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Spinner13 12-23-2019 09:45 AM

Formula 271 Sr1 Prop
Hi all

New to the site and looking for some info on correct prop for a 271 Im purchasing. Itís running a 21p 4 blade revolution. I have read some other threads on this but just want to open a new convo on this - any help and advice is appreciated!


GLENAMY 242SS 12-23-2019 09:59 AM

Congrats on your new to you Bird.

Redneckcustoms13 12-23-2019 10:43 AM

What engine and rpm are you running at wot?

Spinner13 12-23-2019 11:40 AM

Boat has the 502 in it - Iím yet to drive the boat myself as we worked out a deal in November (pending water test) and itís winter here in Ontario. The previous owner says it runs about 58mph wot depending on the load - but Iím not exactly sure on rpm - he also says itís running 40mph around 4100 rpm.

Redneckcustoms13 12-23-2019 09:03 PM

If it's a normal 502 mpi (~415hp) that actually sounds good for cruise. Without knowing what rpm its topping out at, unfortunately we cant provide much feedback.

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