Found a 56' 1 1/2 ton or 2 ton ford flatbed for free complete with a motor.Was wondering if anybody knows what size Y-Block came in these.Motor is complete and was thinking it would be a good rod motor.Also If it is a 272 can it be made into a 312 very easily?
According to my reference books, Ford trucks in '56 came with the 272. Passenger cars could also be had that year with the 292 and 312. I had a 55 Fairlane 2 dr sedan with the 272, and I had a lot of fun with it. The bore and stroke on the three engines is as follows 272: 3.62 x 3.30 292: 3.75 x 3.30 312: 3.80 x 3.44 According to the Ultimate American V-8 Engine Data Book, the 272, because it was of a thick-wall design, could be safely bored to 3.830, which is .030 in over the 312's stock bore.
A Friend of mine was telling me of a hot setup using a 272 crank in a 312 block. Didn't know if any one knew if this was true or not.
agreed. its worth taking a look at the truck for sure (for free...its a no brainer). some y-blocks came as either "light duty" or "heavy duty", the latter with 4bbl and ram-horns. i'm not sure if y-blocks did in '56 but for my '58 it was an option back then. i say keep it.
To be sure you would need to have the block sonic tested, we did a 272 and found that a couple of cylinders would be questionable going over the 292 piston size, we ran a blower on this one and needed forged pistons so Ross made us a set that was .030 over.
312s had larger main bearing journals than 272-292 blocks, so you'd have to come up with special bearing spacers to do the combination you speak of.
The supposedly hot set up is using the 312 crank in a 292 block since 312 blocks are getting scarcer. They cut down the mains on the 312 crank to 292 size to fit the block.
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