340 engine with J Heads

Jim Ward said

I’d be curious as to the assembly date on that one Dave. Looks to be a 72 low compression build but an early 71 casting? 1.88/1.60 valves?

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I will get to that date. Yes 72’s did not have the 10.5 to 1 compression, they were lower compression. Yes the casting date is 1/21/71. The 72 have the smaller valves but I will measure them again.