Topic: I found my spare 21 stud engine to be a LB


1934 Ford    -- 07-15-2022 @ 6:45 PM
  My Spare engine is a 21 Stud LB block. After using some lacquor thinner and single edge razor blade to get 88 years of paint off it, there it was, LB stamped in the block at the left front edge of the block, perpendicular to the cam shaft and heads.
Next to it is another stamping 59568 parallel with the heads and cam.
I kept it as a spare for 25 years for my 34's and 35 Ford pickup. Now I'm too old and the engines in my cars are all fine, just not LB's (Line Bearings) that I know of. The rebuild tag from Montgomery Wards is 1961 and the engine was in a 32 Ford 5WC, ran great, only 10,00 miles but I let it sit to long. The bore measures 3 1/8. so it's 60,000 over. The 4th cylinder on the right side is rusty and may need a sleave or a good honing. The Valve valley is clean and the left head is still on it.
What should i do with it? Sell it?, What's it worth? What's rebuild with a sleave cost these days?

1934 Ford's since 1972


3w2    -- 07-15-2022 @ 11:09 PM
  Not a big deal, but the 'L' in LB stands for "large", as in "large bearing", in this case meaning insert main bearings rather than poured babbitt main bearings. The bearing caps and the spacing of the bearing cap bolts are wider to accommodate the thicker insert bearings.


1934 Ford    -- 07-16-2022 @ 5:59 AM
  Thanks, I knew it meant Insert Bearings, but why was it not IB. Then I heard someone call them Line Bearings. Now I know.
I think I want to sell it but don;t knpw what i shou;d do to it first. Any suggestions?
1934 Ford's since 1972

This message was edited by 1934 Ford on 7-24-22 @ 4:00 PM


37 Coupe    -- 07-20-2022 @ 6:32 AM
  I always thought "LB" stood for "loose bearing" as in removable.



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