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Dan, My Parts Book lists 3 different distributors for 57 D500, depending on engine S/N. The AutoLite IBK-4301A is the early version and is the same as the 56 D500. For vacuum advance diaphragm 1439671, after market replacements are: AutoLite 6-15 or IAZ-2023 RA (AutoLite is the OEM) Shurhit (Borg Warner) V-118 Vulcan V-205 Ignition Parts VC55 Remy A-1312 You will need to remove the end cap from your old diaphragm and transfer the spring, shims, gasket, and end cap to the new one. Your vacuum advance has 23 degrees of engine advance. Make sure you get the right version, since these Mopars had a range from 8 to 30 degrees. Too little and your engine will be retarded at cruise. Too much and you will be over-advanced, resulting in engine damage. Verify you have the correct unit by reading the number stamped on the arm. These numbers are in distributor degrees, which is half the engine degrees. For yours, the number should be 11.5. Most vendors only look up the application by year. They will tell you it fits 57 Dodge V8. But typically not whether that is a Poly 2 bbl or 4 bbl, or one of 3 D500 distributors. If in doubt, ask them for the number on the arm. Dave Homstad 56 Dodge D500 ----------------------------------------- From: "Daniel Davids"To: Cc: Sent: Sat, 5 Sep 2015 03:46:22 -0700 Subject: Re: [FWDLK] Needed: 57 Dual Point Distributor Vacuum Advance
Hi, Dave.
1642392 (aka Autolite IBK-4301A)
Examination of my distributor label shows it to be exactly this distributor.
The part number for the vacuum advance (called a "vacuum chamber" in the parts manual) is 1439671.
I would very much like to learn the aftermarket replacement numbers for this vacuum advance.
Thanks for your help with that.
- Dan
On Sep 4, 2015, at 11:43 PM, Dave Homstad <dhomstad@xxxxxxxxxxx> wrote:
Daniel,
There are multiple distributor P/Ns used in 57 Dodge D500s. If you send me the AutoLite P/N on the distributor label, I can tell you which advance unit is correct and several of the aftermarket numbers. The best place to find these is eBay. If you are interested in rebuilding, lubricating, or modifying your distributor for performance, review my web page at: http://webpages.charter.net/dhomstad/Distributor%20Frame1Source1.htm Dave Homstad 56 Dodge D500 ----------------------------------------- From: "Daniel Davids"To: Cc: Sent: Fri, 4 Sep 2015 02:07:42 -0700 Subject: [FWDLK] Needed: 57 Dual Point Distributor Vacuum Advance We went through the ignition system on my D500 CRL and discovered the distributor vacuum advance unit is inop. I need to find a replacement. Apparently, it’s different than the one used on the single-point distributors. Where can I find one? I believe the correct Mopar p/n is 1439671. I have no idea what the aftermarket versions were numbered. - Dan ************************************************************* To unsubscribe or set your subscription options, please go to http://lists.psu.edu/cgi-bin/wa?SUBED1=l-forwardlook&A=1 Help the Forward Look with every eBay purchase by starting your search here: http://www.ForwardLook.net/eBay Help the Forward Look with every Amazon purchase by clicking here: http://www.ForwardLook.net/Amazon @seanet.com> ************************************************************* To unsubscribe or set your subscription options, please go to Help The Forward Look with every Amazon purchase by clicking here! ************************************************************* To unsubscribe or set your subscription options,
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