351 Dreaming
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Junior User
Joined: Oct 2007
Posts: 64
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From: Summersville, WV
351 Dreaming
My dream has become a reality.
Yesterday I purchased a 1995 F250 351. Not only is it my first 250, it is my first 351. I now own or have owned 300's and 302's. I think the 300 is the best engine ever made, by Ford or anyone else, but it does not have the rumble that I crave.
Just so excited I had to tell someone. When I get it home I will take some pics and post.
Engine
Yesterday I purchased a 1995 F250 351. Not only is it my first 250, it is my first 351. I now own or have owned 300's and 302's. I think the 300 is the best engine ever made, by Ford or anyone else, but it does not have the rumble that I crave.
Just so excited I had to tell someone. When I get it home I will take some pics and post.
Engine
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Junior User
Joined: Oct 2007
Posts: 64
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From: Summersville, WV
Thanks guys, I was wondering about the low end. I didn't think it would be the same. And, I plan to beef it up a bit. Not sure what modifications are out there, but I am all giddy with anticipation.
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
I don't know about that... I have never seen a 300 powered truck break tires loose like my 351 did. All stock the 5.8 is a bit of a pooch but it's easily upgraded to a level the 300 can't touch.
Elder User
Joined: Feb 2009
Posts: 786
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From: Up Up Upstate, NY
Might just be me but i think long tube headers did alot for it. I was thinkin about a k&n air filter. good idea?
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Posting Guru
Joined: Oct 2009
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From: Ohio
You're correct on the engine easily being upgraded though.
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Posting Guru
Joined: Oct 2009
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From: Ohio
The LT headers are a great addition to this engine, as is a free flowing cat and exhaust. getting the engine to breathe better is probably one of the first and best steps to take, expecially if this is a driver while being a build project.
FTE Legend
Joined: Jun 2006
Posts: 31,930
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From: Ottawa, Ontario
Yes in stock form.. the I6 is impressive compared to the others in terms of all out grunt. But that table is way to easy to turn completely in favor of the 5.8, add longtubes and a cam and it produces more TQ from idle up and close to twice the HP, all with stock drivability and no computer issues. The 5.8 can deliver the best of both worlds but you'll want a manual transmission to get the highest milage figures, the E4OD simply revs it too much to get sensible milage.
Laughing Gas
Joined: Jan 2008
Posts: 751
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From: NC
I understand 300's may hit their torque peak sooner, but do they really produce significantly more torque (by the numbers) down low than the 351?
I wouldn't doubt it, but is the difference as big as its made out to be?
I wouldn't doubt it, but is the difference as big as its made out to be?
Postmaster
Joined: Dec 2004
Posts: 2,941
Likes: 30
From: Maple Valley, WA
You guys and your six garbage. Ive owned all three engines in trucks and vans. The pre 94 351 stock will walk all over the 300, let alone an F4TE engine. With the right gears, 3.55 and above, a 5.0 will walk all over a 300 and still get better mileage. Everytime I come back to this site, its seems like the 6 talk is even more exaggerated. First it was the 302, and now the 300 has more power than a 351. Get real. The 300 six is a bulletproof engine, no doubt, but it is no powerhouse, there was a reason it was the BASE engine in all trucks, cheapness.
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
Strictly by the numbers the I6 was rated at 260 ft/lbs at 2000rpm and the 5.8 at 300-325 ft/lbs at 2800rpm. You have to extrapolate the curve back down to 2000rpm but even if the 5.8 is down 50 ft/lbs that just puts it on par with the I6 at that engine speed and everywhere else the 5.8 owns it.
Hotshot
Joined: Sep 2001
Posts: 11,958
Likes: 228
Personally I would not bother with K&N. They are a pain to clean. I have had them before. I don't want to fool with the whole cleaning and oiling process anymore. Also, I have seen that it really lets in more dirt than the OE style element does. Also, the more the KN gets washed the material starts to degrade. Think of clothes that have been washed many times and become worn out.
I have disposed of all of our KNs for one reason or another. Mine had small holes in the cotton gauze. The one on our Cobra fell apart. The one on our Honda actually ripped. These were all the drop in replacement filters.
I have had the FIPK also. That is a total waste, it just sucks in hot air. My truck also did not run as good with it installed. When I had the my fuel economy went down. I had a replacement KN as well. I get the best fuel economy with a OE style filter. That leads me to believe that it is also running the best.