This system relies on use of the control module of the early HEI system dating back to about 1975. It is popularly called the "four pin module" - may have been used until the mid eighties(?) If you are confronted with a parts counter guy that has to have a "make, model, year, da da da" - tell them you want the module for a 75 Camaro, 350 cid. All of the four pin modules I've seen have the same 4 code letters over the connection tabs.

In the performance catalogs and at the speed shop, there are four pin modules sold as high performance replacements. The Accel module in the photo is just one of many that have the "extended dwell' timing chip. MSD and others sell a new version that supposedly will make sparks clear up to 9000 rpm - and have a built-in, adjustable rev limiter - but they are also $80 and not many Y's spend time doing that sort of crank speed. 

I think its best to use one of the "E-core" style epoxy coils, the Ford TFI type is my favorite because its cheap (and has the neat clip-on connector) - even the perfornance versions are not too pricey due to the popularity of the 80's Mustang 302's. Pay attention to the grounding - the black wire on the module diagram usually goes clear back to the distributor in the Ford wiring scheme - and I add a jumper lead that positively grounds to the intake manifold.

                               Steve Metzger               Tucson, Arizona

You retain the Y mainshaft and gear, the advance mechanism - and swap in the upper rotor shaft that is turned down to fit the reluctor (no point cam). Have to use the later style vacuum can with the dogleg. Look for an upper rotor shaft that has one of its slots labeled "13L" - and use it for the mechanical advance limit

There is an earlier Y distributor - but also post '57 - that uses a different style of upper rotor shaft and centrifugal advance mechanism. These have to visit a machinist to get the cam cut off and the proper fit turned on them for the reluctor. I have a print (PDF file) I can send you with the spec's for this older type unit if you send me a PM with an email address. Once you have this part everything else from the later donor distributor will work OK.

This one has had its slot altered to get a little less total mechanical advance (so you can run more initial advance without "over-advancing" at full travel).

                               Steve Metzger               Tucson, Arizona

http://pages.sbcglobal.net/mshum/HoLun/WIRINGSCHEMATICT-BIRD1.jpg

                               Steve Metzger               Tucson, Arizona