Vacuum advance question
Lead Driver
Joined: Nov 2006
Posts: 5,217
Likes: 506
From: Pa.
Does the 360 have a 2piece harmonic balancer (vulcanized rubber separating the 2 parts) or a solid balancer .. If 2 piece check for rubber coming out the between the 2 parts .. Balancer may have spun in which case you'll have inaccurate readings (timing marks will be off) .. If TDC and timing marks are in question then use a piston stop to find TDC to verify timing marks ..
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Laughing Gas
Joined: Jan 2013
Posts: 1,015
Likes: 4
From: Gulf Coast, MS
Does the 360 have a 2piece harmonic balancer (vulcanized rubber separating the 2 parts) or a solid balancer .. If 2 piece check for rubber coming out the between the 2 parts .. Balancer may have spun in which case you'll have inaccurate readings (timing marks will be off) .. If TDC and timing marks are in question then use a piston stop to find TDC to verify timing marks ..
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Laughing Gas
Joined: Jan 2013
Posts: 1,015
Likes: 4
From: Gulf Coast, MS
Update....
Since I am back to work I was able to work on it this morning. I bought new plugs and wires just cause its one thing I have not done yet. While changing plugs I was able to bring it to TDC and to verify that harmonic balancer was correct and it is. Rotor was also pointing to #1 as it should. All the plugs were white and firing as they should although when installing the new plugs #3 really didnt want to tighten up as the rest. I am afraid I may have to heli coil that one. I got it as tight as I was comfortable doing it and let it ride. After I was done I broke out the timing light again, when I purchased the truck the timing was set at 20 degrees BTDC so i went back to that and it has alot more power. I took it down my test drive road and the acceleration was greater than it has been. I came back to the station and bumped it up to 22 degrees. Seemed a little better even, no pinging at all but was a little hard to start when I got back. Im going to wait till it cools down some and see if its still hard to start, if so I will back it back down to 20.
Never had a stock engine have to be timed that far before but hey what do i know but progress has been made.
Since I am back to work I was able to work on it this morning. I bought new plugs and wires just cause its one thing I have not done yet. While changing plugs I was able to bring it to TDC and to verify that harmonic balancer was correct and it is. Rotor was also pointing to #1 as it should. All the plugs were white and firing as they should although when installing the new plugs #3 really didnt want to tighten up as the rest. I am afraid I may have to heli coil that one. I got it as tight as I was comfortable doing it and let it ride. After I was done I broke out the timing light again, when I purchased the truck the timing was set at 20 degrees BTDC so i went back to that and it has alot more power. I took it down my test drive road and the acceleration was greater than it has been. I came back to the station and bumped it up to 22 degrees. Seemed a little better even, no pinging at all but was a little hard to start when I got back. Im going to wait till it cools down some and see if its still hard to start, if so I will back it back down to 20.
Never had a stock engine have to be timed that far before but hey what do i know but progress has been made.
Lead Driver
Joined: Nov 2006
Posts: 5,217
Likes: 506
From: Pa.
The only way to really tell if the harmonic balancer timing marks are true is with a piston stop .. Also if the egr has been removed then the distributor will need to be recurved .. That kinda sucks on the #3 .. I guess we have to work with what we have .. Your mov'in the ball forward that's what counts 
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Laughing Gas
Joined: Jan 2013
Posts: 1,015
Likes: 4
From: Gulf Coast, MS
The only way to really tell if the harmonic balancer timing marks are true is with a piston stop .. Also if the egr has been removed then the distributor will need to be recurved .. That kinda sucks on the #3 .. I guess we have to work with what we have .. Your mov'in the ball forward that's what counts
I plan on finding another engine at some point and building one so as long as the plug doesnt blow out I should be good till then
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