Help with 502 timing specs

[v8 stingray]

Hi guys,

I just picked up my new '47 Buick Super streetrod and it has a crate 502 chevy engine. All I got with the car was 4 pages detailing the customisations made to the car, but no details on the engine other than its a "crate 502".

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I've pulled the numbers off the block (14096859) and the casting date (C313) and from what I can tell its a 502 GEN V - but I need help confirming that.

Also, where can I go to get the stock timing specs? The Chevy site seems to just list the details for the current engines.

[hipockets]

I see you have an HEI. You need to know what part number it is, and what amount of centrifugal advance it has been set up for. The 502 is a mild engine. You will want to have around 14 degrees timing at idle, and 36-38 at full advance by 2800 rpm. Then connect the vacuum advance to full manifold vacuum so that you have 26-28 advance at idle.

I would also strongly advise to get rid of that power robbing and poor cooling flex fan, install a thermostatic clutch fan, and a proper shroud for it, which the blades sit half into and half out of the shroud.

[andrewb70]

I see you have an HEI. You need to know what part number it is, and what amount of centrifugal advance it has been set up for. The 502 is a mild engine. You will want to have around 14 degrees timing at idle, and 36-38 at full advance by 2800 rpm. Then connect the vacuum advance to full manifold vacuum so that you have 26-28 advance at idle.

I would also strongly advise to get rid of that power robbing and poor cooling flex fan, install a thermostatic clutch fan, and a proper shroud for it, which the blades sit half into and half out of the shroud.

^^^Sound advice.

Andrew