[Gmecm] TBI for 455 Olds

[Eck, Joel]

Try this for more info: https://www.google.com/search?q=4-pin-to-7-pin-hei-conversion

Basically, you have three simple and cheap options:

You can convert to an OEM-like Olds HEI with computer control using the internal 7-pin ignition module,
you could extend the pickup coil wires on your existing Olds HEI to connect to a later model, small cap HEI, 8-pin module
or you could use an OEM computer controlled Olds Distributor. This could come from one of the 80+ Cutlasses that came with a Computer controlled Carb on an Olds V8 or one of the 455 RV engines with computer controls.

In fact, here?s one on ebay right now for $18 + shipping. Given the way it looks, I?d clean it up before installing it, but it?s a computer controlled Olds HEI: http://www.ebay.com/itm/Oldsmobile-Distributor-1103602-4J7-/121054705049?pt=Motors_Car_Truck_Parts_Accessories&hash=item1c2f6c3599&vxp=mtr&_uhb=1   (I am not the guy selling it, and I don?t know the guy, so I hope that doesn?t violate any rules of the list. Just trying to help out.)

There are other routes you could take as well, increasing in complexity and cost.

From: gmecm-bounces at diy-efi.org [mailto:gmecm-bounces at diy-efi.org] On Behalf Of Wade
Sent: Thursday, January 24, 2013 17:30
To: gmecm at diy-efi.org
Subject: Re: [Gmecm] TBI for 455 Olds

Exactly right about the scarcity of the 500 Caddy engines.  I have two ? one is completely rebuilt with some performance goodies sitting in our 41 Buick and the other is a core.  Our 455 Olds is in a 1946 Olds custom.

I would like to find out more about which distributor to use for the TBI.  I am looking at the link for converting my current HEI in the OLDs to a distributor that will work for the TBI?

I know that I can do this ? there must be a way.  Short of having a special one built.  The small diameter distributors that the TBI would use for GM has the guts?  I have a number of those lying about.

Thanks to everyone.
From: gmecm-bounces at diy-efi.org [mailto:gmecm-bounces at diy-efi.org] On Behalf Of Aaron
Sent: Thursday, January 24, 2013 5:02 PM
To: gmecm at diy-efi.org
Subject: Re: [Gmecm] TBI for 455 Olds

The 455 Olds are getting harder to find.
The 500 are even harder to find, so those swaps have not been popular for the last 10 years.

From: gmecm-bounces at diy-efi.org<mailto:gmecm-bounces at diy-efi.org> [mailto:gmecm-bounces at diy-efi.org] On Behalf Of alan mays
Sent: Thursday, January 24, 2013 5:27 PM
To: gmecm at diy-efi.org<mailto:gmecm at diy-efi.org>
Subject: Re: [Gmecm] TBI for 455 Olds

76 cadillac 500ci  was the first yr  of a gm EFI system  -but they dont fit a olds 455.
  lots of guys who own the GMC FWD motorhome swap out the 455 for a caddy 500.

--- On Thu, 1/24/13, Wade <wades at mountainmanmotors.com<mailto:wades at mountainmanmotors.com>> wrote:

From: Wade <wades at mountainmanmotors.com<mailto:wades at mountainmanmotors.com>>
Subject: [Gmecm] TBI for 455 Olds
To: Gmecm at diy-efi.org<mailto:Gmecm at diy-efi.org>
Date: Thursday, January 24, 2013, 9:20 AM

Greetings all.  I have a few general questions for the group:



I have a 455 (a 1976 model year engine) and 700R trans (non-electronic speedo gear) installed in a 1946 Olds.



I want to install a TBI setup on this engine and was wondering what kinda Ignition (distributor) could I use ? it has an HEI (stock) on it now?



Also ? I?m thinking about using the computer programming from a 454 ? either an SS model or a pickup. Would I be within performance parameters (I just want a good driver ? no performance camshaft but with an aluminum intake).



And, finally, what would you all suggest as to the fuel pump to use?  I?ve converted other cars over to TBI but have always been able to use the distributor from the donor vehicle.  In the case of my 455 ? there are no donor TBI units that I am aware of.



What are the thoughts about my project?



Thanks.  Wade.



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