What's the appeal of an aluminum engine block?

[fordracing65]

Originally Posted by blykins

I would think that a $$$$ "aftermarket" block would be an ego-booster. Not solely focused on aluminum.

If the Cup guys can go 200 mph at 9500 with a cast iron block, you guys can drive 5 miles to Starbucks without nosing over and missing your turn......

I believe nascar uses compact graphite iron blocks not cast iron. They are stronger than cast but lighter. They get a new engine every 1000 miles. So it makes sense to use iron. Formula 1 uses aluminum but those engines are on a different planet than a nascar motor.

[blykins]

Originally Posted by fordracing65

I believe nascar uses compact graphite iron blocks not cast iron. They are stronger than cast but lighter. They get a new engine every 1000 miles. So it makes sense to use iron. Formula 1 uses aluminum but those engines are on a different planet than a nascar motor.

Yes sir, that is correct, but that just changed with the newest generation of FR9 engines.

Up until a few years ago, they were all cast iron blocks.

Those stupid CGI FR9 blocks are like $13k a piece.