hi all some assistance is required. while going through the pile looking for  a y block dizzy i found one with a shorter shaft and want to know what it may suit . numbers are as follows. it is BOSCH. 9230063803. next.U-TFU8. NEXT    .ARDOOE-12127-C. CAN ANYONE PLEASE HELP??

A search on Google does not find any of these numbers.
It would be best to contact them for info: http://www.bosch-classic.com/en/internet/bosch_classic/ueber/bosch_classic___kontakt/bosch_classic___contact.html


1936 Ford 3W Coupe : 56 T-Bird 312, 47 Packard 3 speed, 40 juice brakes.
1968 Merc Cyclone FB GT 390, Getting a better front clip!
1977 Ford F-250 Supercab RWD Explorer Long box.
1976 Chev Camaro RS LT
Future rebuild : 1949 Ford F-1

This issue was covered in detail in a previous thread.  Some re-builders are using small block Ford (289/302) distributor cores as substitutes for Y-Block distributors. I have seen one so far where the shaft was repinned.  The difference is in the distance from the mounting face of the distributor and the end of the drive gear.  This causes two potential issues. One is with the distributor gear and cam gear alignment.  The other is the short shaft does not allow the distributor gear to bottom out and ride on the block as it's suppose to.  These Frankenstein distributors may work for a time, then fail.

In my opinion, your best bet is to find a known 1957 and up Y-Block distributor and rebuild it yourself.  They are around, but are getting pricey.   I see them on EBay for $150-200.   Brand new distributors are available for big bucks.   Here is a photo I took of a real 1957 Ford Y-Block distributor and an incorrect small block rebuild sold as a Y-Block replacement.  As you can see, the shaft on the left distributor is 1/4" too short.  I purchased the incorrect distributor from Macs a few years ago.

It amazes me that any company would think that swap would work. Obviously they know nothing about the Y-Block distributor/oil pump configuration. Could this problem be solved with a longer oil pump drive if the gear location was changed to the right depth? I wonder how many "wrong" distributors they have sold and how many either failed or took out an engine.



Y's guys rule!
Looking for McCullouch VS57 brackets and parts. Also looking for 28 Chrysler series 72 parts. And early Hemi parts.

MoonShadow, 292 w/McCulloch, 28 Chrysler Roadster, 354 Hemi)
Manchester, New Hampshire

They work until they don't.  The one I bought worked for six months of light driving.  I was in the process of rebuilding my engine when it came up on this forum. With the engine apart, it was easy to see that the drive gear was not resting on the block. It was hovering about 1/4" above the block pad.  This means the distributor case is holding the gear in place instead of the block surface.  How long would it be before it started to wear down the distributor case itself? Probably quite some time.  A friend has one of the distributors with the gear repinned.  This fixes the gear issue, but the distributor shaft is still too short which does not allow the oil pump drive shaft to seat all the way.  Under load this is sure to fail.  The best thing to do is hunt down a genuine Y-Block distributor. 

thanks so much for your info

thank you to all . very helpful cheers

54-56 Distributor





54 Victoria 312;  48 Ford Conv 302, 56 Bird 312
Forever Ford
Midland Park, NJ

Post it in the classifieds for much better visibility.


Lawrenceville, GA

that is a 57 list,early cent advance,the later ones are easy to convert to ford durraspark. have converted several. the one shown can be converted but more work.  the one shown would work fine as long as the later  petrol is used, certainly better than vacuum only,and a must for latter carb conversion on 55/56 aplication