Pete Loomis

Hi guys,
I am in the process of doing an engine swap on my 1988 convincor. Trying to figure out what prop to use. I had the 330hp 454 with a 3 blade 23p. I am now putting in a 502 efi 435hp. Any suggestions on what prop? Diameter, pitch, 3/4 blade?? Any Help would be great. Thanks, Pete

sabo

iTrader: (2)

try a 24p bravo 1 4 blade or a 3 blade 25, should run mid to high 60's, what speed and rpm where you getting with the 23?

Gimme Fuel

stock Bravo I's seem to do quite well on the 251's. I think 24p might be a hair too small if you are the 435 hp 502. Try a 26p. The 24p bravo I on my 415 hp 502 in my 253 (slightly slower hull compared to 251) turned right at 4900-5000. Ideal will probably be around 25p so either prop will be able to be modified to somewhere in between if it is needed.

ChainBoater

Our old one with same power ran a 25 mirage.