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Prop size for 1977 F-30 twin screw Chrysler 318
Posted: Fri Oct 22, 2010 3:53 pm
by jwc
I bought this 1977 F-30 several years ago. Had heads on both engines rebuilt. Max RPMs I can generate is around 3200. My understanding it should max out at 4000-4200. I was told my props may have too much pitch. Does anyone know what the proper size prop should be for a Chrysler 318 on a F-30?
Posted: Fri Oct 22, 2010 4:38 pm
by Stripermann2
I want to say 14x11 props. What are on there now?
Posted: Fri Oct 22, 2010 4:48 pm
by hmc
14X10
Posted: Fri Oct 22, 2010 6:00 pm
by prowlersfish
I belive mine where 14X10 . First two things to check are the tachs and is the bottom and runing gear clean ?
Posted: Fri Oct 22, 2010 6:35 pm
by Stripermann2
Yep, need some more info. Bottom condition, prop size, mechanical condition of both engines, although I assume, you are getting the same results from both...Just a sliming of growth will effect your speed and rpm.
Posted: Fri Oct 22, 2010 7:54 pm
by mr elevman
mine are 14x11 clean bottom and 4200rpm 72 30' twin 318
Posted: Sun Oct 24, 2010 10:58 am
by wowzer52
Clean bottom?
Prop size?
Engine timing?
Forgot to untie from the dock?