----Original Message-----
From: gmecm-bounces at diy-efi.org [mailto:gmecm-bounces at diy-efi.org] On Behalf
Of Joe Vitek
Sent: Friday, January 25, 2013 4:01 PM
To: gmecm at diy-efi.org
Subject: Re: [Gmecm] TBI for 455 Olds

I have two 80's Olds 7-pin distributors that I could send ya. I really only
need shipping plus a few bucks for gas. Cheap money.

Dang, this is the first time I have posted the list in like 10 years.

Then again, I am a die hard Olds guy... :)

--
joe
1988 Hurst/Olds 455ci. BBO EFI
1978 Olds Salon 350ci. SBO Olskool carb

On 1/25/2013 12:14 PM, Aaron wrote:
> First I should mention, all my experience comes from installation and 
> some light tuning on two KITS sold for the 73-78 GMC Motorhomes.
>
> Howell EFI and Turbo City.
>
> http://howellefi.com/tbi-kit-455-gmc-motorhome-1973-78.html
>
> Turbo City may be out of business.
>
> They used GM part with the GM 7747 ECU. It made finding parts on the 
> road easier than customer EFI.
>
> That Motorhome community is still very strong and active.
>
> http://www.gmcmotorhomes.com/clubs/directory.html
>
> Here is a Tech. webpage from the Eastern States GMC Club. It includes 
> two articles on TBI for the 455 in these motorhomes.
>
> http://www.gmceast.com/technical/
>
> The good news about the distributor is the size. The 455, 403, 350 and
> 307 all used the same distributor shaft dimensions. The only 
> difference that I ever noticed was the cap clocking position. Meaning 
> the HEI cap has a tab that fits into a notch on the aluminum distributor
housing.
> Some Olds had the notch on the passenger side, some on the driver side.
> The housing can be notched to make the cap "clock" to the position 
> that fits your needs. On the Motorhome, the HEI module to coil wires 
> were longer than normal to reach the other clock position. This was 
> the case in both the standard HEI and EST (Electronic Spark Timing)
distributors.
> We would buy rebuilt distributors from Napa or AutoZone or Rock Auto 
> for a mid to late '80's Olds V8 that had the 7 pin module.
>
> The bad news is the Distributor to ECU wiring harness does not come 
> with the rebuilt or new parts. We always searched the junk yards for
those.
> V6 or V8 HEI distributors with the EST system all had the same harness.
>
> Page 131 - 133 on this PDF shows the pictures of what I'm talking about.
> http://www.gmceast.com/technical/Waters_Howell_TBI_Installation.pdf
>
> As mentioned by another post, BEWARE of the Quadrajet to TBI adapter.
> One of the rear bolts in under the IAC passage AND it LEAKS !!!  A LOT 
> !!!! AND I spent way too much damn time looking for it !!!!
>
> Page 47 on this PDF shows the location.
> http://www.gmceast.com/technical/Waters_Howell_TBI_Installation.pdf
>
> As for the code, I think it started as the '89 Chevy C2500 .
>
> But I've can't research it any more now.
>
> Aaron
>
>
>
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>
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