351 m problems
New User
Joined: Jan 2008
Posts: 0
Likes: 24
I believe it would be better to find a 400 and do that up.
Most of that fule economy is probably going to the overload on the engine when pulling.
The 400 would do much better.
For the first 5 years of its life, my 400 got me 18 mpg city & 22 hwy.
That's IMP gallons.
Most of that fule economy is probably going to the overload on the engine when pulling.
The 400 would do much better.
For the first 5 years of its life, my 400 got me 18 mpg city & 22 hwy.
That's IMP gallons.
Thread Starter
|
Freshman User
Joined: Dec 2005
Posts: 28
Likes: 0
Ill look into a 400 the only thing is with keeping the 351 m is that it has not been tore apart since 1978 when it was built. will the exaust on the 400 come out the same as the 351 m? I removed the new dual exaust when I put in the 302, so I would have it all later if I wanted to go back to the m block. the parts for these engine are expensive, do you know where I can get a rebuild kit? I'm in a small town with one parts store if that would tell you anything. I just bought a 87 4x4, and the 78 is now a complete restore project for my boys. It will never leave the family . the 78 is a very fun to drive, and its the end of the good built hard working trucks. thanks mi1ion!
Thread Starter
|
Freshman User
Joined: Dec 2005
Posts: 28
Likes: 0
tjc did you go with a 4 speed auto? the radator will also have to be changed also for cooling lines, was there anything hard that you ran into in this swap. my engine is a 300 6 they tell me same as 302 or 351w transmission. I'll start buying parts as soon as I know what is needes so everything will be here with no running out for something I forgot thanks
i ain't rite
Joined: Mar 2005
Posts: 65,562
Likes: 5,599
From: Marlboro Mental Hospital.
no, i went with the C6, because my diesel does not have a computer, i did not feel like messing with trans electronics, and i do not need the od, i have the crown vic for a highway cruiser, and one of the drivers has a new dodge hemi 4 door 4X4 250, and likes to drive, so whenever something needs to be picked up over 100 miles away, he drives, and i relax in the back seat.
i might be old, but i ain't stoopid
i might be old, but i ain't stoopid
New User
Joined: Jan 2008
Posts: 0
Likes: 24
Go to this page and click the blue link that interests you.
http://home.earthlink.net/~bubbaf250/perf/perf01.html
http://home.earthlink.net/~bubbaf250/perf/perf01.html
New User
Joined: Jan 2008
Posts: 0
Likes: 24
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
i ain't rite
Joined: Mar 2005
Posts: 65,562
Likes: 5,599
From: Marlboro Mental Hospital.
the best way to get an idea of how it will run with a C6 is to drive it around in 4th gear. 4th gear in the 5 speed trans is direct drive, like high gear in the C6. that is how i determined i could live with the C6 in my diesel. i drove a friends 5 speed diesel for a day, and never used overdrive.
Thread
Thread Starter
Forum
Replies
Last Post
78ford351m
1973 - 1979 F-100 & Larger F-Series Trucks
19
Apr 10, 2006 10:19 AM