Engine is pulled - 273 rebuild or replacement 360 crate?

brodphish said

First the car…..1965 Barracuda

09 30 65 build date
Block casting 11 5 1965
Assembly stamp on block B273 11 19
It has the 1965 heads with the narrow bolt angle

Does this make sense for an original block? Or is it a 1966 block due the B stamp and late casting and assembly date?

The engine was pulled yesterday. We’ve found:

2 bbl pistons (same as fender tag; currently running a Qjet with an Offy 360 intake)

Already .060 over, bores need to be honed. Are .080 pistons available?

View attachment 1716478644

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360 over the 273.

You could be an oddball and use the 273 heads with bigger valves on the intake side and some Port work. It'll be a stump puller off the line and still work well to about 5500 rpm.
In other words it'll make the horsepower of a 340 cammed 360 but have a hell of a lot more torque, probably to the tune of about 60 more foot pounds.
I used those type of heads and did exactly what I mentioned above on a 340 and it made 305 horsepower and 380 ft lb of torque. Near stock 340 cam but as a solid. It was .473 lift 110lsa 227 @.050, minus lash was about .458 or .460 lift... or an honest .450 at least after rocker n geometry losses.