1974 F26 Prop Question

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Colin III
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Posts: 1
Joined: Thu Jun 15, 2006 9:45 pm

1974 F26 Prop Question

Post by Colin III »

Can anyone tell me what is the correct size prop size for a 1974 F26 with a 318 engine?
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Paul
Active User
Posts: 1141
Joined: Fri Jun 10, 2005 1:02 pm
Location: Windsor Ont.

Prop Pitch

Post by Paul »

My '78 F-26 HT came equiped with a 305 cid 228hp engine, 1:1 transmission and a 14 x 9 cupped prop. I have since added many options that have increased the weight of the boat and also upped the engine displacement to 350 cid 300hp with a 13 x 10 NiBrAl cupped prop. I run 4200 RPM @ WOT and a speed of 28 mph in fresh water. It cruises best about 3500 RPM @ 18-20 mph.

Hope this helps
Paul
Cruise Control
mississsippimolly
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Posts: 2
Joined: Wed Jun 21, 2006 11:02 pm
Location: Bettendorf Iowa Mile 486 Upper Mississippi River

prop size.

Post by mississsippimolly »

I believe the stock prop was 14x 10. Claimed top speed was about 29 MPH not Kts. I believe. I've got an original spec sheet and brochures for most years between 1974 and about 1985 somewhere if I had time to look. I pulled the original Chrysler from mine and replaced with a Commander Marine 351 Ford 265 HP back in 1993. The new engine was LH rotation, the Chrysler RH. I believe I still have the original prop if your interested.
Craig Wiegel
1974 F25
Mississippi Molly
chucka
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Posts: 186
Joined: Mon Jul 18, 2005 9:33 pm
Location: RI
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Post by chucka »

I have a 1975 F26 with a 318 Chrysler (re-powered in 2005) and run a 14 dia x 10 pitch Michigan prop. There is no cup in this prop. I get 4000 RPM from the engine with a clean bottom. My top speed is 18 knots ~ 21 mph. This is a bit less than the manuactuer spec of 25 mph with this power plant. I've added a 6" keel extension and an oversized rudder to improve tracking and low speed manuverability. Top speed is also significantly affected by loading. A full tank of fuel and 4 passengers knocks down the speed.
Good Luck,
Chuck
formerly
Lots A Luck
Trojan F-26 Express
Narragansett Bay, RI
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