Hp limits

[Outlaw440]

I remember there was an old thread here where someone asked about the hp limit of the 8.2" deck block and the answer was 1500+

So..my logic thinking was that since the stock 351 production blocks were stronger than the production 302s from ford, maybe the DART 9.5" deck motors are stronger than the 8.2" ?

If so what are the power limits?

What is the best iron block to use? And is the Aluminum block just as strong?

For what it's worth the intended application is a 440 (4.135" bore, 4.1" stroke) with twin turbos, or maybe go with slightly more cubic inches if i feel confident with it.

Any help is greatly appreciated. When it was time for me to consider an engine block DART was my first choice.

[kevin@dart]

The cast aluminum block is NOT as strong as cast iron. Typically we say around 900 or so max limit although some builders have made more. The next step in an aluminum block to handle big power would be our billet block.

Our 9.5 deck blocks are limited to the 1500 - 1600 range. If the horsepower goal is more than that we like to go to a Compacted Graphite block which will gain around 30% in strength.

The best Iron block would be our Iron Eagle Compacted Graphite with billet caps.

[Awesome Bill]

I second that for sure! The windsor block is much stronger than the 302, I have a customer that is making 1300 hp with a 302 race series block with Eagle crank and rods! I hold my breath every time he runs.