well, were engine parts not made in batches that sometimes lasted up to 4-5 months? Ive seen factory engines with parts dated as far back as 6 months. Whats the deal on that stuff. Even seen carbureters dated back 4 or 5 months before the car was built. Any ideas on whats up with that?
I have a set of factory 1971 stage 1 heads with date codes M21 and M22 I also have the intake with a date code of what looks like A23 this engine had never been apart before i removed the heads and intake. I have no clue what they are worth and may be willing to part with them
dont sell the heads, I want them The intake was built after my car was, so I dont think it will work. I for sure want the heads though. Are they cracked or are they in good shape? Thanks
I was watching this thread with some interest since I have a set of 71 stage 1 heads . Mine have a J date code . I just do not see the difference in a date coded head since the date is under the valve cover ??????? I guess it just what a person wants .
I have more engines to dig out and take a look. Can you list the date codes that will work for you and what does my D-7 manifold date code mean? Chris
Chris, "D-7" is April 7th. If you bought my date code book you could read the dates on all your parts. Duane
I need anything from date code "M" of 1970 back. IE L, K, or J of 70. Probably dont want to go futher back than that though. Thanks
Still waiting to hear back on the heads, but if that goes through, I still need an intake. Thanks guys and just let me know if you have any more parts that might help.
http://www.buicks.net/shop/reference/bigblock_casting_numbers.html the heads were M date code and correct then why would an A date code be after your car was built?. A-23 should be january 23 and it is a 71 casting number so i dont understand why the intake wont work. o No:
Well, my car was built on the 4th week of december of 1970 making it a 71. December is date code "M"....correct? "A" would be january of 1971 which would mean that the intake was built after my car was built. If Im wrong, please correct me, because I would love to buy the intake too. Thanks for looking out for me.
aaahh. so the heads i have were built in 70 for the 71 model year meaning they didnt manufacture any 71 heads in december of 1971?
Im still needing heads, intake, and everything else besides the carb, engine, and distributer. Any help would be great. Im ready to pay
here is a M-4 date coded intake on Ebay http://cgi.ebay.com/ebaymotors/1971...9QQihZ004QQcategoryZ34198QQrdZ1QQcmdZViewItem
Thanks very much for looking out for me. Ill be bidding on that one. It would match me perfect. I do appreciate it. Am I going to have to beg for the heads?
OK I need a set of heads pretty bad. I need a set of 1971 661 heads with a late 70 build date like L or M coded for my stage 1. Any help would be very much appreciated.