69 Z28 Timing
 

-------Where do you 69 Z guys like to set your timing??? Car Im finishing up is bone stock in all ways.......Bill S

Re: 69 Z28 Timing
 

Did you have the distributor re-curved/set-up on a machine?

Re: 69 Z28 Timing
 

-----Sam,,,Jerry M set up the distributer, so I assume stock curve, weights and rebuild.......Bill S

Re: 69 Z28 Timing
 

If jerry set the distributor up he curved it. There should be a paper that came with it telling where to set the distributor up at idle and where it should be at around 2800 rpm's. probably 12-14 degrees at idle. No vacuum advance is necessary with jerry's set-up.

Re: 69 Z28 Timing
 

No vacuum advance? On a street car, you want it....

Re: 69 Z28 Timing
 

[ QUOTE ]
-------Where do you 69 Z guys like to set your timing??? Car Im finishing up is bone stock in all ways.......Bill S

[/ QUOTE ]

Disconnect vacuum advance and rev the engine until the centrifugal advance is pegged out (i.e. with Macneish distributor, should be all in by 2500-2800 rpm). Adjust for 36 degrees total. Don't worry about initial timing setting. Reconnect vacuum advance. If road testing causes knocking, retard the timing in 2-degree increments until knock stops.

Re: 69 Z28 Timing
 

-----Thank you, one and all!!!!!!! Its been so long since I had it done that I had forgotten (just another senior moment).........Bill S

Re: 69 Z28 Timing
 

[ QUOTE ]
Where do you 69 Z guys like to set your timing???

[/ QUOTE ]
From a technical stand point, your timing is determined by a few things, namely cylinder pressure & fuel...timing up to the point of detonation is not always the optimum point...most folks would be surprised at how *low* some engines like their total timing to achieve optimum HP.

Re: 69 Z28 Timing
 

Vacuum advaance should be no more than 10 degrees. Paul

Re: 69 Z28 Timing
 

[ QUOTE ]
[ QUOTE ]
-------Where do you 69 Z guys like to set your timing??? Car Im finishing up is bone stock in all ways.......Bill S

[/ QUOTE ]

Disconnect vacuum advance and rev the engine until the centrifugal advance is pegged out (i.e. with Macneish distributor, should be all in by 2500-2800 rpm). Adjust for 36 degrees total. Don't worry about initial timing setting. Reconnect vacuum advance. If road testing causes knocking, retard the timing in 2-degree increments until knock stops.

[/ QUOTE ]
Thats how I set my Z28 up and it purrs like a kitten, pulls hard up to 7000-7500 range on regular pump gas no additives. Good luck and have fun Bill. Mark https://www.yenko.net/ubbthreads/imag...ins/3gears.gif