If it is a 216 original engine it will have a large side valve cover that goes up around the spark plugs and two bolts in the top valve cover.

If it is a 235 of later venue it will havce a short side valve cover about 8" tall and four side bolts on the top valve cover. This could also be a 261 engine with these features.

If it's neither of these then do the numbers as referenced by others.


1953 Chevy 5-window 3100
In the Stovebolt Gallery
More pix on Picturetrail

Dave
Engine & Driveline Moderator

If you can't make seventy by an easy road, don't go. ~~ Mark Twain