Need help id'ing engine.. 351 or 400??
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Joined: Dec 2001
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From: Louisville,Ky.
1977 truck block. Definitely not a 351C. They were never put in American trucks and were only available in the states from late 69 to 74.
I think that they may use the same block, just a longer stroke crank. 3.5" stroke for the 351 and 4" stroke for the 400.
I think that they may use the same block, just a longer stroke crank. 3.5" stroke for the 351 and 4" stroke for the 400.
Elder User
Joined: Jun 2008
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From: Duncan B.C.
Best way is probably just to measure the stroke. According to the shop manuals, the only external difference is the crank balancer, and it doesn't say what the difference is, or whether you can tell by looking at it. So, unless somebody here knows how to tell the crank balancers apart, (part numbers, maybe?), measure the stroke.
New User
Joined: Aug 2009
Posts: 15
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From: West Sacramento,ca
I belive that is a windsor block. dte if I remember right is 78 or 79 I will look in my engine book
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New User
Joined: Aug 2009
Posts: 15
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From: West Sacramento,ca
Ok here is what my ford engine book sez the D is the decade 1970. the 7 is the year code I.E 1977. The letter t stands for the model truck. the letter E is the engineering componet (engine) the letter A is the truck division. Most of the trucks with this code came with the windsor block vans 1/2 ton pickups up too like 1982 some broncos. You can pull the valve cover off and get me a head number and I can give you better specs or the sure fire way is to pull the intake manifold off and it will say right in the valley (351 w) or it will have an 400 m. the 400 is more common to the galaxies,
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Elder User
Joined: Feb 2009
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From: effort,pa
i know the diferances between windsor's , modifieds and big blocks.. i'm a ford guy, but i cant find no way to tell if this is a 351m or a 400.. aint the code on the block gonna tell ya that.
it's for my brothers 78 bronco, the engine poped last year and he bouught another bronco that was suposes to have a 400 in it to swap the engine outa.. nice solid running engine, was rebuilt a few years ago.. but is it a 400 or a 351m??
it's for my brothers 78 bronco, the engine poped last year and he bouught another bronco that was suposes to have a 400 in it to swap the engine outa.. nice solid running engine, was rebuilt a few years ago.. but is it a 400 or a 351m??
Elder User
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From: Duncan B.C.
Don't pull the oil pan to measure the stroke. Just pull a spark plug, insert something that will fit in the hole (I use a welding rod) and find a reference point ( I use another welding rod layed or taped across some convenient spots where it won't move ). Then mark the upper and lower limits of it's tavel while turning the engine over BY HAND, and that is your stroke.