Help with Yenko block engine no. please

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**drdave69** · #1 04-27-2004, 03:42 PM

Part of that number looks like an engine code stamp.
TQ524LB5275126. The Q is most likely an O. That appears as TO524LB. Tonawanda engine plant, assembled on May 24, LB is the code for a 1969 427/335 hp for manual trans.
I did see code LB as a code for a 1965 396 but I asssume this is a 1969 block.

GMH454 · #2 04-28-2004, 01:52 AM

Yeah thats what has me so puzzled. Its a Yenko Alloy block, probably based around the 356 Can Am block. Date built don't know but had to be at least mid seventies.
If this is a machine shop stamping, why so many digits ???
Been here since the late 1980s almost before the restamp bug bit the Corvette hobby.
Guess its just a interesting bit of trivia.

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