[lethalvenom2008]

will the compression ratio raise if i put 2v on my 5.4 3v block?
i want a easy swap and power.
are the cooling passages the same?
are all 5.4 blocks and internals the same?

[96greengt]

Are you trying to put 2V heads on a 3V block??

The c/r will change, but I do not know the cc of the 3V heads. I know the 3V heads have more volume, so it will lower it some.

The 5.4 block and 4.6 block are different, and taller. But the 4.6 and 5.4 heads are the same for all 99+ on 2V motors...