chrissmith said:
Body number is ts40606l. I don't expect it to be the original motor, just curious of why the different #s.
What you've quoted here is the Commission Number, which is the number that should be on your title or registration (although many cars were registered by engine number back then). Taking Scott's car as an example:
1959 TR3
TS51339L -- Commission number
EB49811 -- Trimmed body number (there's another, usually 7-digit, number for the bare body shell)
TS51386E -- engine number
Note that the engine number is only a bit higher than the commission number; in fact, Scott's car has them about as close as I've seen for a TR3A. Often engine numbers could run a couple hundred or more higher than commission numbers. One reason for that is that the engines were also used in cars such as Morgans, Peerless/Warwick GTs and the Triumph 2000 Italia. The "EB" number, on the other hand, is usually a bit lower.
Whatever your engine turns out to be, it appears NOT to be the original engine, but that's not at all surprising after 50+ years!