power brake booster code

[baldeaglemtnman]

I have an 11c built 69.  The tab on the top of the booster reads 0426. Anyone know what this means?

[GaryL]

If it is on the firewall side of the tab it is the GM part number. If it is on the engine side of the tab it should be a Julian date, but should only be 3 numbers. That is 1-366 for each day of a leap year. 11C should be less than 340 or so. Could be a replacement of some sort.

[baldeaglemtnman]

Gary,
The number is on the firewall side of the booster as viewed from inside the car. Thanks for the info. I'm discovering that the Z/28 I bought is either a fake or the poorest preserved example on earth. Gee, bet nobody's ever heard that before.

[william]

'0426' is the tab number for a 1970 Firebird with the HP option.

[baldeaglemtnman]

Thanks for the info. It seems I have purchased Frankenstein on wheels.