69 Z28 Crankshaft number

[miket1]

I recently tore down an early build,, 69 Z28 302 engine, everything was very correct except it had a #3279 Crank, is it possible the 68 Z28 Crank carried over into some early build 69 engines.,,,

Thanks 

[bcmiller]

How early was the assembly?  Exact date.

[miket1]

1st. week of Oct. 1968

[buenymayor]

What is the assembly code stamped in the block  on the pad underneath the alternator? (will look something like V0914DZ) That will give the exact date the engine was assembled.

[miket1]

Block 386, Cast Sept. 30- 8,,, Stamped, Oct.5,  1968
186 Heads  Sept. 15 & 23, 1968
Orig. Pan - Tray,   Floating Rods, Balancer, Timing Cover, 021 Flywheel is  E-23-8,  etc.
 

Thanks

[69Z28-RS]

Were all the fasteners original?  and all parts 'std'?  ie..  If that engine had never been apart or rebuilt, then I'd guess that was installed in Flint...(but that would only be my opinion.. I have no idea when Flint made that transition)...

[jdv69z]

Is 3279 the 68 302 crank no.?

[1968RSZ28]

Is 3279 the 68 302 crank no.?

Yup, 3923279 is the '68 302 crankshaft casting number.

Paul

[jdv69z]

So if the 3279 crank is in this engine and was not factory installed, I'd love to hear how it ended up there. It wouldn't have been still available from GM by Oct 68, right?  (it would have superceded by the #1178 crank) And if not, it could only have come from another 68 302? Of which there were only 8,000 or so to begin with? Seems unlikely to me. Also makes me curious about my crank, since my 69 302 was assembled prior to this one?

[firstgenaddict]

Block 386, Cast Sept. 30- 8,,, Stamped, Oct.5,  1968
186 Heads  Sept. 15 & 23, 1968
Orig. Pan - Tray,   Floating Rods, Balancer, Timing Cover, 021 Flywheel is  E-23-8,  etc.
 

Thanks

FWIW
There was a 1178 in low mile original V1007DZ (386 block) I had.

[67rs/ss350 68z/28]

What balancer is on it?? 1968 or 1969? Balancer date?  How did they set timing?

[69Z28-RS]

What balancer is on it?? 1968 or 1969? Balancer date?  How did they set timing?

THAT is a great question....   

[jdv69z]

How do balancers differ 68 to 69? Is it the keyway offset? Then is the difference between cranks where the keyway is machined?

[69Z28-RS]

I had to go back to a prior thread .. attached here...  to recall the specifics.
http://www.camaros.org/forum/index.php?topic=10520.0

If I understand the change, and the reason correctly, then the crankshaft keyway itself is likely NOT different from '68 to '69, but instead the timing MARK on the damper, along with the position of the Timing Index (on the timing cover) are rotated slightly (10 deg or so) in order to be more visible and easier to see/adjust the timing.   If I'm not understanding this correctly even now, someone PLEASE correct me explicity ..    If that is correct, then it would be the damper and the timing cover that 'go together'.. with the crank keyway position being consistent over the years.

[jdv69z]

So do we know what the difference between cranks is?