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Why not more SBCs in boats?

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Old 03-07-2018 | 09:19 AM
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Originally Posted by ttrm007
I’ve chosen 427cid small blocks with 652 hp each on dyno. BBC is possible but very tight on this boat. Cool thread.


That is hot!!! How much torque?

Jeff
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Old 03-10-2018 | 08:28 AM
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Veloc410 and hallj, I pulled out the dyno sheets. The 652HP came in at 6200rpm and the highest torque mark was 610@5000. They make torque of 567 @3800 and 552 @6200. They make 602hp at 5400 and 435hp at 4000rpm.

No testing on the water yet but numbers seem to indicate they will do the job.
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Old 03-11-2018 | 08:41 AM
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What bore stroke did you use to get to 427?
Also, what compression?
Stout torque for sure.

Jeff
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Old 03-11-2018 | 01:13 PM
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Originally Posted by hallj
What bore stroke did you use to get to 427?
Also, what compression?
Stout torque for sure.

Jeff
4.125 bore, 4" stroke. Dart blocks, 10.5:1 so runs on 92 octane.
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