Small Block & Big Block Chevy Specific Mouse & Rat Motor Discussion & Conversions

What block for 540?

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Old Jun 30, 2007 | 01:11 PM
  #21  
ProStreet_632's Avatar
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From: Friendswood, Tx
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Originally Posted by 68maro
they are 100-150lbs heavier than a big m and a couple other issues.
Buddy of mine just built his ProStreet 615 and used the 10.2 block, shipping weight was 250, slightly higher than the 9.8......However if you want to you can do what I did and get you a Donavon Aluminum block, shipping weight 114 pds. Big difference, keeps the weight down on the street.

Andrew
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Old Jun 30, 2007 | 02:28 PM
  #22  
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From: Greenwood, IN
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I have a Dart Big-M and a Merlin Block, both short deck, I like the Dart much better. The Merlin is about 30 lbs heavier based on when I scaled my car. The Merlin also has more bolt holes that go into the water jacket at various places, not a big deal deal, but I didn't notice them till I started putting water in.

My next block will be Aluminum, not sure if I'll get a the Dart or Brodix or something else. Anyone recommend the best aluminum BBC block.
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Old Jun 30, 2007 | 03:46 PM
  #23  
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From: Aztec, NM
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I really like my Brodix sbc block. I would give them very, very strong consideration for an aluminum bbc.
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Old Jun 30, 2007 | 04:14 PM
  #24  
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From: Friendswood, Tx
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Originally Posted by G&HRacing
I have a Dart Big-M and a Merlin Block, both short deck, I like the Dart much better. The Merlin is about 30 lbs heavier based on when I scaled my car. The Merlin also has more bolt holes that go into the water jacket at various places, not a big deal deal, but I didn't notice them till I started putting water in.

My next block will be Aluminum, not sure if I'll get a the Dart or Brodix or something else. Anyone recommend the best aluminum BBC block.

Donavon if you are going to beat on it with a bunch of spray.. The Brodix blocks have had a problem cracking under pressure, just my opinion.
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