Pontiacs typically like 12-14 degrees initial timing. It's a good starting point.
Try Hemmings Motor News
The firing order for a 1969 Pontiac Lemans 350 is: 1-8-4-3-6-5-7-2 Additional info FYI: Ignition timing: 9 degrees BTDC #1 cyl location: LEFT FRONT Distributor rotation: COUNTER CLOCKWISE
your dwell angle will be 29 timing ( initial ) will be 6 degrees below TDC
quadrajet carb but not sure what size it was. ANSWER: The DISTRIBUTOR was the same single point type used on all 1969 Pontiac V8s, except for the extremely rare optional "magnetic pulse" electronic distributors made. The timing curve and initial timing setting was varied for each engine application. The CARBURETOR was a 750cfm Quadrajet.
6 degrees BTDC ( automatic and manual transmissions )
Factory recommended back then would have been 10w/30 or 40.
6, to 8 degrees, advanced. Advance it as far as you can, until the motor pings on acceleration, or, under load.
It looks like the same body but the VIN #'s won't be right
yes
not sure but i do know Pontiac changed the design of the timing covers and water pumps in 1970 for cooling purposes,on the 400.but they didnt come out with the 455 till that year i believe.i know what your talking about because i made the mistake of puting a1970 timing cover on my 68 Bonneville and i have to change it back.if the timing covers are the same you can take the one off the 400 and use that but i don't know if they are the same.Turn the pulley around on the shaft and see if that makes things fit better.You are correct the 455 was introduced in 1970. The 11 bolt water pump was introduced in 1969 to replace the 8 bolt previous pumps. You must change the timing cover and water pump together as the earlier and later styles will not work together. You would need the water pump, timing cover from the 1968 400. -Bonn-evil
As far as timing, the engine calls for 5 BTDC originally,. You might want to run it closer to 12, unless you get any spark knock. 8 degrees is a good setting.
The timing marks on a 1969 Ford 360 should line up between the timing chain and the cam sprocket. This sets the initial timing which can later be adjusted using a timing light.