I was searching some info about it with out luck.

Anyone can tell me how it´s made this adaptation?

Best Regards,

Mariano

Generally on this site we do not like to see our y block parts used in other engines because they are getting rare enough for us.  However as I remember the article in HotRod from many years ago the ideal crank to use is the Forged Steel Truck crank.  This is a 292 crank, stroke 3.30" not a cast iron 312 carnk, stroke 3.44".  The main difference is the crank snout which is longer in the Y than the small block. The Flywheel flange may also be different. The main and rod bearings are spaced along the centerline of the crank the same for the Y and the small block which is why this works. 

The most up to date Y block practice is to use 6.25"Scrub (Chev) aftermarket rods on an aftermarket crank for Y's.  This crank was probably developed for small block Fords.  This allows a stroke of upwards of 3.5" or a little more. Y's are limited by cam to rod journal clearance which may not affect the small block so much. Still these type of combinations are getting Y's up to 350+ cubes which is a lot for us. 

As for cost I do not think you would gain much by converting a Y crank when you can probably buy a complete co ordinated package to do it all. 

Look at   Ford-Y-Block.com for more information.  This is John Mummert's web  site and he specializes in Y blocks but has a bunch of other Ford stuff and info on his site.

Maybe you don´t know, the import laws on my conutry makes a bit impossible to obtain many parts from your country. But we have enough Y-blocks to make anything. Meanwhile, small blocks are numbered with the fingers of my hands. I mean we must to do magic to make some power for our engines.

I have 2 Y blocks, a truck 292, 2bbl and an Argie "phase 2" with heads, intake, cam and headers like a small block but it still being a poor truck engine. the most powerfull version of the 292 on my country has some 180 HP. Older Y blocks has about 140 with 6:1 CR.

Well, I have a couple of truck steel cranks to make that perform. I know, this is an Y block site and I love my 292s, but I must to ask here on the best Y block site.

I gonna try with an old-out of size crank and compare it with a SBF crank.

Thanks again for your answer,

Mariano

Here are a couple more ideas,  In USA the best steel crank is the C1TE 292 crank with a stroke of 3.30" The best factory rods are C1TE prefix also they are 6.25" long There are also some rods that are the same pattern that are a little longer but I don't know the number and they are quite rare.  I doubt that these part numbers are the same in Argentina.

I tried to locate the article in the Hot Rod Archives and could not find it, but my guess is that it came out in the  late '60's early 70's.  Maybe some one reading these posts has it and can send you a copy.  I do not recollect if the goal was to increase the stroke to the stock 3.30 or if they stroked it even more. Also I have no opinion about doing this to a cast iron crank.

In your place I would measure both the Y and the SBF crank and transfer the design of the SBF snout and flange to the Y's crank.  As mentioned earlier you may be able to increase stroke even more by offset grinding the throws to a smaller dia like the SBC if you can find suitable rods.

While even SBF's are not really our thing, there are a lot of us that like projects like your so keep us posted.

They may have used the forged Y cranks, but they would have had to de-stroke them to about 2 3/4".  The stock block rules at the time had a limit of 255 cubic inches, and they were starting with 260s.  May have done it to get a forged crank though.  They did use Y rockers on their non-OHC versions though.

A machine shop guy told me that those kind of job are expensive... only an excuse...

I also heard about a mustang pace car of an Indy race that was prep with a sbf with an Y crank. I will search by that side.

Anyway, if I don´t find nothing, I apreciatte your replies.

Thanks again,

Mariano