ZR-1 Block Numbers

[1989ZR1#74]

Originally Posted by bdw18_123

The "SHIPPED" date is 5/24/90, only 2 days after the "PRICED" date. Couldn't have sat for 7 days, could it? "INVOICE" date is also 5/24/90.

You're probably right about the re-stamps just being a screw up. Just so happened that both plants messed up on the same car! But still seems strange for there to be such a big gap between the block casting date (03/07/90) and the build/priced date (5/22/90), especially since ZR-1's were in high demand at the time. Over 2 and a half months.

On the MM stamp, they didn't completely grind out the original number, you can still make out part of the original numbers. I'm pretty sure that the last 4 digits were "2299", which would match the last 4 of the VIN. Interesting mistake for them to make, would mean they knew that this LT5 was going to be for 2299.

They put them in a hold lot for 7 to 10 days incase they find something on the line during that time they can repair the ones in the Hold Lot.

The build date is really a moving target as the car isn't built instantly. You really sort of have to settle on a range. I would guess the car left the plant (meaning drove outside) 7 - 10 days prior to shipping. So probably the 5/17 time frame. The VIN number on the Boss seems almost impossible given the type of number the MM stamp is. They would only have to change the last digit maybe two on the stamp. Although if I had to guess since this is block #1 on Tuesday May 15th 1990, The stamper forgot do index the stamp forward by one day. Probably had a X0051400XX number. (although that would not show 2299 on it now would it.) Eric