77 Scarab 300 Prop Selection
 

New to the forums here, and have a really newbie question. I just purchased a 1977 Scarab 300 with rebuilt sbc 350's. Only apparent performance work that's been done to the engines is a high rise intake. The props are both dinged up as well as the lowers on the outdrives. My question is, what kind of props suit these boats? Any and all help is much appreciated.

Need to answer a couple of questions what drive system and what props you already have? They should have part numbers on the inner hub of the propeller or cast into the side of the hub

Drives are the factory merc trs, far as props, I'll get the numbers off them tonight. 3 blade stainless is what I know, but I'll update later. Thanks for the reply.

Props are Mazco 1013 and 1014

Those motors don't sound like they are original to the boat that set up should have had BB chevys Not sure about Mazco props don't know what there part numbers are. That boat from Wellcraft with 330 Hp BB chevys would have come with a 23 Pitch merc 3 blade the 400 HP version came with 25 pitch props.

My understanding of it was that the 77's came with sbc and then in 78' the bbc were swapped in. It's got 3 blade props but I've got no clue on pitch.

Sorry to resurrect an old thread, but I have had a little down time with the boat and pulled a prop off. Ive got a number stamped on the inner hub ring that is 48-74599-21....Prop measures 15" across. They are Mazco Props and when I called them they said they had no way of telling what they were. Any insight or help?

P.S. I looked up a rudimentary way of measuring pitch with a downloaded template and came up with 28"

Pic

the number you give stamped on the hub is a merc part number, I'm not familiar with Mazco. I would think a prop like a mirage would be better than a cleaver on that boat.

http://www.offshoreonly.com/forums/p...5-prop-id.html

Mirage 25p???