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Discussion Starter #1
Just want to confirm the timing marks on a BBC. I'm in the middle of changing a timing chain and the timing marks are at the 12 o"clock on both the crank gear and the cam gear. This is at 0* and the #1 TDC. Thanks.
 

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Correct.
If you were to stab the distributor at this point, the rotor would need to point to #1 cylinder terminal and the cylinder would be at TDC - ready to fire ...

When the marks are set 'dot-to-dot' (or the cam at 6 o-clock/crank at 12 o-clock) then the #1 is at TDC on the exhaust stroke transitioning to intake.

Sounds counter-intuitive ...

I always align 12 o-clock to 12 o-clock before stabing a distributor.
 

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Discussion Starter #3
Thanks John :beers:
 
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