ZT-280 454mag TOP SPEED?
#11
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Re: ZT-280 454mag TOP SPEED?
Originally Posted by zt260
Merc calls the 496HO 425HP propshaft. The 454mag was rated several ways, but I believe the 385HP model was at the crank so subtract ~30HP for propshaft. Either way I'd still say the 454mag will only hit low 60's in a ZT280.