is this the right dizzy gear?

billison · Aug 10, 2006

View attachment 449412

the one on the left come out of my car stock, and the one are the right is on my new hei dizzy, the they look the same expect that little black nub on the end of the stock one as seen below, how do i tell if it's the same, i can't see a difference but i'd rather not risk it. thanks "its for a 85 cfi car, i'm doing a swap to carb"
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cfi to carb swap in progress

68torinogt · Aug 10, 2006

maybe itll work but i would make sure it turns the oil pump or itll go BOOM!

billison · Aug 10, 2006

how do i make sure it turns it?

68torinogt · Aug 10, 2006

i dont really know lemme look it up.

68torinogt · Aug 10, 2006

does it come with a oil pump shaft??

billison · Aug 10, 2006

nope, just what it has here, can i buy this part and put it on? and how?

68torinogt · Aug 10, 2006

still trying to pull some stuff up

68torinogt · Aug 10, 2006

whats the part number you may have the wrong one

68torinogt · Aug 10, 2006

i think it is a roller car dist. and you need a pre85 dis.
or visa versa

billison · Aug 10, 2006

i thought the gear it's self was saposed to be differnt, not the shaft, can't i change it?

billison · Aug 10, 2006

even then, could'nt i put a oil pump shaft on?

billison · Aug 10, 2006

can i pull the one off the old dizzy and put it on the new?

68torinogt · Aug 10, 2006

i dont know it didnt look like they were having too good of luck with it on another forum that i found on google.

billison · Aug 10, 2006

with what, what did you search?

68torinogt · Aug 10, 2006

dizzy hei oil shaft

68torinogt · Aug 10, 2006

the problems varied

billison · Aug 10, 2006

ok, how do i get this hear out, or were do i get one so i can install it? thanks

billison · Aug 10, 2006

so the black nub is the oil pump shaft then? cuz autozone sells it for like 3 bucks, and if that's all i need then i'm set, thanks for the help

68torinogt · Aug 10, 2006

i think it is a roll pin it should just press out but did yo see what i was talking about on the other forums?

joeythesaint · Aug 10, 2006

billison,

Can you micrometer or caliper the shafts of those two gears? If they are different, let me know if the larger one went into your block OK. I am having a biznatch of a time putting a wider-shaft, HEI-distributor (modified with a Pertronix and custom advance) into my 1986 block where I previously had a narrower-shaft, pre-HEI (1978) dizzy. The freakin' housings were different sizes, by almost 1/16", enough that the HEI distributor wouldn't even go through the 1.5" hole in the block. I spent a good part of this afternoon turning it on a lathe.

Now it feels like it's bottoming out on the hole where the dizzy shaft goes in to catch the oil pump shaft; at this point I'm wondering if the wider dizzy will even fit.

FWIW, the dizzy on the left might be a 351; my understanding is, they have a longer shaft to accomodate the 351's taller deck height but they will fit most (Ford says "all" ) 302 / 289 / 5.0 blocks.

is this the right dizzy gear?

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