Not Ranked
When I built my engine, I went iron.. Yes, the alloy block is cool, but it's only 80lbs lighter, but cost is a fair bit more. (I went with a DART Iron 351w block with a 9.5in deck)
For street use, I didnt see any benefits. For the track, the 80 or so lbs will make a difference, but I dont plan to track.
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