472 or 528? Siamese bore or no?

Discussion about the Hemi in general.

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Jess69Charger
Posts: 7
Joined: Sat Oct 07, 2006 12:11 am

472 or 528? Siamese bore or no?

Post by Jess69Charger »

I've heard Siamese bored big blocks (like the 528) overheat a lot, and the cast iron street blocks (like the 472) don't have as much of an overheating problem.

We're converting a 69 Charger to a Hemi RT Clone, we're on a waiting list for the 528, heard about this overheating problem and are now considering the 472 instead. The original plan was to have two four barrel carbs on the 528. Guess we could do that with the 472. But would sure appreciate some input from people who drive these engines.

P.S. I also posted this topic in the nightmarish Crate thread.
Bailiesdad
Posts: 433
Joined: Sat Dec 01, 2001 6:00 pm
Location: Maryland

Post by Bailiesdad »

You will not have any problems using the siameese bore blocks, their water passages flow plenty of water for cooling up to 600 plus cubic engines with 10 plus to one compression all iron or 11:1 with aluminum heads.
Jess69Charger
Posts: 7
Joined: Sat Oct 07, 2006 12:11 am

Post by Jess69Charger »

Thanks.
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