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i have an 89 sunbird eurosport 1,i believe it is about 19 feet long.it has an omc 4.3 2 barrel,and a 14x19p prop.what top speed should expect/get and at about what rpm.
my bluewater has a 4.3 alpha drive and ran 38 mph at 4200 with a 2bbl 14.25"/21pitch prop. I switched to a volvo 4bbl holley 600cfm vac secondary and top speed up to 44mph at 4600rpm. hope this helps.
