| Grant | -- 10-09-2015 @ 5:14 AM |
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What would the correct valve spring be for a 1936 LB engine? Is there a difference between a '36 LB valve spring and the earlier '36 version? What about 1937? Would a '37 valve spring be the same diameter and length and tensile strength?
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| TomO | -- 10-09-2015 @ 6:44 AM |
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The correct spring is P/N 40-6513-B. The replacement is P/N 78-6513. The replacement springs fit 32-48 engines. Tom
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| Grant | -- 10-09-2015 @ 7:50 AM |
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Thanks, Tom. I would have thought that the part number might have been 68-6513 for a '36. Does the 78 prefix mean that FoMoCo came out with a new-and-improved valve spring for the 1937 models?
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