170-200-250 Distributor

hotrodbob

Well-known member
Is the 170 Distributor the same as a 200? I have a '64 170 and a '68 200. For initial start up of the 200 I want to use the simple points distributor before I rewire and install a Duraspark. Also will the 3.3 ('80) Dura spark distributor fit a '71 250? or 250 point type distributor fit the 200?
 
Check the number on the Dizzy. 64+ dizzys are interchangable from the 170 to the 200/250.

All DS2 ignitions will fit the 200, doesn't matter if from a 250 or 200. Pretty much everything from 64+ is interchangable.

Slade
 
You might want to check the diameter of the shaft that goes into the block. I am pretty sure you are O.K., but there is a year cutoff that they went to a larger shaft. I don't know what year that was.

Bill
 
8) yes, mid 1964. i have a 64 falcon with the original 170, and it has the small shaft dist. granted it is a very early production model. check the shaft diameter first.
 
I have a DII on the shelf so I'll compare that and the point type I took out of the '64 motor.

Thanks for this info guys.
 
The motor is together and I want to install it in my Ranchero before the end of the year. I have a DII and a point type. I want to use the point type on initial start up (fresh motor) then rewire and install the DII after it's been run in and set up. The 250 is already installed in my Maverick and has a poit type dist, but for better performance I thought of putting the DII in it first.
 
Junk-Falcon":btw0rv1h said:
if ya want ta use a bigger shaft dizzy in an older block you can use the latter oil pump and the bigger shaft

8) no you cant. not only is the driveshaft larger, but the dist shaft is also. i know cause i have both. the later dist will not fit the block as the hole for the dist shaft is smaller. the housing should fit fine if you want to swao shafts.
 
The shafts are 490 thou and 530 thou. That gives a radial difference of 0.020, which may barely be noticeable.

The only "risk" is that worn drive gears on the dizzy or cam may suddenly lock due to the reduced mesh.

Adam.
 
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