70 Z L24 no motor number???

[MikeZcar]

I just drug home a 70 (8/70 #9033) with AT and A/C, been sitting since 84 and all looks original. Had planned on a complete resto(floors and rails main problem) but the motor has me puzzled, it has the L24 stamped but the motor number boss is blank, parked way back in 84 and it looks it, still got the 2400 valve cover, right carbs etc, but I can't see any evidence of a stamping at any time. Oil, soap, brass brush, more soap etc, see nothing, I put a machinist straight edge across the 2 bosses and they are right in line. Looks to me if the number was ground off it would have knocked at least a couple thousanths off. What gives? Will not be a resto(at least by me) if I can't make myself feel good about it being the original motor. Factory(Dealer) replacement? Older swap?, it was 15 when it was retired, plenty of time to kill a motor and put in a rebuild. Any thoughts? Thanks, Mike in Arkansas

[Fun_in_my_z]

Hey mike what part of Arkansas are you from?

That sounds really strange for the number to not be their. evan if it was a rebuild it would have some kind of a number on it. Least i would think so.

Keep cleaning and look over the whole block it should be their.

Ps. Im in Vilonia

[1 Bravo 6]

Mike,

If the number had been ground off there would surely be tell tale signs of grinding. Most unusual. Perhaps stolen at some time in the past ??????????

It happens.

You are looking in the right place aren't you ?????? Right hand side towards the rear ?????????????????

Rick.

:devious: :devious:

[Alan Pugh]

I have seen in the past new bare blocks ordered from the manufacturer come with no engine number stampings.

One case in point was an RB30 block straight from Nissan.

[Zup]

Welcome Mike---

Another Arkie here----I'm in Bentonville, Arkansas

[MikeZcar]

I am in Little Rock, there looks to be "swirl" marks on the pad but like I said with a straight edge there is no material missing from the motor number boss.