Hey all!

We have a 58 292 2v in a 58 F600 we are adding Holley Sniper EFI 2bbl, a HX35 turbo, and the complete Holley Hyper Spark system to it. Before we bought the Holley kit I did a little googling and read multiple times how the SBF and Y block distributor used the same body, I have found this to be extremely wrong haha.

I'm trying to convert this SBF HyperSpark for use in the 57 292, then put it in my luggage with the turbo kit and EFI and fly out to the truck and install it all, drive it back Oregon to Tennessee.

I found a free mock up engine locally, and it wasn't until I got it home, I realized it was the one year only 54 model...so it's use for distributor mock up might be limited. But that's where I need a little help!

Are the 54 blocks the same as the 57 in reference to the distributor hole in the block and distance from the top of the block to distributor gear pad?

Are all Y block distributors 1.500" in diameter where they go in the block?

Luckily the SBF HyperSpark is billet and has enough meat on it, I plan to turn the bottom of the housing down to 1.375", then make a collar, 1.375" ID and 1.500 OD, and then use a adjustable slip collar to set the gear height. Luckily the shaft portion of the housing is long enough to simply facilitate dropping the distributor body into the block until the gear is sitting on the pad. No shaft drilling or gear relocation required!

My concern is if I use this 54 block to set everything up, that it's different in some dimension than my 57 engine on the other side of the country.

I am familiar with the distributor tooth count difference.

I have found the ID of the tang drive hole in the block is slightly smaller than the OD of the hex drive on the end of the distributor.