1969 427 "512" Block Question
 

1969 427 "512" Block Question?

Does anyone know a definative time period as to when the casting dates went from the side of the 427s to the rear of the block on top by the belhousing?

Re: 1969 427 "512" Block Question
 

HI MID DEC 1968

Re: 1969 427 "512" Block Question
 

I think it was mid 69. I have a B 5 9 block here with the casting date on the side.


Jason

Re: 1969 427 "512" Block Question
 

I just looked in, "Chevrolet by the Numbers" by Alan Colvin. He says the change was made Nov 17th, 1969. The date location was changed at the same time the distributor boss was changed from the high to the short tower design.


Jason

Re: 1969 427 "512" Block Question
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: SuperNovaSS</div><div class="ubbcode-body">I just looked in, &quot;Chevrolet by the Numbers&quot; by Alan Colvin. He says the change was made Nov 17th, 1969. The date location was changed at the same time the distributor boss was changed from the high to the short tower design.


Jason </div></div>

Its not true.

http://i517.photobucket.com/albums/u331/Nikkewi/003.jpg

Re: 1969 427 "512" Block Question
 

My MN block was cast January 27th and it's cast on the side of the block.

Kurt

http://i300.photobucket.com/albums/n...ts/COPO-27.jpg

Re: 1969 427 "512" Block Question
 

It is a great reference book, but has a few errors in it.

Re: 1969 427 "512" Block Question
 

I wouldn't think the same plant would go back and fourth with where they placed the casting dates?

Re: 1969 427 "512" Block Question
 

My Block is from mold GM4.

http://i517.photobucket.com/albums/u...i/SANY0007.jpg

Re: 1969 427 "512" Block Question
 

I have a May of 1969 block and its stamped on the back of the block.