mctim64 (1/31/2015)
I'm sure Rob is a good head guy but be carful with the "bigger is better" mentality, Sometimes it's not how much but where and how you cut. There are guys here that have been working with Y heads for decades and know what to do, if your guy is an SBC expert he may or may not do a good job. I think a lot of scruby guys curse Ys because they can't get the end results they want for doing it the scruby way. Just be careful is all I'm saying. BTW all my race engines have done best with the 113 castings (aluminum heads not included) so you are headed in the right direction.
Welcome aboard, babor. I'm glad that my fellow Forum members have been able to influence your thinking regarding the FoMoCo y-block. I see y-blocks as underrated 'sleepers'. Some here will be able to help you more than others because of your intended degree of modification, vehicle application, and intended use. Everything I build is for the street and highway.
Comments:
1) Tim McMaster has attempted to carefully alert you to one of the idiosyncrasies of y-blocks. Porting y-block cylinder heads inappropriately can yield negative results. Of the various original FoMoCo heads made between '54 and '64, your 113 heads are EXCELLENT to be starting with for performance upgrading efforts. Like Tim suggested, applying usual porting methodology to y-block heads can yield negative results. I don't question your porter's expertise, but consider having him do some homework before just 'doing what he usually does' to other cylinder heads to your Ford 113 heads.
2) A bonus of the engine block you have. According to information provided by John Mummert, beginning in (?) April of 1959, FoMoCo increased the dept of the threaded holes in the main bearing cap webbing. This production modification is speculated to have been the result of a frequency of cracks in the webbing of earlier blocks that were finding themselves being rebuilt by Ford or Ford authorized re-manufacturers. Engine blocks with the casting numbers B9AE-6015 F were the first of the different production models through production year 1964 to benefit from this move to slightly longer main cap bolts for 292 EBU main caps and 312 ECZ main caps.
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Some of us rebuilding earlier production series of y-blocks subscribe to drilling and tapping our blocks to this later FoMoCo adopted thread depth for our main bearing caps. All 292 engine main bearing caps take a different length bolt than the 312 engine main bearing caps. John Mummert offers ARP bolts and studs for retrofitting your block with replacement hardware for your ~55 year old block.
3. 5752-113 cylinder heads are 'posted'. These have been reported to have been milled as much as .045 without trouble when rebuilding or modifying. IF you reference the following article on Ted Eaton's web site, it may help you in determining how much you want to mill your 113 heads to accomplish the combustion chamber cc volume you desire.as you plan your build.
See
http://www.eatonbalancing.com/blog/2013/01/30/cylinder-head-milling-for-a-1cc-reduction/4. The brand of cylinder head gaskets that you select for use on y-blocks can also affect the effective combustion chamber volume you're working with in calculating your static compression ratio. The following article on Ted Eaton's web site may help you in knowing how much various manufacturers' available head gaskets add to the effective volume of your cylinder heads combustion chamber's cc volume.
See
http://www.eatonbalancing.com/blog/2012/06/30/head-gasket-volume-calculation/ Best wishes going forward. I hope this helps you to begin digging into what makes this engine well worth your time and effort. I believe that you'll find it a very rewarding build.
NoShortcuts
a.k.a. Charlie Brown
near Syracuse, New York