I was wondering if the 4.3 stroke is capable of producing the 557ci BBF. Or is there a bigger stroke crank capable of fitting into a stock 460 block. From what I understand to gain 557 ci you have to have the 4.3 and have the block .080 over. Is this correct?

 

A 4.3 crank will give you 532 ci. You need a 4.5 to get 557 ci. Here is a good read on a stroker build.

http://misn.com/~frd460/specialtools.html

 

Thanks for the info but I could not get it to download, any other build stories that dont need special programs to read?

 

Well you can build more than 432cid with a 4.3" stroke crank but it requires the use of an aftermarket block like the IDT, or FRPP A460 blocks. But luckily the 4.5" stroke cranks are almost as plentiful as the 4.3. some really like sticking wtih the 6.8" rods but on the 4.5" stroke I prefer (as do many others) the 6.7" rod to help keep the pin out of the ring pack. All of the parts are readily available from several different manufactors as off the shelf parts, unless of coarse you want some crazy domes or to change the deck hieght or some other such things, but even then they don't take long for custom pistons.
If you want to go 557cid that requires boring the block .080, and I would have it sonic checked first, many blocks will go to that but every single one will have atleast one non thrust wall that will be thin to some degree. This can be solved by either offset boring it, or sleeving the one cyl, or looking for a different block. Don't bother looking for a particular year block for the bore diameters they are all about the same by a test we did a couple years ago where we sonic tested 36 blocks in one day of all different lineages and from different foundries and found that no one block was any better than any other. But on a stroker situation the D9TE blocks do make a good choice due to the approx 3/16" longer cyl wall which better supports the piston at BDC.

 

So is the wrist pin coming down out of the cylinder wall a big concern if you go with the 4.5??? You went with the 4.3 correct, any reason you didnt go with the 4.5??

 

it's not a big concern but the piston skirt does drop below the bottom of the cylinder so the extra length is an advantage. Reason why I went with the 4.3" stroke I got a good deal on a 4.3" crank. My new engine will be a 4.5" stroke 4.5" bore and the heck with the price. But then again it won't have a cast or even forged crank in it either.

 

Building a new engine huh...sweet. Wanna do a little horse tradin for the old engine...maybe engine parts, ford pickups and or parts, drivetrain parts, trailers, fence posts, chickens...goats? LOL