I was reading that the 400 basically shares the the same block with the exception of the 400 having a taller deck then the 351c, if this is true then in all reality how hard would it be to put in a 351c in a 400 equipped truck such as a 1979 bronco?
all info on this will be greatly appreciated.

Josh

 

>I was reading that the 400
>basically shares the the same
>block with the exception of
>the 400 having a taller
>deck then the 351c, if
>this is true then in
>all reality how hard would
>it be to put in
>a 351c in a 400
>equipped truck such as a
>1979 bronco?
>all info on this will be
>greatly appreciated.

In reality the 2 engines share the same style of block but the bellhousing patterns are different. You would need to swap in a small block bolt pattern transmission as well as the motor.

 

is there any adapters out there so you could the 351c with a C6 avilable? if i would have change the trany would it be better to just go to a 351w?

 

If you're set on a swap, the 429/460 bellhousing pattern is the same as the M motors. The Windsors and Clevelands share the same patterns.

 

You may want to think about the pros/cons of a Cleveland swap. Having had 6 M blocks (351/400s) in various pickups and Broncos, and a couple of Clevelands in a Mustang and a 55 F-100, I would recommend staying with an M block for the truck. After the trouble and expense of swapping eng mounts and bellhousing, you won't have a significant performance gain over a comparable 351M. (Assuming both use 2V heads, 8.7-9.2 compression, have alum dual plane manifold, 600CFM carb, dual exhaust, mild RV type cam) I have had great success with a 400M with 8.5/9.0:1 compression, mild 1200-5000 powerband cam, Edel Performer manifold, 625 CFM 4V carb, and dual exhaust. In a heavy truck, torque is the answer, and the 400's 4.00 inch stroke really delivers it (compare to the 460's 3.85 in. stroke- I hear the arrows coming already! No, guys, I love the Big Blocks too!)Have used similar combo in 5200lb 79 Bronco with NP435, and a couple of 77 Hi boys with both C-6s and manuals. Have pulled boats, livestock trailers, etc. up to 8900 lbs. (14,000+ GCW) and have been happy with the performance. Food for thought.... By the way, I am an equal opportunity Ford power fan, counting flatheads, 289s, 351Ws, 302s, FEs, Y-blocks, the above mentioned Ms, a nice 70 429, a 415 cid V-10 and a 330 (5.4) Triton OHC in the fleet... even a 300 6 cyl which suprised a lot of people... I admire diversity under the hood.

 

Hey guys, this may sound like a stupid question, but does the Windsor class engines include the 289 and 302? I bought a 351C to put in my '77 F-100 equipped with a 400. No, its not one of those 400C's that was vaquely mentioned.

 

>Hey guys, this may sound like
>a stupid question, but does
>the Windsor class engines include
>the 289 and 302?
>I bought a 351C to
>put in my '77 F-100
>equipped with a 400

That's fine but you're going to have to swap the tranny also. The C and M have different bellhousing bolt patterns.

 

 

the 1973 400 that was put into cars, had a small block bell housing

 

Not all of them. I pulled a 400 from a '73 Galaxy. It has the big block pattern.

 

You can change the housing on the C6 from a big block to a small block without any other change.

My advice is to stick with the 400, it will give better all around performance in a heavy Bronco. You can build it up by increasing the compression ratio with a piston swap and adding a better cam.

Dan Lee
'53 F100
400C-4V

 

yes, the 289 and 302 cid engines are both windsors. Unless you are talking about the 302 Cleveland.......

 

uuuuhhhhhhhh....a c6 doesn't have a changeable bell housing....you can get a small block C-6....the case is integral with the bell housing, so you'd need a whole tranny to convert to a small block