I am looking for points and condenser for a Mallory dual point distributor for a 303 Oldsmobile and a good stock distributor also, cannot find any place that sells parts for the dual point Mallory, and I’m curious if any other G M distributor will fit the 303, any help will be appreciated
My research tells me any Olds distributor from 49 to 55 will work. I’m using one from a 54 Olds in my 1949 303. There are several 49-55 Olds distributors listed on eBay. Fusick has parts and offers a rebuild service.
Most all mallory distributors use the same points. there are tons of new old stock parts available for these on ebay every day....
You also might try Philbin Electric in Portland http://www.philbingroup.com/. He has a lot of good quality distributor parts. His shop is also next to my favorite tavern/body shop.
Mallory wasn't a multi-billion dollar operation that was going to tool up for their own points. Some of their later distributors used '49-53 Ford point sets (or equivalent). I'd start there and also look at other GM products. 25 years ago I had a '48 Seagrave pumper that had a Pierce-Arrow sourced 485 ci V12 with two dual coil dual point distributors (dual ignitions were common n fire engines). It needed points. I read the tag on the distributor and it said "Delco-Remy". A little digging around at the local NAPA yielded four sets of points from '46-'48 Chevrolets that fit perfectly. Original Mallory's are usually available on eBay if you want to pay extra. Also, I have the condensers if you need them. They are reproductions, but superior to the originals. This is an early "Rocket" distributor with a Mallory dual point conversion and one of my condensers.
As for stock distributors, all Olds distributors up to 1964 will fit but '59 up will need the earlier cam gear with the D oil pump drive installed. If your 303 is '49-'50 you will need to make or modify a hold down clamp as well.
Heres one i did for a friend today . Pretty interesting Mallory dual point four lobe cam . Just tie leads together and use NAPA Echlin contacts for 49 ford n. I use a vertex mag condensor set both contacts to .018 and run very good at 7500 24 degrees of advance at 2500...............these old mallorys clean up very well, uses two different drive gears to match oil pump either D drive or hex .........