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Why the difference in power?



The weight makes up for it. Don't worry about that.

It really depends mostly on what your long term plans are.
If you are happy with 650 hp and never plan on going any faster, then a stock block is a good choice. If you want to go real fast later, the Aluminum Block is a great choice for expanding your horizons..

It's ultimately your choice..

I have Aluminum Block, and would never go back.. But that's me.. Just my opinion..

Have Fun either way.



Chris...