Cummins March 28, 2016 01:53PM
Will the 6.7 crank swing in a 5.9 block? Is there any difference in the 24valve heads?
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Re: Cummins March 28, 2016 02:21PM
Yes. A 6.7 crank will fit in a 5.9 block. Use factory length rods and custom pistons with different pin height
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Re: Cummins March 30, 2016 01:09AM
24V and common rail 24v are different castings.
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Re: Cummins March 30, 2016 12:28PM
Whats the cubes with a 6.7 crank in a 5.9?
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Re: Cummins March 31, 2016 04:35AM
The 5.9 Cummins is 359 cu.in. with a 4.02" bore x 4.72" stroke. The 6.7 is 408 cu.in. with a 4.21 bore and 4.88" stroke. Changing the crank in the 5.9 gives a whopping 369 cu.in. engine (359 x (4.88/4.72)). Really not worth doing for the little increase in the displacement.
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Re: Cummins March 31, 2016 05:02AM
Its perfect for running alcohol in the LLSS class ( 370cu. ) is the limit.
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Re: Cummins March 31, 2016 05:10AM
There's lots of room to bore on a 5.9 block
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Re: Cummins March 31, 2016 09:34AM
How would a 6.7 run with a 2.5 charger at 3000rpm vs. a 5.9 at 3000rpm?
5.9 has hard time turning that size charger at 3000rpm doesn't it?
6.7 be that much better? wondering how they compare?
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Re: Cummins April 02, 2016 01:03AM
Does the 6.7 crank have the same rod and mains as the 5.9?
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Re: Cummins April 04, 2016 10:32AM
I know that we are putting a 6.7 crank in a 5.9 24v and they do. Same bearing part numbers too.
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Re: Cummins April 04, 2016 12:16PM
So I would assume it would fit in a 12v.
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Re: Cummins April 06, 2016 07:49AM
Most likely.
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