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« **on:** July 14, 2018, 08:47:20 AM »

So I just can't help myself had a couple of tunnel rams sitting around and decided to put on on the scorpion and see what it will do went from one 850cfm to dual 660s I am not to sure if it is going to help still has the large oval port heads 0490s head swap may be next. Trying to get a few more rpm ... we will see

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« **Reply #1 on:** July 14, 2018, 01:18:53 PM »

You might not get that many more RPM's, and you'll use a lot more fuel, but tunnel rams just look so cool on a jet boat! Looking forward to see what difference it made.

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« **Reply #2 on:** July 14, 2018, 01:48:09 PM »

Hook a vacuumed gauge up before you switch and check the reading with your 850 at WOT. If it’s close to zero then the two 660’s may be overkill.

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« **Reply #3 on:** July 14, 2018, 08:44:44 PM »

Quote from: angermgmt on July 14, 2018, 01:48:09 PM

Hook a vacuumed gauge up before you switch and check the reading with your 850 at WOT. If it’s close to zero then the two 660’s may be overkill.

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Ya we ran some numbers we think it might help the motor is a 11.5 to one 427 currently making 585hp at 6200rpm we are only getting 5200rpm out of it now running a cut A impeller as it was set up for much more HP the we may need to change out the heads to a set of rectangle port but they do look good

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Micky

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Micky

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