Thread: Lincoln 400 vs. Ford 351

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Chaz, if you're talking 351M, it's the same basic block as the 400 and the 400 is an easy interchange. If it's a 351W, it's not. Hope this helps.

OK, I was a little confused, now I am really confused! So the 400 block mounting is the same as a 351M. I guess I didn't realize there were two 351 blocks.
Thanks,
CHAZ

Actually there were 3 351 blocks. The 351 Windsor, the 351 Cleveland (1970-73) and the 351 M. The 351M is the same block as the 400. The Windsor and the early cleveland used the mounts that were the same as the 302 and a bellhousing that was the same as the 302. The 351M and the 400 use the big block bellhousing and they have the same mounts as each other. If you really want to get confused, the FE series (352-427) had totally different mounts and bellhousings than any other series. Makes engine swapping a lot more difficult than on Cheebies.

Originally Posted by Oldf100fordman

Actually there were 3 351 blocks. The 351 Windsor, the 351 Cleveland (1970-73) and the 351 M. The 351M is the same block as the 400. The Windsor and the early cleveland used the mounts that were the same as the 302 and a bellhousing that was the same as the 302. The 351M and the 400 use the big block bellhousing and they have the same mounts as each other. If you really want to get confused, the FE series (352-427) had totally different mounts and bellhousings than any other series. Makes engine swapping a lot more difficult than on Cheebies.

technically there are 4 351ci ford V8 engines. all had a 4" bore and 3.50" stroke.

1: the 351w(the second 351ci V8)

2: the 351c(the third 351ci V8)

3: the 351m(the fourth 351ci V8)

4: the 352fe(the first 351ci V8)

and actually all displace 352ci, but when fron brought out the 351w in 1969, they called it a 351 to avoid confusion with the 352fe big block.

thesals, the 400 is a good platform to build a decent engine with. cams are the same as the 351c, as are the heads. in fact hot rod magazine built a 400 a few years ago that made 385hp iirc, and mounds of torque. cost? about $2000.

., m is for midland

Yeah, there is a 351 W (Windsor) and a 351 M (some people say the M stands for Modified, but I remember seeing once that it stands for something else.) Very little performance stuff out there for the 351 M and it's sister engine, the 400. They were generally used in luxury or full sized sedans.

Don


Sorry Duane, we were typing at the same time.................

No problem, Don. At least we got the info across. And your right about the 351M/400. You can get cams and intakes and that's about it, although in the latest Hot Rod Magazine there was an article about slightly stroking a 400 and hopping it up. They got over 500 HP and 500 lbft of torque out of it.

the 351c, 351m, and the 400 were all in the "335" engine family. the 400 is the 351m with a 1/2" longer stroke. i think it's actually 402 or 403 cubes. it's good for trucks because that gets you more low-end torque but sacrifices horsepower on the top end.

my dad has one in his '78 3/4 ton. we put a new 280-300hp engine in it about 4 years ago, but even the stock motor had good torque. they sure love gas, though, and he has to run premium it it to keep it from knocking. i wouldn't recommend that motor if you had other options.

Well, Andy, you can call the 351 Cleveland a 335 block and it does share the same design, however it uses the windsor deck height, windsor motor mounts, windsor bellhousing. It was only produced from 1970 to 1973. Made a performance boost when I put one in my 78 Merc Monarch with 4 speed.

i'd reccomend staying away from a 400, they really dont have a lot of power, expensive to get a lot of power out of them and very expensive to keep your gas tank full, they get terrible mileage and need premium.....