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Old 24-01-2016, 11:50 AM   #1
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Hi guys,

I've recently purchased an extreme 21 with a 5.7, the 5.7 is shot so I've got the option to put in either 5.7 mpi, 6.2mpi, 7.4mpi. Has anyone every had any of these engines in a 21 before would be greatful of some performance figures and reviews.



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Old 24-01-2016, 01:09 PM   #2
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6.2 ran concurrent with the 5.7 (assuming the 350 mag type), had a bit more hp.

6.2 was intended as the stock replacement for the older, heavier, thirstier (but I'd assume a tad more bottom end as its a bb) 7.4
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