351 in a B2
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Senior User
Joined: Aug 2003
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351 in a B2
i was wondering if anyone has put a 351 in there b2. I bought a 79 bronco with a 351 and have been wanting to put the engine, transmission, and transfer case in my 89 B2 with a 3inch body lift, just curious what troubles i might incounter when doing this major swap.
Elder User
Joined: Jul 2003
Posts: 870
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From: Upstate NY Rochester
351 in a B2
Hey there dmc919 and welcome to FTE!
If it were mine, I'd fix up the 79'. Not doable?
If it were mine, I'd Switch the bodies!
I've heard of guys dropping 460's in with some fender cutting and dumping their heater blower motor. You may need to do that as well, since the block is taller than the 302.
There's assistance coming, so stay tuned....
Talk with you later....
If it were mine, I'd fix up the 79'. Not doable?
If it were mine, I'd Switch the bodies!
I've heard of guys dropping 460's in with some fender cutting and dumping their heater blower motor. You may need to do that as well, since the block is taller than the 302.
There's assistance coming, so stay tuned....
Talk with you later....
Senior User
Joined: Jul 2001
Posts: 465
Likes: 1
From: Tower MN, Houghton MI
351 in a B2
Keep in mind a 79' bronco Is going to have a 351M, which has the physical size of a big block, with the power of a small block smog motor.
It would be far easier to swap in a 302 or a 351W, and it would have far more potential.
It would be far easier to swap in a 302 or a 351W, and it would have far more potential.
Senior User
Joined: Jul 2001
Posts: 465
Likes: 1
From: Tower MN, Houghton MI
351 in a B2
351W and 351C have small block bell housings, and the same motor mounts.
351M has a big block bell housing and motor mounts
351M and 351C have use the same oil pan, valve covers, cam, and heads(if they are for a 2bbl)
the 351M & C have canted valve like on a big block, the W does not.
The high points of the 351C are that you can spin them too insanely high rpms, due to the smaller 2.75" main bearings, and due to the huge exhuast ports and valve. The 4bbl cleavland heads are even larger yet, and have an effective power pand of around 4000-7000 rpms.
The low points are that are expensive to build, hard to fit headers too, and are for the most part, a high rpm motor.
The high points of the 351M are the heads. Being they are the same as a 2bbl 351C head, they do flow very well. The other real high point is that a 460 is basicly a bolt in swap for one.
The low points are the low compression stock, and all of them are a 2bbl smog motor, which have never made decent power. They also have a terrible oiling system.
The high points of the 351W are the small size, and the massive aftermarket for them. Stock they have made decent numbers, over 300hp stock, and were made with a roller cam.
The low points are the 3" mains are questionable at higher rpms, and the blocks aren't as strong as the 351C.
351M has a big block bell housing and motor mounts
351M and 351C have use the same oil pan, valve covers, cam, and heads(if they are for a 2bbl)
the 351M & C have canted valve like on a big block, the W does not.
The high points of the 351C are that you can spin them too insanely high rpms, due to the smaller 2.75" main bearings, and due to the huge exhuast ports and valve. The 4bbl cleavland heads are even larger yet, and have an effective power pand of around 4000-7000 rpms.
The low points are that are expensive to build, hard to fit headers too, and are for the most part, a high rpm motor.
The high points of the 351M are the heads. Being they are the same as a 2bbl 351C head, they do flow very well. The other real high point is that a 460 is basicly a bolt in swap for one.
The low points are the low compression stock, and all of them are a 2bbl smog motor, which have never made decent power. They also have a terrible oiling system.
The high points of the 351W are the small size, and the massive aftermarket for them. Stock they have made decent numbers, over 300hp stock, and were made with a roller cam.
The low points are the 3" mains are questionable at higher rpms, and the blocks aren't as strong as the 351C.
