Hello i have a 87 gulfstreem withth a bb 335 hp io .Does any one else have that combo? I run a ss 14 1/4x19 prop and have good results wot is right at the right specs. going good and plains out fine . but would 
like to know if any has run let say 15/1/4 x17 or a 19 1/4 21 for more top end .I know its a heavy load
like to know if any has run let say 15/1/4 x17 or a 19 1/4 21 for more top end .I know its a heavy load