460 omc marine engine specs?
Senior User
Joined: Mar 2001
Posts: 136
Likes: 1
From: Highlands USA
460 omc marine engine specs?
I have a 7.5 OMC KingCobra rated at 335HP, question is what would I need to change to install this into a 78 F250 4x4, replacing a very weak 400. I've been told this is a CJ engine and the marine cam is more for upper RPM performance. Would this give me satisfactory performance in my rig, 4:10 gearing and 17/40 tires? I have both the standard and a spare automatic from another 400. Thanks Trey
Elder User
Joined: Jan 2000
Posts: 966
Likes: 2
From: Crooked River Ranch, OR
460 omc marine engine specs?
Factory marine cams are NOT for high RPM. Marine engines are built for torque and the average upper RPM limit is around 4,800 RPM...not that the engine cannot RPM higher. Marine engines generally use the best of parts so you have a good base engine, but I would change the cam to fit the intended use of your truck.
Deen Hylton
Ford F250 460 C-6, K&N, Headers, Dual Exh.,Comp. Cams,Shift Kit
Pioneer CD w/Bose Speakers.
Other Passion: Blown 77 Corvette (Sorry Guys/Gals)
How I can afford to Drive the above: 93 GEO Metro
Deen Hylton
Ford F250 460 C-6, K&N, Headers, Dual Exh.,Comp. Cams,Shift Kit
Pioneer CD w/Bose Speakers.
Other Passion: Blown 77 Corvette (Sorry Guys/Gals)
How I can afford to Drive the above: 93 GEO Metro
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