I've heard it is a 292 block and a 312 crank I would like to build one for my 56 bird working on getting all the parts together allmost ready to do it. What would be the best combination to the build best motor
Well, if you grind the 312 mains down to 292 size so it will fit, and then bore out the cylinders to 3.8" (std 312 size), you will have a 312! This may be a cost effective way to build a 312 as 312 blocks are getting scarce, I hear. There are stroker kits to get around 340 cubes, I believe. Check around on the web for "Y-block performance", etc.
Thanks for your post and yes they say the 312 block was ground down for the bigger crank and it would be better to grind the crank instead of the block. Would like a dependable but fast car. I have the original motor for the car want to keep as stock as I can. By building a stroker I can put the whole old engine in a box and save it forever. I just wanted to get feedback on if it's a good idea or not, will it be dependable or leave it alone.
Like I said, I bought another motor so I could pack the old one up... but could build the other one another way. I like the idea of a stroker but not much local info on Y-Blocks.
I have it in my 56 bird have over 8k miles on it. I've been working with it for six years now and notice increase in mpg and lots of power out of it. I would like to hear what others have to say about it.