69 427 Big Block

[cdueced]

Do all big blocks have a threaded hole in rear of the block next to the crank on the left side,3/8 or 1/2 plug.Looks like threaded hole is part of the engines lubrication system.

[1950bulletnose]

Reply to your post of Sept. '03.

You may find your answer to your L88 question at link below. There is a tech forum there.

http://corvetteactioncenter.com/specs/l88/

[poncho62]

Originally posted by cdueced
Do all big blocks have a threaded hole in rear of the block next to the crank on the left side,3/8 or 1/2 plug.Looks like threaded hole is part of the engines lubrication system.

Generally, if my Geezer mind remembers, the oil plugs by the filter is a sign of a 4 bolt main block...............I will be corrected if I am wrong.