Hangtown85

I can’t seem to find a solid answer to what my timing should be set at on a 1969 442 . It’s got the 6.6 l 400 w/manual transmission. All stock besides a edelbrock carb . Seems to have a slight miss and i can’t seem to stop it from over heating. I’ve replaced the thermostat, try different temp thermostats , brand new aluminum radiator w/ electric fan . Any help would be appreciated

RetroRanger

Distributor info?

base timing will depend on what distributor and its advance settings.

if a stock points set up start w OE setting.

what ever distributor check to make sure the advances are working and not sticking.

Hangtown85

it’s got a Delco hei distributor

oldcutlass

Try 16* BTDC.

66SportCoupe

What kind of electric fan are you using??

Hangtown85

[QUOTE=66SportCoupe;1371655]What kind of electric fan are you using??[/QUOTE

I’m not sure on the brand . I bought it as a package (radiator and fans ) from Jeggs . The radiator is a Griffin but it was a fairly cheap set up . $600 something for both . Its a big fan , seems to move a lot of air .

Firewalker

Sounds like, if its ignition either retarded ignition timing (vacuum canister not working on the distributor, stuck weights in the distributor, ported vacuum used instead of manifold for the canister) Besides this the fan might be wired backwards so make sure with it running it blowing into the radiator. You hand will work to feel the air. A blown head gasket or too much antifreeze will also cause overheating (antifreeze is a lousy coolant compared to water).

dbater

If using the HEI distributor,would be unusual to have a misfire, check that the distributor is grounded and you have true +12 volt source not through a ballast resistor.