63 and 64 engine block interchangeable?

[Henrik Sonne Hansen]

I read the section: 1963 & 1964 Engine and Transmission Facts, but still in doubt if the engine block of a 63 and 64 are the same and interchangeable?

More specifically, will I be able to use all my internal parts, heads and intake from my ´63 on a ´64 block. Except for the pistons.

I found a crack in the block of my freshly rebuilt ´63 engine. Sourcing a ´63 block here in Europe is not easy, and if a ´64 block is the same except for the bore, that might ease the seach.

[Russ Austin]

If it were that easy, it would been done already. The pistons have a different pin height, so you can not just slap in 429 pistons into a 63 rotating assembly.

You can however put in a 64 engine with the Hydra Matic crank. It bolts right up to the car and transmission.  I am also working on an adaptor ring so a 64 engine with the Turbo Hydramatic crank will bolt right into a 63. 

[Jason Edge]

Internals, other than the lifters and push rods, are different.  Cylinder heads are very different due to different bore and odd size head bolts used in 64. Intakes are the same 63 to 66. Front engine covers can be swapped if you use the correct oil pump gears for that year cover.  Oil pans are interchangeable. Left exhaust manifolds are the same. Right exhaust manifolds are different. 64 has 2 different crankshaft depending on transmission. Valve covers are generally interchangeable but may have some differences in external heater hose brackets.