Need help id'ing engine.. 351 or 400??
Elder User
Joined: Dec 2007
Posts: 813
Likes: 6
From: Up Nort Minnesota
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.
something like a brazing rod of a stiff wire like coat hanger wire. find the bottom of the stroke & mark the rod/wire bottomed out on piston & then find the top of stroke & mark it again, measure distance between marks & you've got it.
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cruz76
335 Series- 5.8/351M, 6.6/400, 351 Cleveland
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Mar 26, 2006 05:40 PM
theonlybull
1973 - 1979 F-100 & Larger F-Series Trucks
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Jan 13, 2003 08:04 PM
