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#512931 03/04/2009 7:14 AM
Joined: Feb 2009
Posts: 25
M
Apprentice
Apprentice
M Offline
Joined: Feb 2009
Posts: 25
Ok guys Im still new to the pre 70s so bear with me.
I did a search on timing an read about a ball on the flywheel an
a hole in the housing. I did see a say 1/14 hole on the driver side when I was changing manifold gaskets is this the for mentioned Hole I need to locate the ball in?
If so where do I go from there I read 7/32" is this correct for a 55 235. Also I am not sure the age of flywheel if it is from the 53 216 will it matter?


They did everything funny in them day didn't they!!

Mark53 #512945 03/04/2009 9:15 AM
Joined: Oct 2001
Posts: 3,458
4
Extreme Gabster
Extreme Gabster
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Joined: Oct 2001
Posts: 3,458
There is a hole there, but its the wrong one. I'm not sure why GM put a hole there, it just confuses people. You want the hole on the passenger's side, just above/behind the starter. It should have a little pointer in there if you look deep enough. I'm not sure what the 7/32" measurement is, just time it so #1 fires when the ball meets the pointer. You can probably run it advanced a few degrees from that if you want because modern gas is much higher octane than the old stuff and the compression on these engines is pretty low.


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A lone amateur built the Ark. A large group of professionals built the Titanic.
4ontheFloor #512971 03/04/2009 2:35 PM
Joined: Jun 2005
Posts: 388
H
Shop Shark
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H Offline
Joined: Jun 2005
Posts: 388

Here is a photo of the Flywheel BB . It takes a good light to see it.

Hoyt



hoyt #513094 03/04/2009 9:20 PM
Joined: Feb 2009
Posts: 25
M
Apprentice
Apprentice
M Offline
Joined: Feb 2009
Posts: 25
So I just time it like any other car but use the ball on the flywheel instead of timing mark on the harmonic balancer

Mark53 #513104 03/04/2009 9:40 PM
Joined: Jun 2004
Posts: 8,597
W
Riding in the Passing Lane
Riding in the Passing Lane
W Offline
Joined: Jun 2004
Posts: 8,597
Exactly


They say money can't buy happiness. It can buy old Chevy trucks though. Same thing.
1972 Chevy c10 Cheyenne Super
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