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Forum: General Racing Topics

02-12-2011, 07:57 PM

Replies: 20

any marathon changes

Views: 3,557

Posted By Mike Bontoft

They were Dart blocks. A lot of engine builders...

They were Dart blocks. A lot of engine builders use the 4.560. The engines breath a lot better with the larger bore. I will be back on building the Kiekhaefers soon and these are the blocks I will be...

Forum: General Racing Topics

02-12-2011, 09:45 AM

Replies: 20

any marathon changes

Views: 3,557

Posted By Mike Bontoft

I think the change to 1.4 is a good one. Even the...

I think the change to 1.4 is a good one. Even the older 1050hp mercs could not be run in A with the 1.6 penalty. It took a special build to come in at 510 cu in each. With Embassy in 2010 the motors...

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