why is this 351w bolted on to a C6 - Ford Bronco Forum
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post #1 of 26 (permalink) Old 04-20-2005, 11:18 AM Thread Starter
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why is this 351w bolted on to a C6

THE 351W i found is bolted on to a c6 trans on a 68 ford f-100 that came with a 460 and thy swaped it with the windsor. wont that 351w bolt to my 351m trans c6. I am confused. or did they make a 351 w that bolted on to a big block bell housing

Last edited by bigsal51; 04-25-2005 at 09:34 PM. Reason: Thanks for the your help
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post #2 of 26 (permalink) Old 04-20-2005, 11:24 AM
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my 88 has a 351W and a C6

I am lost in lala land for the time being.
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post #3 of 26 (permalink) Old 04-20-2005, 11:26 AM
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they must've changed the tranny to, cause a big block c-6 aint gonna go on a small block without a lot of grindin and cussin
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post #4 of 26 (permalink) Old 04-20-2005, 11:28 AM Thread Starter
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so do you think it will bolt on to my 81 and swap with my 351m
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post #5 of 26 (permalink) Old 04-20-2005, 11:51 AM
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i dont know if the W and M engines have the same bolt pattern or not
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post #6 of 26 (permalink) Old 04-20-2005, 12:52 PM
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The W and M are two different animals. The W is a small block pattern and the M is a BB pattern.
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post #7 of 26 (permalink) Old 04-20-2005, 12:57 PM
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There are two types of C-6s as well. One for the W, and one for the M. Or big block and small block, but those are really misnomers.

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post #8 of 26 (permalink) Old 04-20-2005, 01:01 PM
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More info on the 351M

http://home.earthlink.net/~bubbaf250/index.html

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post #9 of 26 (permalink) Old 04-20-2005, 01:04 PM
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Originally Posted by bigsal51
why is this 351w bolted on to a C6
You ask why would it be.
I ask you, why wouldnt it be?

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post #10 of 26 (permalink) Old 04-20-2005, 01:46 PM
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You ask why would it be.
I ask you, why wouldnt it be?
Such depth!
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post #11 of 26 (permalink) Old 04-20-2005, 01:52 PM
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-- No, that 351W will not bolt onto your 351M C6.
-- No, all 351W engines used the 351W bellhousing pattern, shared by the 302, 289, 351C, and 300-I6.
-- Your C6 uses a pattern shared by the 351M/400M (same engine block), and 429/460.

If you want to swap from an M engine to one of the small blocks I listed, you'll have to change your transmission.
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post #12 of 26 (permalink) Old 04-20-2005, 01:54 PM
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Quote:
Originally Posted by bigsal51
THE 351W i found is bolted on to a c6 trans on a 68 ford f-100 that came with a 460 and thy swaped it with the windsor. wont that 351w bolt to my 351m trans c6. I am confused. or did they make a 351 w that bolted on to a big block bell housing
Is someone telling you it's a Windsor, or have you looked for yourself?

The 351 Windsor has 6 valve cover bolts, and the 351M 351C both have 8 bolts. There are more differences, but those are the quickest to spot.

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post #13 of 26 (permalink) Old 04-20-2005, 03:12 PM
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Quote:
Originally Posted by Chuck
-- No, that 351W will not bolt onto your 351M C6.
-- No, all 351W engines used the 351W bellhousing pattern, shared by the 302, 289, and 300-I6.
-- Your C6 uses a pattern shared by the 351C, 351M/400M (same engine block), and 429/460.

If you want to swap from an M engine to one of the small blocks I listed, you'll have to change your transmission.
Correction. The 351C has a small block pattern.
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post #14 of 26 (permalink) Old 04-20-2005, 04:23 PM Thread Starter
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so there is two different trans c6. so i dont buy this engine.
if i am going to fix my engine where do i find a good combo
cam, head, intake, carb. even a used intake and carb would be
good for me. i need direction.
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post #15 of 26 (permalink) Old 04-20-2005, 04:28 PM
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post #16 of 26 (permalink) Old 04-20-2005, 05:00 PM
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Quote:
Originally Posted by bigsal51
so there is two different trans c6. so i dont buy this engine.
if i am going to fix my engine where do i find a good combo
cam, head, intake, carb. even a used intake and carb would be
good for me. i need direction.
First, you need to find out what's wrong with it. Unless there's more than the overheating problem you've mentioned, it doesn't sound as drastic as you make it sound.

Quote:
Originally Posted by Bronkzilla
stop playing with the nipples and mount them
Quote:
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\"Gee, if it wasnt for the shemale, I might be stuck doing this myself.."
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post #17 of 26 (permalink) Old 04-20-2005, 05:44 PM Thread Starter
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what can i do to check if the engine will take a few modifications. i know i have to fix the overheating problem first and i am going to buy a radiator in a few days. but what else do i have to do first to make sure that the engine can take it.
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post #18 of 26 (permalink) Old 04-20-2005, 10:28 PM
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Quote:
351C, 351M/400M (same engine block)
The only thing the "M" and "C" share are heads... the blocks are two diferent animals... A Cleveland WILL NOT bolt to a "M" tranny... I tried, and in process was informed that the "M" shared the 429/460 tranny, while the "C" would bolt to a 302/351W tranny... When I had my 79 Bronco, the 351M had a serious bottom end knock, so I pulled the Cleveland from my 72 Torino and wanted to put it in the bronco... wouldn't even line up... But I was able to bolt a 351W into the Torino...


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post #19 of 26 (permalink) Old 04-21-2005, 08:03 AM
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With the book in hand check both the compression and oil pressure. If both are good you can do just about any bolton mods you want to include cam/lifter upgrades. As long as it runs/turns over (with no large holes in the block) you can do the other mods that require a machien shop.

As far as the 351W w/C6 you found...you can take both trannies down and rebuild the one for the W using the parts you need like the tail shaft to fit your aplication.

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post #20 of 26 (permalink) Old 04-21-2005, 12:18 PM
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Quote:
Originally Posted by RTM
Correction. The 351C has a small block pattern.
Thanks -- corrected that in my original post to avoid confusion to others. Unlike most of the other engines mentioned, I've never directly dealt with a Cleveland, and was misinformed.

Quote:
Originally Posted by Tomh971
The only thing the "M" and "C" share are heads... the blocks are two diferent animals...
Sorry if that wasn't clear -- I wasn't trying to imply that the Cleveland and M blocks were the same (or similar), though I was in error in listing the Cleveland with the big-block bellhousing pattern. There are in fact some significant differences between the C and M even aside from bellhousing pattern -- they have very different main journal sizes, for one.

What I originally meant by that arrangement was that the 351M and 400M are the same block. They're very oddly put together -- they actually share everything except crank and pistons. The really weird part is the fact that they share the same rods, and the engineers made up the difference by using pistons with a VERY tall compression height in the 351M. Don't ask me why. Definitely not the way I would've designed it.
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