Trojan Boat Forum

clueless when it comes to engines but...with a 79 f26 flybridge what could one expect using a 260 chevy engine? would it get onto plane? normal weight load what speeds can I expect? thanks

When you say Chevy 260 engine do you mean 260 hp? My 1971 F26 with a Chrysler 225 hp engine cruises at 18 knots (21 mph) at 3,000 rpm using a 15 x 11 prop (no cupping). The shaft angle on the 1971 is 15 degrees. I believe the shaft angle on the 1979 is steeper because it does not have a V drive. With the lower efficiency of the steeper shaft angle, I would guess 260 hp would be about the same or slightly faster. It's just a guess and YMMV.

ummmm I jut red what wasstickered on one of the vavle covers , it said 260 . it is a chevy engine right hand rotation that cae out of a searay that had two engines in it , the other enine was blon so the onwer yanked oth and replaed the wih brand new motors. other then that thats all I know about engines just want to make sure before I dump money into the engine tat it will et my boat on plane. not to concerned about the speed .

guess I need a new keyboard here as well , sorry for the typos , keyboard couldnt keep to my fingers guess this is where proof reading comes in handy huh

It's a Mercruiser 260. But to answer your original question, it should, given all else is proper.

The Merc 260 is 260 hp. It will definitely get the boat on plane. My original estimates are probably close to what you'll actually see.

What engine is currently in the boat? If you are replacing a Chrysler engine with a Chevy engine, you will also need a new bell housing.

oriinal engine was a 318 when Ibought the boat it had a 440 stuffed in it that was blown , bought this engine for $1 compete "guy musta felt sorry for me " so this is what I have to work with , thanks

did he give you the bell housing too ? If not you'll need one. The Merc 260 is a Chevy 5.7 (350) and is a good engine...you can whip on it all day and it'll keep workin'

The 260 will be 260hp... or a 350cu in block.

Powerboat Guide suggests the 26 Express was 6,000 pounds (flybridge model will be a bit heavier), and with 230hp standard engine would cruise around 14-15 and top out around 25 knots.

With the bigger engine you will get another 10-20% I would think .

By way of comparison : my father's old 28' Trojan (1969 vintage) was wood.
Weight : 6,600 pounds
Beam : 10'10"
Engine : Single Chrysler 383 (putting out 260hp)

We cruised around 1800 RPM at 16-18 knots.
Only opened it up once or twice, never pushing it beyond 3500 RPM (25 knots)