ZL1 or Yenko Block?

[Eddie M.]

here's the casting on the front

[Eddie M.]

on the back there is no plate used, the holes do not exist to bolt it on instead a soft plug is used

[Eddie M.]

another pic of the front casting

[Eddie M.]

casting number on the back

[Eddie M.]

also casted in on the opposit side of the casting number is 06017 on the front stamped in behind the timing cover SY30 BQ and stamp in on the timing cover surface mounting is (9578) this block also has screw in freeze plugs

[Stitch]

From Mortec website .

3946052....427.......69......4-bolt, Alum. ZL-1, Mark IV

http://www.mortec.com/bbc.htm

[JChlupsa]

Stitch
I think what Eddie is looking for is whats the orgin of the Winters snowflake with the letters in the middle. Was it a special block that was used and for whose Cars?? Yenko?? ZL1's or was there a racer out there that had them made and had the middle of the snowflake removed and replaced with his initials??

[Stitch]

Gotcha...............oughta learn to look before I leap eh ? [img]/ubbthreads/images/graemlins/blush.gif[/img]

[JChlupsa]

Sometimes leaping is the only way some of us can learn.

[Mr. T]

What was the purpose for removing the center of the snowflake and putting in the initials? Was it for theft reasons? [img]/ubbthreads/images/graemlins/dunno.gif[/img]