firing order

Lt1351

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I have a olds 442 455 I changed from points ignition to hei does anyone have the firing order for the hei cap? Rely asap
 

terryf442

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1-8-4-3-5-4-7-2

Drivers side from front to back is 1,3,5,7
Pass side from front to back 2,4,6,8

Hillbilly way of doing this is disconnect the distrib. feed cable...
Disconnect the positive terminal of the battery.....
Pull spark plugs.......

Attach a breaker bar/socket to the Crank bolt on the front of the motor in the center of the Harmonic Balancer.......

Standing at the front of the car facing the engine... turn the bolt clockwise....

Stick your finger over the hole for the #1 spark plug.... and keep turning till you feel pressure on your finger from the piston coming up on the compression stroke... (you'll feel air pushing past your finger trying to escape the engine)

when u feel the pressure... stop turning the crank bolt and insert a drinking straw into the #1 plug hole..... and slowly start turning the engine clockwise again... watch the straw... when it gets to the highest point... from the piston pushing up on it... stop.... this will be very close to TDC (Top Dead Center)... you can confirm this by looking at the timing pointer on the front of the engine... it should be pointing to TDC on the Harmonic balancer.

Now.. the rotor on the distributor will be pointing to the #1 plug wire "Tower" on the distributor cap.... start from there and wire your cap accordingly. (1-8-4-3-6-5-7-2)

Re-gap and install your plugs.... snap the wires onto the plugs..... re-connect your distributor....
Check to be sure your vacuum advance hose is still connected at the distributor and that it is attached to a vacuum port on your carb. located "ABOVE" the throttle plates.

re-connect your battery.....
Start your engine and re-time your engine with a timing light.... you'll more than likely need to turn your distributor a few degrees clockwise..... if you go to far.. you'll hear "Pinging" under acceleration or load when driving and too far will make it hard to start (slow crank) when hot... if this happens.. turn the distributor a bit counter clockwise and try again.... don't turn too far.. it won't take much.
 

PeteDucati

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edit.. Terry had the correct order in the middle of his post.
 
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Joseph Butts

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Timing mark on balancer to go advance goes towards passenger side or driver's side on 455 olds?
 
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