31 Scarab Top Speed
#1
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Joined: Feb 2001
Posts: 2
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From: L.A., CA, USA
I'm looking to purchase a 95 31 foot with twin 454 Mags. The engines are stock except for Imco exhaust. The boat's currently equiped with 23 Mirage 3-blade props. What top speed should I expect?
#2
I do say 60-65 mph rang !!
I had this engine setup in twin 454MAG in 28" Scarab with 25" Mirage @ 4800 run 108kmh.
now with 502EFI with 26"Bravo@5000 run 118kmh and with 27"lab Mirage @5000 run 121kmh.
I had this engine setup in twin 454MAG in 28" Scarab with 25" Mirage @ 4800 run 108kmh.
now with 502EFI with 26"Bravo@5000 run 118kmh and with 27"lab Mirage @5000 run 121kmh.
#3
I own a 31 scarab with twin small blocks.......(I know, weird combo, 425 plus HP cause I built it). Anyways, I run 70-71 on GPS, and there is an identical one that has the 365, or 385 mags, and we've run a few times. I say he runs about 60-65, like Mike above.
Here are a few I know of:
1991 - carbed 502s - 385's I think - runs about 68 - 70
1994 - carbed 425 small blocks - runs about 70
1994 - carbed 502's (about 500+ HP) - runs about 78
1992 - had 502 efi's - ran about 68-70
1992 - (above with rebuilt engines) - runs high 70's still needs to be tweaked
1991 - larry smith flat deck, about 700 HP, runs about 90.
These are all GPS numbers.
Here are a few I know of:
1991 - carbed 502s - 385's I think - runs about 68 - 70
1994 - carbed 425 small blocks - runs about 70
1994 - carbed 502's (about 500+ HP) - runs about 78
1992 - had 502 efi's - ran about 68-70
1992 - (above with rebuilt engines) - runs high 70's still needs to be tweaked
1991 - larry smith flat deck, about 700 HP, runs about 90.
These are all GPS numbers.





