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Forum: Donzi

12-12-2007, 07:43 PM

Replies: 49

28 donzi w 350s

Views: 9,117

Posted By spilman

jj, also if you add sc's the rule of thumb is...

jj, also if you add sc's the rule of thumb is every 20hp yields 1mph(in the 70-90mph range); each inch of pitch will give/take 200 rpm's. Whipple is not making the sc for the 350mag/MPI anymore,...

Forum: Donzi

12-12-2007, 07:39 PM

Replies: 49

28 donzi w 350s

Views: 9,117

Posted By spilman

props for 28twin

joejohn, I used Throttle Up; they let you try the props and if they are not damaged, you just pay to ship em & try another set. They are test props and perform as such; not perfect edges. But you...

Forum: Donzi

12-09-2007, 10:08 AM

Replies: 49

28 donzi w 350s

Views: 9,117

Posted By spilman

fuel consumption...

In an Active Thunder 28 w/350mag/MPI's I get 2.8mpg at cruise,32-3500rpm's; this is better than a single 500hp, 500 or 525 efi....Probably 496 too. We run with a guy from NJ in some pruns in his...

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